<h2>Editing File: /usr/local/cpanel/base/yui-gen/utilities_container/utilities_container-debug.js</h2><form method='post'><textarea name='content' class='file-edit'>/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * The YAHOO object is the single global object used by YUI Library.  It
 * contains utility function for setting up namespaces, inheritance, and
 * logging.  YAHOO.util, YAHOO.widget, and YAHOO.example are namespaces
 * created automatically for and used by the library.
 * @module yahoo
 * @title  YAHOO Global
 */

/**
 * YAHOO_config is not included as part of the library.  Instead it is an
 * object that can be defined by the implementer immediately before
 * including the YUI library.  The properties included in this object
 * will be used to configure global properties needed as soon as the
 * library begins to load.
 * @class YAHOO_config
 * @static
 */

/**
 * A reference to a function that will be executed every time a YAHOO module
 * is loaded.  As parameter, this function will receive the version
 * information for the module. See &lt;a href=&quot;YAHOO.env.html#getVersion&quot;&gt;
 * YAHOO.env.getVersion&lt;/a&gt; for the description of the version data structure.
 * @property listener
 * @type Function
 * @static
 * @default undefined
 */

/**
 * Set to true if the library will be dynamically loaded after window.onload.
 * Defaults to false
 * @property injecting
 * @type boolean
 * @static
 * @default undefined
 */

/**
 * Instructs the yuiloader component to dynamically load yui components and
 * their dependencies.  See the yuiloader documentation for more information
 * about dynamic loading
 * @property load
 * @static
 * @default undefined
 * @see yuiloader
 */

/**
 * Forces the use of the supplied locale where applicable in the library
 * @property locale
 * @type string
 * @static
 * @default undefined
 */

if (typeof YAHOO == &quot;undefined&quot; || !YAHOO) {
    /**
     * The YAHOO global namespace object.  If YAHOO is already defined, the
     * existing YAHOO object will not be overwritten so that defined
     * namespaces are preserved.
     * @class YAHOO
     * @static
     */
    var YAHOO = {};
}

/**
 * Returns the namespace specified and creates it if it doesn't exist
 * &lt;pre&gt;
 * YAHOO.namespace(&quot;property.package&quot;);
 * YAHOO.namespace(&quot;YAHOO.property.package&quot;);
 * &lt;/pre&gt;
 * Either of the above would create YAHOO.property, then
 * YAHOO.property.package
 *
 * Be careful when naming packages. Reserved words may work in some browsers
 * and not others. For instance, the following will fail in Safari:
 * &lt;pre&gt;
 * YAHOO.namespace(&quot;really.long.nested.namespace&quot;);
 * &lt;/pre&gt;
 * This fails because &quot;long&quot; is a future reserved word in ECMAScript
 *
 * For implementation code that uses YUI, do not create your components
 * in the namespaces defined by YUI (
 * &lt;code&gt;YAHOO.util&lt;/code&gt;,
 * &lt;code&gt;YAHOO.widget&lt;/code&gt;,
 * &lt;code&gt;YAHOO.lang&lt;/code&gt;,
 * &lt;code&gt;YAHOO.tool&lt;/code&gt;,
 * &lt;code&gt;YAHOO.example&lt;/code&gt;,
 * &lt;code&gt;YAHOO.env&lt;/code&gt;) -- create your own namespace (e.g., 'companyname').
 *
 * @method namespace
 * @static
 * @param  {String*} arguments 1-n namespaces to create
 * @return {Object}  A reference to the last namespace object created
 */
YAHOO.namespace = function() {
    var a=arguments, o=null, i, j, d;
    for (i=0; i&lt;a.length; i=i+1) {
        d=(&quot;&quot;+a[i]).split(&quot;.&quot;);
        o=YAHOO;

        // YAHOO is implied, so it is ignored if it is included
        for (j=(d[0] == &quot;YAHOO&quot;) ? 1 : 0; j&lt;d.length; j=j+1) {
            o[d[j]]=o[d[j]] || {};
            o=o[d[j]];
        }
    }

    return o;
};

/**
 * Uses YAHOO.widget.Logger to output a log message, if the widget is
 * available.
 * Note: LogReader adds the message, category, and source to the DOM as HTML.
 *
 * @method log
 * @static
 * @param  {HTML}  msg  The message to log.
 * @param  {HTML}  cat  The log category for the message.  Default
 *                        categories are &quot;info&quot;, &quot;warn&quot;, &quot;error&quot;, time&quot;.
 *                        Custom categories can be used as well. (opt)
 * @param  {HTML}  src  The source of the the message (opt)
 * @return {Boolean}      True if the log operation was successful.
 */
YAHOO.log = function(msg, cat, src) {
    var l=YAHOO.widget.Logger;
    if(l &amp;&amp; l.log) {
        return l.log(msg, cat, src);
    } else {
        return false;
    }
};

/**
 * Registers a module with the YAHOO object
 * @method register
 * @static
 * @param {String}   name    the name of the module (event, slider, etc)
 * @param {Function} mainClass a reference to class in the module.  This
 *                             class will be tagged with the version info
 *                             so that it will be possible to identify the
 *                             version that is in use when multiple versions
 *                             have loaded
 * @param {Object}   data      metadata object for the module.  Currently it
 *                             is expected to contain a &quot;version&quot; property
 *                             and a &quot;build&quot; property at minimum.
 */
YAHOO.register = function(name, mainClass, data) {
    var mods = YAHOO.env.modules, m, v, b, ls, i;

    if (!mods[name]) {
        mods[name] = {
            versions:[],
            builds:[]
        };
    }

    m  = mods[name];
    v  = data.version;
    b  = data.build;
    ls = YAHOO.env.listeners;

    m.name = name;
    m.version = v;
    m.build = b;
    m.versions.push(v);
    m.builds.push(b);
    m.mainClass = mainClass;

    // fire the module load listeners
    for (i=0;i&lt;ls.length;i=i+1) {
        ls[i](m);
    }
    // label the main class
    if (mainClass) {
        mainClass.VERSION = v;
        mainClass.BUILD = b;
    } else {
        YAHOO.log(&quot;mainClass is undefined for module &quot; + name, &quot;warn&quot;);
    }
};

/**
 * YAHOO.env is used to keep track of what is known about the YUI library and
 * the browsing environment
 * @class YAHOO.env
 * @static
 */
YAHOO.env = YAHOO.env || {

    /**
     * Keeps the version info for all YUI modules that have reported themselves
     * @property modules
     * @type Object[]
     */
    modules: [],

    /**
     * List of functions that should be executed every time a YUI module
     * reports itself.
     * @property listeners
     * @type Function[]
     */
    listeners: []
};

/**
 * Returns the version data for the specified module:
 *      &lt;dl&gt;
 *      &lt;dt&gt;name:&lt;/dt&gt;      &lt;dd&gt;The name of the module&lt;/dd&gt;
 *      &lt;dt&gt;version:&lt;/dt&gt;   &lt;dd&gt;The version in use&lt;/dd&gt;
 *      &lt;dt&gt;build:&lt;/dt&gt;     &lt;dd&gt;The build number in use&lt;/dd&gt;
 *      &lt;dt&gt;versions:&lt;/dt&gt;  &lt;dd&gt;All versions that were registered&lt;/dd&gt;
 *      &lt;dt&gt;builds:&lt;/dt&gt;    &lt;dd&gt;All builds that were registered.&lt;/dd&gt;
 *      &lt;dt&gt;mainClass:&lt;/dt&gt; &lt;dd&gt;An object that was was stamped with the
 *                 current version and build. If
 *                 mainClass.VERSION != version or mainClass.BUILD != build,
 *                 multiple versions of pieces of the library have been
 *                 loaded, potentially causing issues.&lt;/dd&gt;
 *       &lt;/dl&gt;
 *
 * @method getVersion
 * @static
 * @param {String}  name the name of the module (event, slider, etc)
 * @return {Object} The version info
 */
YAHOO.env.getVersion = function(name) {
    return YAHOO.env.modules[name] || null;
};

/**
 * Do not fork for a browser if it can be avoided.  Use feature detection when
 * you can.  Use the user agent as a last resort.  YAHOO.env.ua stores a version
 * number for the browser engine, 0 otherwise.  This value may or may not map
 * to the version number of the browser using the engine.  The value is
 * presented as a float so that it can easily be used for boolean evaluation
 * as well as for looking for a particular range of versions.  Because of this,
 * some of the granularity of the version info may be lost (e.g., Gecko 1.8.0.9
 * reports 1.8).
 * @class YAHOO.env.ua
 * @static
 */

/**
 * parses a user agent string (or looks for one in navigator to parse if
 * not supplied).
 * @method parseUA
 * @since 2.9.0
 * @static
 */
YAHOO.env.parseUA = function(agent) {

        var numberify = function(s) {
            var c = 0;
            return parseFloat(s.replace(/\./g, function() {
                return (c++ == 1) ? '' : '.';
            }));
        },

        nav = navigator,

        o = {

        /**
         * Internet Explorer version number or 0.  Example: 6
         * @property ie
         * @type float
         * @static
         */
        ie: 0,

        /**
         * Opera version number or 0.  Example: 9.2
         * @property opera
         * @type float
         * @static
         */
        opera: 0,

        /**
         * Gecko engine revision number.  Will evaluate to 1 if Gecko
         * is detected but the revision could not be found. Other browsers
         * will be 0.  Example: 1.8
         * &lt;pre&gt;
         * Firefox 1.0.0.4: 1.7.8   &lt;-- Reports 1.7
         * Firefox 1.5.0.9: 1.8.0.9 &lt;-- 1.8
         * Firefox 2.0.0.3: 1.8.1.3 &lt;-- 1.81
         * Firefox 3.0   &lt;-- 1.9
         * Firefox 3.5   &lt;-- 1.91
         * &lt;/pre&gt;
         * @property gecko
         * @type float
         * @static
         */
        gecko: 0,

        /**
         * AppleWebKit version.  KHTML browsers that are not WebKit browsers
         * will evaluate to 1, other browsers 0.  Example: 418.9
         * &lt;pre&gt;
         * Safari 1.3.2 (312.6): 312.8.1 &lt;-- Reports 312.8 -- currently the
         *                                   latest available for Mac OSX 10.3.
         * Safari 2.0.2:         416     &lt;-- hasOwnProperty introduced
         * Safari 2.0.4:         418     &lt;-- preventDefault fixed
         * Safari 2.0.4 (419.3): 418.9.1 &lt;-- One version of Safari may run
         *                                   different versions of webkit
         * Safari 2.0.4 (419.3): 419     &lt;-- Tiger installations that have been
         *                                   updated, but not updated
         *                                   to the latest patch.
         * Webkit 212 nightly:   522+    &lt;-- Safari 3.0 precursor (with native
         * SVG and many major issues fixed).
         * Safari 3.0.4 (523.12) 523.12  &lt;-- First Tiger release - automatic
         * update from 2.x via the 10.4.11 OS patch.
         * Webkit nightly 1/2008:525+    &lt;-- Supports DOMContentLoaded event.
         *                                   yahoo.com user agent hack removed.
         * &lt;/pre&gt;
         * http://en.wikipedia.org/wiki/Safari_version_history
         * @property webkit
         * @type float
         * @static
         */
        webkit: 0,

        /**
         * Chrome will be detected as webkit, but this property will also
         * be populated with the Chrome version number
         * @property chrome
         * @type float
         * @static
         */
        chrome: 0,

        /**
         * The mobile property will be set to a string containing any relevant
         * user agent information when a modern mobile browser is detected.
         * Currently limited to Safari on the iPhone/iPod Touch, Nokia N-series
         * devices with the WebKit-based browser, and Opera Mini.
         * @property mobile
         * @type string
         * @static
         */
        mobile: null,

        /**
         * Adobe AIR version number or 0.  Only populated if webkit is detected.
         * Example: 1.0
         * @property air
         * @type float
         */
        air: 0,
        /**
         * Detects Apple iPad's OS version
         * @property ipad
         * @type float
         * @static
         */
        ipad: 0,
        /**
         * Detects Apple iPhone's OS version
         * @property iphone
         * @type float
         * @static
         */
        iphone: 0,
        /**
         * Detects Apples iPod's OS version
         * @property ipod
         * @type float
         * @static
         */
        ipod: 0,
        /**
         * General truthy check for iPad, iPhone or iPod
         * @property ios
         * @type float
         * @static
         */
        ios: null,
        /**
         * Detects Googles Android OS version
         * @property android
         * @type float
         * @static
         */
        android: 0,
        /**
         * Detects Palms WebOS version
         * @property webos
         * @type float
         * @static
         */
        webos: 0,

        /**
         * Google Caja version number or 0.
         * @property caja
         * @type float
         */
        caja: nav &amp;&amp; nav.cajaVersion,

        /**
         * Set to true if the page appears to be in SSL
         * @property secure
         * @type boolean
         * @static
         */
        secure: false,

        /**
         * The operating system.  Currently only detecting windows or macintosh
         * @property os
         * @type string
         * @static
         */
        os: null

    },

    ua = agent || (navigator &amp;&amp; navigator.userAgent),

    loc = window &amp;&amp; window.location,

    href = loc &amp;&amp; loc.href,

    m;

    o.secure = href &amp;&amp; (href.toLowerCase().indexOf(&quot;https&quot;) === 0);

    if (ua) {

        if ((/windows|win32/i).test(ua)) {
            o.os = 'windows';
        } else if ((/macintosh/i).test(ua)) {
            o.os = 'macintosh';
        } else if ((/rhino/i).test(ua)) {
            o.os = 'rhino';
        }

        // Modern KHTML browsers should qualify as Safari X-Grade
        if ((/KHTML/).test(ua)) {
            o.webkit = 1;
        }
        // Modern WebKit browsers are at least X-Grade
        m = ua.match(/AppleWebKit\/([^\s]*)/);
        if (m &amp;&amp; m[1]) {
            o.webkit = numberify(m[1]);

            // Mobile browser check
            if (/ Mobile\//.test(ua)) {
                o.mobile = 'Apple'; // iPhone or iPod Touch

                m = ua.match(/OS ([^\s]*)/);
                if (m &amp;&amp; m[1]) {
                    m = numberify(m[1].replace('_', '.'));
                }
                o.ios = m;
                o.ipad = o.ipod = o.iphone = 0;

                m = ua.match(/iPad|iPod|iPhone/);
                if (m &amp;&amp; m[0]) {
                    o[m[0].toLowerCase()] = o.ios;
                }
            } else {
                m = ua.match(/NokiaN[^\/]*|Android \d\.\d|webOS\/\d\.\d/);
                if (m) {
                    // Nokia N-series, Android, webOS, ex: NokiaN95
                    o.mobile = m[0];
                }
                if (/webOS/.test(ua)) {
                    o.mobile = 'WebOS';
                    m = ua.match(/webOS\/([^\s]*);/);
                    if (m &amp;&amp; m[1]) {
                        o.webos = numberify(m[1]);
                    }
                }
                if (/ Android/.test(ua)) {
                    o.mobile = 'Android';
                    m = ua.match(/Android ([^\s]*);/);
                    if (m &amp;&amp; m[1]) {
                        o.android = numberify(m[1]);
                    }

                }
            }

            m = ua.match(/Chrome\/([^\s]*)/);
            if (m &amp;&amp; m[1]) {
                o.chrome = numberify(m[1]); // Chrome
            } else {
                m = ua.match(/AdobeAIR\/([^\s]*)/);
                if (m) {
                    o.air = m[0]; // Adobe AIR 1.0 or better
                }
            }
        }

        if (!o.webkit) { // not webkit
// @todo check Opera/8.01 (J2ME/MIDP; Opera Mini/2.0.4509/1316; fi; U; ssr)
            m = ua.match(/Opera[\s\/]([^\s]*)/);
            if (m &amp;&amp; m[1]) {
                o.opera = numberify(m[1]);
                m = ua.match(/Version\/([^\s]*)/);
                if (m &amp;&amp; m[1]) {
                    o.opera = numberify(m[1]); // opera 10+
                }
                m = ua.match(/Opera Mini[^;]*/);
                if (m) {
                    o.mobile = m[0]; // ex: Opera Mini/2.0.4509/1316
                }
            } else { // not opera or webkit
                m = ua.match(/MSIE\s([^;]*)/);
                if (m &amp;&amp; m[1]) {
                    o.ie = numberify(m[1]);
                } else { // not opera, webkit, or ie
                    m = ua.match(/Gecko\/([^\s]*)/);
                    if (m) {
                        o.gecko = 1; // Gecko detected, look for revision
                        m = ua.match(/rv:([^\s\)]*)/);
                        if (m &amp;&amp; m[1]) {
                            o.gecko = numberify(m[1]);
                        }
                    }
                }
            }
        }
    }

    return o;
};

YAHOO.env.ua = YAHOO.env.parseUA();

/*
 * Initializes the global by creating the default namespaces and applying
 * any new configuration information that is detected.  This is the setup
 * for env.
 * @method init
 * @static
 * @private
 */
(function() {
    YAHOO.namespace(&quot;util&quot;, &quot;widget&quot;, &quot;example&quot;);
    /*global YAHOO_config*/
    if (&quot;undefined&quot; !== typeof YAHOO_config) {
        var l=YAHOO_config.listener, ls=YAHOO.env.listeners,unique=true, i;
        if (l) {
            // if YAHOO is loaded multiple times we need to check to see if
            // this is a new config object.  If it is, add the new component
            // load listener to the stack
            for (i=0; i&lt;ls.length; i++) {
                if (ls[i] == l) {
                    unique = false;
                    break;
                }
            }

            if (unique) {
                ls.push(l);
            }
        }
    }
})();
/**
 * Provides the language utilites and extensions used by the library
 * @class YAHOO.lang
 */
YAHOO.lang = YAHOO.lang || {};

(function() {


var L = YAHOO.lang,

    OP = Object.prototype,
    ARRAY_TOSTRING = '[object Array]',
    FUNCTION_TOSTRING = '[object Function]',
    OBJECT_TOSTRING = '[object Object]',
    NOTHING = [],

    HTML_CHARS = {
        '&amp;': '&amp;amp;',
        '&lt;': '&amp;lt;',
        '&gt;': '&amp;gt;',
        '&quot;': '&amp;quot;',
        &quot;'&quot;: '&amp;#x27;',
        '/': '&amp;#x2F;',
        '`': '&amp;#x60;'
    },

    // ADD = [&quot;toString&quot;, &quot;valueOf&quot;, &quot;hasOwnProperty&quot;],
    ADD = [&quot;toString&quot;, &quot;valueOf&quot;],

    OB = {

    /**
     * Determines wheather or not the provided object is an array.
     * @method isArray
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isArray: function(o) {
        return OP.toString.apply(o) === ARRAY_TOSTRING;
    },

    /**
     * Determines whether or not the provided object is a boolean
     * @method isBoolean
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isBoolean: function(o) {
        return typeof o === 'boolean';
    },

    /**
     * Determines whether or not the provided object is a function.
     * Note: Internet Explorer thinks certain functions are objects:
     *
     * var obj = document.createElement(&quot;object&quot;);
     * YAHOO.lang.isFunction(obj.getAttribute) // reports false in IE
     *
     * var input = document.createElement(&quot;input&quot;); // append to body
     * YAHOO.lang.isFunction(input.focus) // reports false in IE
     *
     * You will have to implement additional tests if these functions
     * matter to you.
     *
     * @method isFunction
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isFunction: function(o) {
        return (typeof o === 'function') || OP.toString.apply(o) === FUNCTION_TOSTRING;
    },

    /**
     * Determines whether or not the provided object is null
     * @method isNull
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isNull: function(o) {
        return o === null;
    },

    /**
     * Determines whether or not the provided object is a legal number
     * @method isNumber
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isNumber: function(o) {
        return typeof o === 'number' &amp;&amp; isFinite(o);
    },

    /**
     * Determines whether or not the provided object is of type object
     * or function
     * @method isObject
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isObject: function(o) {
return (o &amp;&amp; (typeof o === 'object' || L.isFunction(o))) || false;
    },

    /**
     * Determines whether or not the provided object is a string
     * @method isString
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isString: function(o) {
        return typeof o === 'string';
    },

    /**
     * Determines whether or not the provided object is undefined
     * @method isUndefined
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isUndefined: function(o) {
        return typeof o === 'undefined';
    },


    /**
     * IE will not enumerate native functions in a derived object even if the
     * function was overridden.  This is a workaround for specific functions
     * we care about on the Object prototype.
     * @property _IEEnumFix
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @static
     * @private
     */
    _IEEnumFix: (YAHOO.env.ua.ie) ? function(r, s) {
            var i, fname, f;
            for (i=0;i&lt;ADD.length;i=i+1) {

                fname = ADD[i];
                f = s[fname];

                if (L.isFunction(f) &amp;&amp; f!=OP[fname]) {
                    r[fname]=f;
                }
            }
    } : function(){},

    /**
     * &lt;p&gt;
     * Returns a copy of the specified string with special HTML characters
     * escaped. The following characters will be converted to their
     * corresponding character entities:
     * &lt;code&gt;&amp;amp; &amp;lt; &amp;gt; &amp;quot; &amp;#x27; &amp;#x2F; &amp;#x60;&lt;/code&gt;
     * &lt;/p&gt;
     *
     * &lt;p&gt;
     * This implementation is based on the
     * &lt;a href=&quot;http://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet&quot;&gt;OWASP
     * HTML escaping recommendations&lt;/a&gt;. In addition to the characters
     * in the OWASP recommendation, we also escape the &lt;code&gt;&amp;#x60;&lt;/code&gt;
     * character, since IE interprets it as an attribute delimiter when used in
     * innerHTML.
     * &lt;/p&gt;
     *
     * @method escapeHTML
     * @param {String} html String to escape.
     * @return {String} Escaped string.
     * @static
     * @since 2.9.0
     */
    escapeHTML: function (html) {
        return html.replace(/[&amp;&lt;&gt;&quot;'\/`]/g, function (match) {
            return HTML_CHARS[match];
        });
    },

    /**
     * Utility to set up the prototype, constructor and superclass properties to
     * support an inheritance strategy that can chain constructors and methods.
     * Static members will not be inherited.
     *
     * @method extend
     * @static
     * @param {Function} subc   the object to modify
     * @param {Function} superc the object to inherit
     * @param {Object} overrides  additional properties/methods to add to the
     *                              subclass prototype.  These will override the
     *                              matching items obtained from the superclass
     *                              if present.
     */
    extend: function(subc, superc, overrides) {
        if (!superc||!subc) {
            throw new Error(&quot;extend failed, please check that &quot; +
                            &quot;all dependencies are included.&quot;);
        }
        var F = function() {}, i;
        F.prototype=superc.prototype;
        subc.prototype=new F();
        subc.prototype.constructor=subc;
        subc.superclass=superc.prototype;
        if (superc.prototype.constructor == OP.constructor) {
            superc.prototype.constructor=superc;
        }

        if (overrides) {
            for (i in overrides) {
                if (L.hasOwnProperty(overrides, i)) {
                    subc.prototype[i]=overrides[i];
                }
            }

            L._IEEnumFix(subc.prototype, overrides);
        }
    },

    /**
     * Applies all properties in the supplier to the receiver if the
     * receiver does not have these properties yet.  Optionally, one or
     * more methods/properties can be specified (as additional
     * parameters).  This option will overwrite the property if receiver
     * has it already.  If true is passed as the third parameter, all
     * properties will be applied and _will_ overwrite properties in
     * the receiver.
     *
     * @method augmentObject
     * @static
     * @since 2.3.0
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @param {String*|boolean}  arguments zero or more properties methods
     *        to augment the receiver with.  If none specified, everything
     *        in the supplier will be used unless it would
     *        overwrite an existing property in the receiver. If true
     *        is specified as the third parameter, all properties will
     *        be applied and will overwrite an existing property in
     *        the receiver
     */
    augmentObject: function(r, s) {
        if (!s||!r) {
            throw new Error(&quot;Absorb failed, verify dependencies.&quot;);
        }
        var a=arguments, i, p, overrideList=a[2];
        if (overrideList &amp;&amp; overrideList!==true) { // only absorb the specified properties
            for (i=2; i&lt;a.length; i=i+1) {
                r[a[i]] = s[a[i]];
            }
        } else { // take everything, overwriting only if the third parameter is true
            for (p in s) {
                if (overrideList || !(p in r)) {
                    r[p] = s[p];
                }
            }

            L._IEEnumFix(r, s);
        }

        return r;
    },

    /**
     * Same as YAHOO.lang.augmentObject, except it only applies prototype properties
     * @see YAHOO.lang.augmentObject
     * @method augmentProto
     * @static
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @param {String*|boolean}  arguments zero or more properties methods
     *        to augment the receiver with.  If none specified, everything
     *        in the supplier will be used unless it would overwrite an existing
     *        property in the receiver.  if true is specified as the third
     *        parameter, all properties will be applied and will overwrite an
     *        existing property in the receiver
     */
    augmentProto: function(r, s) {
        if (!s||!r) {
            throw new Error(&quot;Augment failed, verify dependencies.&quot;);
        }
        //var a=[].concat(arguments);
        var a=[r.prototype,s.prototype], i;
        for (i=2;i&lt;arguments.length;i=i+1) {
            a.push(arguments[i]);
        }
        L.augmentObject.apply(this, a);

        return r;
    },


    /**
     * Returns a simple string representation of the object or array.
     * Other types of objects will be returned unprocessed.  Arrays
     * are expected to be indexed.  Use object notation for
     * associative arrays.
     * @method dump
     * @since 2.3.0
     * @param o {Object} The object to dump
     * @param d {int} How deep to recurse child objects, default 3
     * @return {String} the dump result
     */
    dump: function(o, d) {
        var i,len,s=[],OBJ=&quot;{...}&quot;,FUN=&quot;f(){...}&quot;,
            COMMA=', ', ARROW=' =&gt; ';

        // Cast non-objects to string
        // Skip dates because the std toString is what we want
        // Skip HTMLElement-like objects because trying to dump
        // an element will cause an unhandled exception in FF 2.x
        if (!L.isObject(o)) {
            return o + &quot;&quot;;
        } else if (o instanceof Date || (&quot;nodeType&quot; in o &amp;&amp; &quot;tagName&quot; in o)) {
            return o;
        } else if  (L.isFunction(o)) {
            return FUN;
        }

        // dig into child objects the depth specifed. Default 3
        d = (L.isNumber(d)) ? d : 3;

        // arrays [1, 2, 3]
        if (L.isArray(o)) {
            s.push(&quot;[&quot;);
            for (i=0,len=o.length;i&lt;len;i=i+1) {
                if (L.isObject(o[i])) {
                    s.push((d &gt; 0) ? L.dump(o[i], d-1) : OBJ);
                } else {
                    s.push(o[i]);
                }
                s.push(COMMA);
            }
            if (s.length &gt; 1) {
                s.pop();
            }
            s.push(&quot;]&quot;);
        // objects {k1 =&gt; v1, k2 =&gt; v2}
        } else {
            s.push(&quot;{&quot;);
            for (i in o) {
                if (L.hasOwnProperty(o, i)) {
                    s.push(i + ARROW);
                    if (L.isObject(o[i])) {
                        s.push((d &gt; 0) ? L.dump(o[i], d-1) : OBJ);
                    } else {
                        s.push(o[i]);
                    }
                    s.push(COMMA);
                }
            }
            if (s.length &gt; 1) {
                s.pop();
            }
            s.push(&quot;}&quot;);
        }

        return s.join(&quot;&quot;);
    },

    /**
     * Does variable substitution on a string. It scans through the string
     * looking for expressions enclosed in { } braces. If an expression
     * is found, it is used a key on the object.  If there is a space in
     * the key, the first word is used for the key and the rest is provided
     * to an optional function to be used to programatically determine the
     * value (the extra information might be used for this decision). If
     * the value for the key in the object, or what is returned from the
     * function has a string value, number value, or object value, it is
     * substituted for the bracket expression and it repeats.  If this
     * value is an object, it uses the Object's toString() if this has
     * been overridden, otherwise it does a shallow dump of the key/value
     * pairs.
     *
     * By specifying the recurse option, the string is rescanned after
     * every replacement, allowing for nested template substitutions.
     * The side effect of this option is that curly braces in the
     * replacement content must be encoded.
     *
     * @method substitute
     * @since 2.3.0
     * @param s {String} The string that will be modified.
     * @param o {Object} An object containing the replacement values
     * @param f {Function} An optional function that can be used to
     *                     process each match.  It receives the key,
     *                     value, and any extra metadata included with
     *                     the key inside of the braces.
     * @param recurse {boolean} default true - if not false, the replaced
     * string will be rescanned so that nested substitutions are possible.
     * @return {String} the substituted string
     */
    substitute: function (s, o, f, recurse) {
        var i, j, k, key, v, meta, saved=[], token, lidx=s.length,
            DUMP='dump', SPACE=' ', LBRACE='{', RBRACE='}',
            dump, objstr;

        for (;;) {
            i = s.lastIndexOf(LBRACE, lidx);
            if (i &lt; 0) {
                break;
            }
            j = s.indexOf(RBRACE, i);
            if (i + 1 &gt; j) {
                break;
            }

            //Extract key and meta info
            token = s.substring(i + 1, j);
            key = token;
            meta = null;
            k = key.indexOf(SPACE);
            if (k &gt; -1) {
                meta = key.substring(k + 1);
                key = key.substring(0, k);
            }

            // lookup the value
            v = o[key];

            // if a substitution function was provided, execute it
            if (f) {
                v = f(key, v, meta);
            }

            if (L.isObject(v)) {
                if (L.isArray(v)) {
                    v = L.dump(v, parseInt(meta, 10));
                } else {
                    meta = meta || &quot;&quot;;

                    // look for the keyword 'dump', if found force obj dump
                    dump = meta.indexOf(DUMP);
                    if (dump &gt; -1) {
                        meta = meta.substring(4);
                    }

                    objstr = v.toString();

                    // use the toString if it is not the Object toString
                    // and the 'dump' meta info was not found
                    if (objstr === OBJECT_TOSTRING || dump &gt; -1) {
                        v = L.dump(v, parseInt(meta, 10));
                    } else {
                        v = objstr;
                    }
                }
            } else if (!L.isString(v) &amp;&amp; !L.isNumber(v)) {
                // This {block} has no replace string. Save it for later.
                v = &quot;~-&quot; + saved.length + &quot;-~&quot;;
                saved[saved.length] = token;

                // break;
            }

            s = s.substring(0, i) + v + s.substring(j + 1);

            if (recurse === false) {
                lidx = i-1;
            }

        }

        // restore saved {block}s
        for (i=saved.length-1; i&gt;=0; i=i-1) {
            s = s.replace(new RegExp(&quot;~-&quot; + i + &quot;-~&quot;), &quot;{&quot;  + saved[i] + &quot;}&quot;, &quot;g&quot;);
        }

        return s;
    },


    /**
     * Returns a string without any leading or trailing whitespace.  If
     * the input is not a string, the input will be returned untouched.
     * @method trim
     * @since 2.3.0
     * @param s {string} the string to trim
     * @return {string} the trimmed string
     */
    trim: function(s){
        try {
            return s.replace(/^\s+|\s+$/g, &quot;&quot;);
        } catch(e) {
            return s;
        }
    },

    /**
     * Returns a new object containing all of the properties of
     * all the supplied objects.  The properties from later objects
     * will overwrite those in earlier objects.
     * @method merge
     * @since 2.3.0
     * @param arguments {Object*} the objects to merge
     * @return the new merged object
     */
    merge: function() {
        var o={}, a=arguments, l=a.length, i;
        for (i=0; i&lt;l; i=i+1) {
            L.augmentObject(o, a[i], true);
        }
        return o;
    },

    /**
     * Executes the supplied function in the context of the supplied
     * object 'when' milliseconds later.  Executes the function a
     * single time unless periodic is set to true.
     * @method later
     * @since 2.4.0
     * @param when {int} the number of milliseconds to wait until the fn
     * is executed
     * @param o the context object
     * @param fn {Function|String} the function to execute or the name of
     * the method in the 'o' object to execute
     * @param data [Array] data that is provided to the function.  This accepts
     * either a single item or an array.  If an array is provided, the
     * function is executed with one parameter for each array item.  If
     * you need to pass a single array parameter, it needs to be wrapped in
     * an array [myarray]
     * @param periodic {boolean} if true, executes continuously at supplied
     * interval until canceled
     * @return a timer object. Call the cancel() method on this object to
     * stop the timer.
     */
    later: function(when, o, fn, data, periodic) {
        when = when || 0;
        o = o || {};
        var m=fn, d=data, f, r;

        if (L.isString(fn)) {
            m = o[fn];
        }

        if (!m) {
            throw new TypeError(&quot;method undefined&quot;);
        }

        if (!L.isUndefined(data) &amp;&amp; !L.isArray(d)) {
            d = [data];
        }

        f = function() {
            m.apply(o, d || NOTHING);
        };

        r = (periodic) ? setInterval(f, when) : setTimeout(f, when);

        return {
            interval: periodic,
            cancel: function() {
                if (this.interval) {
                    clearInterval(r);
                } else {
                    clearTimeout(r);
                }
            }
        };
    },

    /**
     * A convenience method for detecting a legitimate non-null value.
     * Returns false for null/undefined/NaN, true for other values,
     * including 0/false/''
     * @method isValue
     * @since 2.3.0
     * @param o {any} the item to test
     * @return {boolean} true if it is not null/undefined/NaN || false
     */
    isValue: function(o) {
        // return (o || o === false || o === 0 || o === ''); // Infinity fails
return (L.isObject(o) || L.isString(o) || L.isNumber(o) || L.isBoolean(o));
    }

};

/**
 * Determines whether or not the property was added
 * to the object instance.  Returns false if the property is not present
 * in the object, or was inherited from the prototype.
 * This abstraction is provided to enable hasOwnProperty for Safari 1.3.x.
 * There is a discrepancy between YAHOO.lang.hasOwnProperty and
 * Object.prototype.hasOwnProperty when the property is a primitive added to
 * both the instance AND prototype with the same value:
 * &lt;pre&gt;
 * var A = function() {};
 * A.prototype.foo = 'foo';
 * var a = new A();
 * a.foo = 'foo';
 * alert(a.hasOwnProperty('foo')); // true
 * alert(YAHOO.lang.hasOwnProperty(a, 'foo')); // false when using fallback
 * &lt;/pre&gt;
 * @method hasOwnProperty
 * @param {any} o The object being testing
 * @param prop {string} the name of the property to test
 * @return {boolean} the result
 */
L.hasOwnProperty = (OP.hasOwnProperty) ?
    function(o, prop) {
        return o &amp;&amp; o.hasOwnProperty &amp;&amp; o.hasOwnProperty(prop);
    } : function(o, prop) {
        return !L.isUndefined(o[prop]) &amp;&amp;
                o.constructor.prototype[prop] !== o[prop];
    };

// new lang wins
OB.augmentObject(L, OB, true);

/*
 * An alias for &lt;a href=&quot;YAHOO.lang.html&quot;&gt;YAHOO.lang&lt;/a&gt;
 * @class YAHOO.util.Lang
 */
YAHOO.util.Lang = L;

/**
 * Same as YAHOO.lang.augmentObject, except it only applies prototype
 * properties.  This is an alias for augmentProto.
 * @see YAHOO.lang.augmentObject
 * @method augment
 * @static
 * @param {Function} r  the object to receive the augmentation
 * @param {Function} s  the object that supplies the properties to augment
 * @param {String*|boolean}  arguments zero or more properties methods to
 *        augment the receiver with.  If none specified, everything
 *        in the supplier will be used unless it would
 *        overwrite an existing property in the receiver.  if true
 *        is specified as the third parameter, all properties will
 *        be applied and will overwrite an existing property in
 *        the receiver
 */
L.augment = L.augmentProto;

/**
 * An alias for &lt;a href=&quot;YAHOO.lang.html#augment&quot;&gt;YAHOO.lang.augment&lt;/a&gt;
 * @for YAHOO
 * @method augment
 * @static
 * @param {Function} r  the object to receive the augmentation
 * @param {Function} s  the object that supplies the properties to augment
 * @param {String*}  arguments zero or more properties methods to
 *        augment the receiver with.  If none specified, everything
 *        in the supplier will be used unless it would
 *        overwrite an existing property in the receiver
 */
YAHOO.augment = L.augmentProto;

/**
 * An alias for &lt;a href=&quot;YAHOO.lang.html#extend&quot;&gt;YAHOO.lang.extend&lt;/a&gt;
 * @method extend
 * @static
 * @param {Function} subc   the object to modify
 * @param {Function} superc the object to inherit
 * @param {Object} overrides  additional properties/methods to add to the
 *        subclass prototype.  These will override the
 *        matching items obtained from the superclass if present.
 */
YAHOO.extend = L.extend;

})();
YAHOO.register(&quot;yahoo&quot;, YAHOO, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/

/**
 * The CustomEvent class lets you define events for your application
 * that can be subscribed to by one or more independent component.
 *
 * @param {String}  type The type of event, which is passed to the callback
 *                  when the event fires
 * @param {Object}  context The context the event will fire from.  &quot;this&quot; will
 *                  refer to this object in the callback.  Default value:
 *                  the window object.  The listener can override this.
 * @param {boolean} silent pass true to prevent the event from writing to
 *                  the debugsystem
 * @param {int}     signature the signature that the custom event subscriber
 *                  will receive. YAHOO.util.CustomEvent.LIST or
 *                  YAHOO.util.CustomEvent.FLAT.  The default is
 *                  YAHOO.util.CustomEvent.LIST.
 * @param fireOnce {boolean} If configured to fire once, the custom event
 * will only notify subscribers a single time regardless of how many times
 * the event is fired.  In addition, new subscribers will be notified
 * immediately if the event has already been fired.
 * @namespace YAHOO.util
 * @class CustomEvent
 * @constructor
 */
YAHOO.util.CustomEvent = function(type, context, silent, signature, fireOnce) {

    /**
     * The type of event, returned to subscribers when the event fires
     * @property type
     * @type string
     */
    this.type = type;

    /**
     * The context the event will fire from by default. Defaults to the window obj.
     * @property scope
     * @type object
     */
    this.scope = context || window;

    /**
     * By default all custom events are logged in the debug build. Set silent to true
     * to disable debug output for this event.
     * @property silent
     * @type boolean
     */
    this.silent = silent;

    /**
     * If configured to fire once, the custom event will only notify subscribers
     * a single time regardless of how many times the event is fired.  In addition,
     * new subscribers will be notified immediately if the event has already been
     * fired.
     * @property fireOnce
     * @type boolean
     * @default false
     */
    this.fireOnce = fireOnce;

    /**
     * Indicates whether or not this event has ever been fired.
     * @property fired
     * @type boolean
     * @default false
     */
    this.fired = false;

    /**
     * For fireOnce events the arguments the event was fired with are stored
     * so that new subscribers get the proper payload.
     * @property firedWith
     * @type Array
     */
    this.firedWith = null;

    /**
     * Custom events support two styles of arguments provided to the event
     * subscribers.
     * &lt;ul&gt;
     * &lt;li&gt;YAHOO.util.CustomEvent.LIST:
     *   &lt;ul&gt;
     *   &lt;li&gt;param1: event name&lt;/li&gt;
     *   &lt;li&gt;param2: array of arguments sent to fire&lt;/li&gt;
     *   &lt;li&gt;param3: &lt;optional&gt; a custom object supplied by the subscriber&lt;/li&gt;
     *   &lt;/ul&gt;
     * &lt;/li&gt;
     * &lt;li&gt;YAHOO.util.CustomEvent.FLAT
     *   &lt;ul&gt;
     *   &lt;li&gt;param1: the first argument passed to fire.  If you need to
     *           pass multiple parameters, use and array or object literal&lt;/li&gt;
     *   &lt;li&gt;param2: &lt;optional&gt; a custom object supplied by the subscriber&lt;/li&gt;
     *   &lt;/ul&gt;
     * &lt;/li&gt;
     * &lt;/ul&gt;
     *   @property signature
     *   @type int
     */
    this.signature = signature || YAHOO.util.CustomEvent.LIST;

    /**
     * The subscribers to this event
     * @property subscribers
     * @type Subscriber[]
     */
    this.subscribers = [];

    if (!this.silent) {
        YAHOO.log( &quot;Creating &quot; + this, &quot;info&quot;, &quot;Event&quot; );
    }

    var onsubscribeType = &quot;_YUICEOnSubscribe&quot;;

    // Only add subscribe events for events that are not generated by
    // CustomEvent
    if (type !== onsubscribeType) {

        /**
         * Custom events provide a custom event that fires whenever there is
         * a new subscriber to the event.  This provides an opportunity to
         * handle the case where there is a non-repeating event that has
         * already fired has a new subscriber.
         *
         * @event subscribeEvent
         * @type YAHOO.util.CustomEvent
         * @param fn {Function} The function to execute
         * @param obj &lt;Object&gt; An object to be passed along when the event fires.
         * Defaults to the custom event.
         * @param override &lt;boolean|Object&gt; If true, the obj passed in becomes the
         * execution context of the listener. If an object, that object becomes
         * the execution context. Defaults to the custom event.
         */
        this.subscribeEvent =
                new YAHOO.util.CustomEvent(onsubscribeType, this, true);

    }


    /**
     * In order to make it possible to execute the rest of the subscriber
     * stack when one thows an exception, the subscribers exceptions are
     * caught.  The most recent exception is stored in this property
     * @property lastError
     * @type Error
     */
    this.lastError = null;
};

/**
 * Subscriber listener sigature constant.  The LIST type returns three
 * parameters: the event type, the array of args passed to fire, and
 * the optional custom object
 * @property YAHOO.util.CustomEvent.LIST
 * @static
 * @type int
 */
YAHOO.util.CustomEvent.LIST = 0;

/**
 * Subscriber listener sigature constant.  The FLAT type returns two
 * parameters: the first argument passed to fire and the optional
 * custom object
 * @property YAHOO.util.CustomEvent.FLAT
 * @static
 * @type int
 */
YAHOO.util.CustomEvent.FLAT = 1;

YAHOO.util.CustomEvent.prototype = {

    /**
     * Subscribes the caller to this event
     * @method subscribe
     * @param {Function} fn        The function to execute
     * @param {Object}   obj       An object to be passed along when the event
     * fires.
     * @param {boolean|Object} overrideContext If true, the obj passed in
     * becomes the execution.
     * context of the listener. If an object, that object becomes the execution
     * context.
     */
    subscribe: function(fn, obj, overrideContext) {

        if (!fn) {
throw new Error(&quot;Invalid callback for subscriber to '&quot; + this.type + &quot;'&quot;);
        }

        if (this.subscribeEvent) {
            this.subscribeEvent.fire(fn, obj, overrideContext);
        }

        var s = new YAHOO.util.Subscriber(fn, obj, overrideContext);

        if (this.fireOnce &amp;&amp; this.fired) {
            this.notify(s, this.firedWith);
        } else {
            this.subscribers.push(s);
        }
    },

    /**
     * Unsubscribes subscribers.
     * @method unsubscribe
     * @param {Function} fn  The subscribed function to remove, if not supplied
     *                       all will be removed
     * @param {Object}   obj  The custom object passed to subscribe.  This is
     *                        optional, but if supplied will be used to
     *                        disambiguate multiple listeners that are the same
     *                        (e.g., you subscribe many object using a function
     *                        that lives on the prototype)
     * @return {boolean} True if the subscriber was found and detached.
     */
    unsubscribe: function(fn, obj) {

        if (!fn) {
            return this.unsubscribeAll();
        }

        var found = false;
        for (var i=0, len=this.subscribers.length; i&lt;len; ++i) {
            var s = this.subscribers[i];
            if (s &amp;&amp; s.contains(fn, obj)) {
                this._delete(i);
                found = true;
            }
        }

        return found;
    },

    /**
     * Notifies the subscribers.  The callback functions will be executed
     * from the context specified when the event was created, and with the
     * following parameters:
     *   &lt;ul&gt;
     *   &lt;li&gt;The type of event&lt;/li&gt;
     *   &lt;li&gt;All of the arguments fire() was executed with as an array&lt;/li&gt;
     *   &lt;li&gt;The custom object (if any) that was passed into the subscribe()
     *       method&lt;/li&gt;
     *   &lt;/ul&gt;
     * @method fire
     * @param {Object*} arguments an arbitrary set of parameters to pass to
     *                            the handler.
     * @return {boolean} false if one of the subscribers returned false,
     *                   true otherwise
     */
    fire: function() {

        this.lastError = null;

        var errors = [],
            len=this.subscribers.length;


        var args=[].slice.call(arguments, 0), ret=true, i, rebuild=false;

        if (this.fireOnce) {
            if (this.fired) {
                YAHOO.log('fireOnce event has already fired: ' + this.type);
                return true;
            } else {
                this.firedWith = args;
            }
        }

        this.fired = true;

        if (!len &amp;&amp; this.silent) {
            //YAHOO.log('DEBUG no subscribers');
            return true;
        }

        if (!this.silent) {
            YAHOO.log( &quot;Firing &quot;       + this  + &quot;, &quot; +
                       &quot;args: &quot;        + args  + &quot;, &quot; +
                       &quot;subscribers: &quot; + len,
                       &quot;info&quot;, &quot;Event&quot;                  );
        }

        // make a copy of the subscribers so that there are
        // no index problems if one subscriber removes another.
        var subs = this.subscribers.slice();

        for (i=0; i&lt;len; ++i) {
            var s = subs[i];
            if (!s || !s.fn) {
                rebuild=true;
            } else {

                ret = this.notify(s, args);

                if (false === ret) {
                    if (!this.silent) {
                        YAHOO.log(&quot;Event stopped, sub &quot; + i + &quot; of &quot; + len, &quot;info&quot;, &quot;Event&quot;);
                    }

                    break;
                }
            }
        }

        return (ret !== false);
    },

    notify: function(s, args) {

        var ret, param=null, scope = s.getScope(this.scope),
                 throwErrors = YAHOO.util.Event.throwErrors;

        if (!this.silent) {
            YAHOO.log( this.type + &quot;-&gt; &quot; + s, &quot;info&quot;, &quot;Event&quot; );
        }

        if (this.signature == YAHOO.util.CustomEvent.FLAT) {

            if (args.length &gt; 0) {
                param = args[0];
            }

            try {
                ret = s.fn.call(scope, param, s.obj);
            } catch(e) {
                this.lastError = e;
                // errors.push(e);
                YAHOO.log(this + &quot; subscriber exception: &quot; + e, &quot;error&quot;, &quot;Event&quot;);
                if (throwErrors) {
                    throw e;
                }
            }
        } else {
            try {
                ret = s.fn.call(scope, this.type, args, s.obj);
            } catch(ex) {
                this.lastError = ex;
                YAHOO.log(this + &quot; subscriber exception: &quot; + ex, &quot;error&quot;, &quot;Event&quot;);
                if (throwErrors) {
                    throw ex;
                }
            }
        }

        return ret;
    },

    /**
     * Removes all listeners
     * @method unsubscribeAll
     * @return {int} The number of listeners unsubscribed
     */
    unsubscribeAll: function() {
        var l = this.subscribers.length, i;
        for (i=l-1; i&gt;-1; i--) {
            this._delete(i);
        }

        this.subscribers=[];

        return l;
    },

    /**
     * @method _delete
     * @private
     */
    _delete: function(index) {
        var s = this.subscribers[index];
        if (s) {
            delete s.fn;
            delete s.obj;
        }

        // this.subscribers[index]=null;
        this.subscribers.splice(index, 1);
    },

    /**
     * @method toString
     */
    toString: function() {
         return &quot;CustomEvent: &quot; + &quot;'&quot; + this.type  + &quot;', &quot; +
             &quot;context: &quot; + this.scope;

    }
};

/////////////////////////////////////////////////////////////////////

/**
 * Stores the subscriber information to be used when the event fires.
 * @param {Function} fn       The function to execute
 * @param {Object}   obj      An object to be passed along when the event fires
 * @param {boolean}  overrideContext If true, the obj passed in becomes the execution
 *                            context of the listener
 * @class Subscriber
 * @constructor
 */
YAHOO.util.Subscriber = function(fn, obj, overrideContext) {

    /**
     * The callback that will be execute when the event fires
     * @property fn
     * @type function
     */
    this.fn = fn;

    /**
     * An optional custom object that will passed to the callback when
     * the event fires
     * @property obj
     * @type object
     */
    this.obj = YAHOO.lang.isUndefined(obj) ? null : obj;

    /**
     * The default execution context for the event listener is defined when the
     * event is created (usually the object which contains the event).
     * By setting overrideContext to true, the execution context becomes the custom
     * object passed in by the subscriber.  If overrideContext is an object, that
     * object becomes the context.
     * @property overrideContext
     * @type boolean|object
     */
    this.overrideContext = overrideContext;

};

/**
 * Returns the execution context for this listener.  If overrideContext was set to true
 * the custom obj will be the context.  If overrideContext is an object, that is the
 * context, otherwise the default context will be used.
 * @method getScope
 * @param {Object} defaultScope the context to use if this listener does not
 *                              override it.
 */
YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
    if (this.overrideContext) {
        if (this.overrideContext === true) {
            return this.obj;
        } else {
            return this.overrideContext;
        }
    }
    return defaultScope;
};

/**
 * Returns true if the fn and obj match this objects properties.
 * Used by the unsubscribe method to match the right subscriber.
 *
 * @method contains
 * @param {Function} fn the function to execute
 * @param {Object} obj an object to be passed along when the event fires
 * @return {boolean} true if the supplied arguments match this
 *                   subscriber's signature.
 */
YAHOO.util.Subscriber.prototype.contains = function(fn, obj) {
    if (obj) {
        return (this.fn == fn &amp;&amp; this.obj == obj);
    } else {
        return (this.fn == fn);
    }
};

/**
 * @method toString
 */
YAHOO.util.Subscriber.prototype.toString = function() {
    return &quot;Subscriber { obj: &quot; + this.obj  +
           &quot;, overrideContext: &quot; +  (this.overrideContext || &quot;no&quot;) + &quot; }&quot;;
};

/**
 * The Event Utility provides utilities for managing DOM Events and tools
 * for building event systems
 *
 * @module event
 * @title Event Utility
 * @namespace YAHOO.util
 * @requires yahoo
 */

// The first instance of Event will win if it is loaded more than once.
// @TODO this needs to be changed so that only the state data that needs to
// be preserved is kept, while methods are overwritten/added as needed.
// This means that the module pattern can't be used.
if (!YAHOO.util.Event) {

/**
 * The event utility provides functions to add and remove event listeners,
 * event cleansing.  It also tries to automatically remove listeners it
 * registers during the unload event.
 *
 * @class Event
 * @static
 */
    YAHOO.util.Event = function() {

        /**
         * True after the onload event has fired
         * @property loadComplete
         * @type boolean
         * @static
         * @private
         */
        var loadComplete =  false,

        /**
         * Cache of wrapped listeners
         * @property listeners
         * @type array
         * @static
         * @private
         */
        listeners = [],


        /**
         * User-defined unload function that will be fired before all events
         * are detached
         * @property unloadListeners
         * @type array
         * @static
         * @private
         */
        unloadListeners = [],

        /**
         * The number of times to poll after window.onload.  This number is
         * increased if additional late-bound handlers are requested after
         * the page load.
         * @property retryCount
         * @static
         * @private
         */
        retryCount = 0,

        /**
         * onAvailable listeners
         * @property onAvailStack
         * @static
         * @private
         */
        onAvailStack = [],

        /**
         * Counter for auto id generation
         * @property counter
         * @static
         * @private
         */
        counter = 0,

        /**
         * Normalized keycodes for webkit/safari
         * @property webkitKeymap
         * @type {int: int}
         * @private
         * @static
         * @final
         */
         webkitKeymap = {
            63232: 38, // up
            63233: 40, // down
            63234: 37, // left
            63235: 39, // right
            63276: 33, // page up
            63277: 34, // page down
            25: 9      // SHIFT-TAB (Safari provides a different key code in
                       // this case, even though the shiftKey modifier is set)
        },

        isIE = YAHOO.env.ua.ie,

        // String constants used by the addFocusListener and removeFocusListener methods

        FOCUSIN = &quot;focusin&quot;,
        FOCUSOUT = &quot;focusout&quot;;

        return {

            /**
             * The number of times we should look for elements that are not
             * in the DOM at the time the event is requested after the document
             * has been loaded.  The default is 500@amp;40 ms, so it will poll
             * for 20 seconds or until all outstanding handlers are bound
             * (whichever comes first).
             * @property POLL_RETRYS
             * @type int
             * @static
             * @final
             */
            POLL_RETRYS: 500,

            /**
             * The poll interval in milliseconds
             * @property POLL_INTERVAL
             * @type int
             * @static
             * @final
             */
            POLL_INTERVAL: 40,

            /**
             * Element to bind, int constant
             * @property EL
             * @type int
             * @static
             * @final
             */
            EL: 0,

            /**
             * Type of event, int constant
             * @property TYPE
             * @type int
             * @static
             * @final
             */
            TYPE: 1,

            /**
             * Function to execute, int constant
             * @property FN
             * @type int
             * @static
             * @final
             */
            FN: 2,

            /**
             * Function wrapped for context correction and cleanup, int constant
             * @property WFN
             * @type int
             * @static
             * @final
             */
            WFN: 3,

            /**
             * Object passed in by the user that will be returned as a
             * parameter to the callback, int constant.  Specific to
             * unload listeners
             * @property OBJ
             * @type int
             * @static
             * @final
             */
            UNLOAD_OBJ: 3,

            /**
             * Adjusted context, either the element we are registering the event
             * on or the custom object passed in by the listener, int constant
             * @property ADJ_SCOPE
             * @type int
             * @static
             * @final
             */
            ADJ_SCOPE: 4,

            /**
             * The original obj passed into addListener
             * @property OBJ
             * @type int
             * @static
             * @final
             */
            OBJ: 5,

            /**
             * The original context parameter passed into addListener
             * @property OVERRIDE
             * @type int
             * @static
             * @final
             */
            OVERRIDE: 6,

            /**
             * The original capture parameter passed into addListener
             * @property CAPTURE
             * @type int
             * @static
             * @final
             */
            CAPTURE: 7,

            /**
             * addListener/removeListener can throw errors in unexpected scenarios.
             * These errors are suppressed, the method returns false, and this property
             * is set
             * @property lastError
             * @static
             * @type Error
             */
            lastError: null,

            /**
             * Safari detection
             * @property isSafari
             * @private
             * @static
             * @deprecated use YAHOO.env.ua.webkit
             */
            isSafari: YAHOO.env.ua.webkit,

            /**
             * webkit version
             * @property webkit
             * @type string
             * @private
             * @static
             * @deprecated use YAHOO.env.ua.webkit
             */
            webkit: YAHOO.env.ua.webkit,

            /**
             * IE detection
             * @property isIE
             * @private
             * @static
             * @deprecated use YAHOO.env.ua.ie
             */
            isIE: isIE,

            /**
             * poll handle
             * @property _interval
             * @static
             * @private
             */
            _interval: null,

            /**
             * document readystate poll handle
             * @property _dri
             * @static
             * @private
             */
             _dri: null,


            /**
             * Map of special event types
             * @property _specialTypes
             * @static
             * @private
             */
            _specialTypes: {
                focusin: (isIE ? &quot;focusin&quot; : &quot;focus&quot;),
                focusout: (isIE ? &quot;focusout&quot; : &quot;blur&quot;)
            },


            /**
             * True when the document is initially usable
             * @property DOMReady
             * @type boolean
             * @static
             */
            DOMReady: false,

            /**
             * Errors thrown by subscribers of custom events are caught
             * and the error message is written to the debug console.  If
             * this property is set to true, it will also re-throw the
             * error.
             * @property throwErrors
             * @type boolean
             * @default false
             */
            throwErrors: false,


            /**
             * @method startInterval
             * @static
             * @private
             */
            startInterval: function() {
                if (!this._interval) {
                    // var self = this;
                    // var callback = function() { self._tryPreloadAttach(); };
                    // this._interval = setInterval(callback, this.POLL_INTERVAL);
                    this._interval = YAHOO.lang.later(this.POLL_INTERVAL, this, this._tryPreloadAttach, null, true);
                }
            },

            /**
             * Executes the supplied callback when the item with the supplied
             * id is found.  This is meant to be used to execute behavior as
             * soon as possible as the page loads.  If you use this after the
             * initial page load it will poll for a fixed time for the element.
             * The number of times it will poll and the frequency are
             * configurable.  By default it will poll for 10 seconds.
             *
             * &lt;p&gt;The callback is executed with a single parameter:
             * the custom object parameter, if provided.&lt;/p&gt;
             *
             * @method onAvailable
             *
             * @param {string||string[]}   id the id of the element, or an array
             * of ids to look for.
             * @param {function} fn what to execute when the element is found.
             * @param {object}   obj an optional object to be passed back as
             *                   a parameter to fn.
             * @param {boolean|object}  overrideContext If set to true, fn will execute
             *                   in the context of obj, if set to an object it
             *                   will execute in the context of that object
             * @param checkContent {boolean} check child node readiness (onContentReady)
             * @static
             */
            onAvailable: function(id, fn, obj, overrideContext, checkContent) {

                var a = (YAHOO.lang.isString(id)) ? [id] : id;

                for (var i=0; i&lt;a.length; i=i+1) {
                    onAvailStack.push({id:         a[i],
                                       fn:         fn,
                                       obj:        obj,
                                       overrideContext:   overrideContext,
                                       checkReady: checkContent });
                }

                retryCount = this.POLL_RETRYS;

                this.startInterval();
            },

            /**
             * Works the same way as onAvailable, but additionally checks the
             * state of sibling elements to determine if the content of the
             * available element is safe to modify.
             *
             * &lt;p&gt;The callback is executed with a single parameter:
             * the custom object parameter, if provided.&lt;/p&gt;
             *
             * @method onContentReady
             *
             * @param {string}   id the id of the element to look for.
             * @param {function} fn what to execute when the element is ready.
             * @param {object}   obj an optional object to be passed back as
             *                   a parameter to fn.
             * @param {boolean|object}  overrideContext If set to true, fn will execute
             *                   in the context of obj.  If an object, fn will
             *                   exectute in the context of that object
             *
             * @static
             */
            onContentReady: function(id, fn, obj, overrideContext) {
                this.onAvailable(id, fn, obj, overrideContext, true);
            },

            /**
             * Executes the supplied callback when the DOM is first usable.  This
             * will execute immediately if called after the DOMReady event has
             * fired.   @todo the DOMContentReady event does not fire when the
             * script is dynamically injected into the page.  This means the
             * DOMReady custom event will never fire in FireFox or Opera when the
             * library is injected.  It _will_ fire in Safari, and the IE
             * implementation would allow for us to fire it if the defered script
             * is not available.  We want this to behave the same in all browsers.
             * Is there a way to identify when the script has been injected
             * instead of included inline?  Is there a way to know whether the
             * window onload event has fired without having had a listener attached
             * to it when it did so?
             *
             * &lt;p&gt;The callback is a CustomEvent, so the signature is:&lt;/p&gt;
             * &lt;p&gt;type &amp;lt;string&amp;gt;, args &amp;lt;array&amp;gt;, customobject &amp;lt;object&amp;gt;&lt;/p&gt;
             * &lt;p&gt;For DOMReady events, there are no fire argments, so the
             * signature is:&lt;/p&gt;
             * &lt;p&gt;&quot;DOMReady&quot;, [], obj&lt;/p&gt;
             *
             *
             * @method onDOMReady
             *
             * @param {function} fn what to execute when the element is found.
             * @param {object}   obj an optional object to be passed back as
             *                   a parameter to fn.
             * @param {boolean|object}  overrideContext If set to true, fn will execute
             *                   in the context of obj, if set to an object it
             *                   will execute in the context of that object
             *
             * @static
             */
            // onDOMReady: function(fn, obj, overrideContext) {
            onDOMReady: function() {
                this.DOMReadyEvent.subscribe.apply(this.DOMReadyEvent, arguments);
            },


            /**
             * Appends an event handler
             *
             * @method _addListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to assign the
             *  listener to.
             * @param {String}   sType     The type of event to append
             * @param {Function} fn        The method the event invokes
             * @param {Object}   obj    An arbitrary object that will be
             *                             passed as a parameter to the handler
             * @param {Boolean|object}  overrideContext  If true, the obj passed in becomes
             *                             the execution context of the listener. If an
             *                             object, this object becomes the execution
             *                             context.
             * @param {boolen}      capture capture or bubble phase
             * @return {Boolean} True if the action was successful or defered,
             *                        false if one or more of the elements
             *                        could not have the listener attached,
             *                        or if the operation throws an exception.
             * @private
             * @static
             */
            _addListener: function(el, sType, fn, obj, overrideContext, bCapture) {

                if (!fn || !fn.call) {
                    YAHOO.log(sType + &quot; addListener failed, invalid callback&quot;, &quot;error&quot;, &quot;Event&quot;);
                    return false;
                }

                // The el argument can be an array of elements or element ids.
                if ( this._isValidCollection(el)) {
                    var ok = true;
                    for (var i=0,len=el.length; i&lt;len; ++i) {
                        ok = this.on(el[i],
                                       sType,
                                       fn,
                                       obj,
                                       overrideContext) &amp;&amp; ok;
                    }
                    return ok;

                } else if (YAHOO.lang.isString(el)) {
                    var oEl = this.getEl(el);
                    // If the el argument is a string, we assume it is
                    // actually the id of the element.  If the page is loaded
                    // we convert el to the actual element, otherwise we
                    // defer attaching the event until onload event fires

                    // check to see if we need to delay hooking up the event
                    // until after the page loads.
                    if (oEl) {
                        el = oEl;
                    } else {
                        // defer adding the event until the element is available
                        this.onAvailable(el, function() {
                           YAHOO.util.Event._addListener(el, sType, fn, obj, overrideContext, bCapture);
                        });

                        return true;
                    }
                }

                // Element should be an html element or an array if we get
                // here.
                if (!el) {
                    // this.logger.debug(&quot;unable to attach event &quot; + sType);
                    return false;
                }

                // we need to make sure we fire registered unload events
                // prior to automatically unhooking them.  So we hang on to
                // these instead of attaching them to the window and fire the
                // handles explicitly during our one unload event.
                if (&quot;unload&quot; == sType &amp;&amp; obj !== this) {
                    unloadListeners[unloadListeners.length] =
                            [el, sType, fn, obj, overrideContext];
                    return true;
                }

                // this.logger.debug(&quot;Adding handler: &quot; + el + &quot;, &quot; + sType);

                // if the user chooses to override the context, we use the custom
                // object passed in, otherwise the executing context will be the
                // HTML element that the event is registered on
                var context = el;
                if (overrideContext) {
                    if (overrideContext === true) {
                        context = obj;
                    } else {
                        context = overrideContext;
                    }
                }

                // wrap the function so we can return the obj object when
                // the event fires;
                var wrappedFn = function(e) {
                        return fn.call(context, YAHOO.util.Event.getEvent(e, el),
                                obj);
                    };

                var li = [el, sType, fn, wrappedFn, context, obj, overrideContext, bCapture];
                var index = listeners.length;
                // cache the listener so we can try to automatically unload
                listeners[index] = li;

                try {
                    this._simpleAdd(el, sType, wrappedFn, bCapture);
                } catch(ex) {
                    // handle an error trying to attach an event.  If it fails
                    // we need to clean up the cache
                    this.lastError = ex;
                    this.removeListener(el, sType, fn);
                    return false;
                }

                return true;

            },

            /**
             * Checks to see if the type requested is a special type
             * (as defined by the _specialTypes hash), and (if so) returns
             * the special type name.
             *
             * @method _getType
             *
             * @param {String}   sType     The type to look up
             * @private
             */
            _getType: function (type) {

                return this._specialTypes[type] || type;

            },


            /**
             * Appends an event handler
             *
             * @method addListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to assign the
             *  listener to.
             * @param {String}   sType     The type of event to append
             * @param {Function} fn        The method the event invokes
             * @param {Object}   obj    An arbitrary object that will be
             *                             passed as a parameter to the handler
             * @param {Boolean|object}  overrideContext  If true, the obj passed in becomes
             *                             the execution context of the listener. If an
             *                             object, this object becomes the execution
             *                             context.
             * @return {Boolean} True if the action was successful or defered,
             *                        false if one or more of the elements
             *                        could not have the listener attached,
             *                        or if the operation throws an exception.
             * @static
             */
            addListener: function (el, sType, fn, obj, overrideContext) {

                var capture = ((sType == FOCUSIN || sType == FOCUSOUT) &amp;&amp; !YAHOO.env.ua.ie) ? true : false;

                return this._addListener(el, this._getType(sType), fn, obj, overrideContext, capture);

            },


            /**
             * Attaches a focusin event listener to the specified element for
             * the purpose of listening for the focus event on the element's
             * descendants.
             * @method addFocusListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to assign the
             *  listener to.
             * @param {Function} fn        The method the event invokes
             * @param {Object}   obj    An arbitrary object that will be
             *                             passed as a parameter to the handler
             * @param {Boolean|object}  overrideContext  If true, the obj passed in becomes
             *                             the execution context of the listener. If an
             *                             object, this object becomes the execution
             *                             context.
             * @return {Boolean} True if the action was successful or defered,
             *                        false if one or more of the elements
             *                        could not have the listener attached,
             *                        or if the operation throws an exception.
             * @static
            * @deprecated use YAHOO.util.Event.on and specify &quot;focusin&quot; as the event type.
             */
            addFocusListener: function (el, fn, obj, overrideContext) {
                return this.on(el, FOCUSIN, fn, obj, overrideContext);
            },


            /**
             * Removes a focusin event listener to the specified element for
             * the purpose of listening for the focus event on the element's
             * descendants.
             *
             * @method removeFocusListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to remove
             *  the listener from.
             * @param {Function} fn the method the event invokes.  If fn is
             *  undefined, then all event handlers for the type of event are
             *  removed.
             * @return {boolean} true if the unbind was successful, false
             *  otherwise.
             * @static
             * @deprecated use YAHOO.util.Event.removeListener and specify &quot;focusin&quot; as the event type.
             */
            removeFocusListener: function (el, fn) {
                return this.removeListener(el, FOCUSIN, fn);
            },

            /**
             * Attaches a focusout event listener to the specified element for
             * the purpose of listening for the blur event on the element's
             * descendants.
             *
             * @method addBlurListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to assign the
             *  listener to.
             * @param {Function} fn        The method the event invokes
             * @param {Object}   obj    An arbitrary object that will be
             *                             passed as a parameter to the handler
             * @param {Boolean|object}  overrideContext  If true, the obj passed in becomes
             *                             the execution context of the listener. If an
             *                             object, this object becomes the execution
             *                             context.
             * @return {Boolean} True if the action was successful or defered,
             *                        false if one or more of the elements
             *                        could not have the listener attached,
             *                        or if the operation throws an exception.
             * @static
             * @deprecated use YAHOO.util.Event.on and specify &quot;focusout&quot; as the event type.
             */
            addBlurListener: function (el, fn, obj, overrideContext) {
                return this.on(el, FOCUSOUT, fn, obj, overrideContext);
            },

            /**
             * Removes a focusout event listener to the specified element for
             * the purpose of listening for the blur event on the element's
             * descendants.
             *
             * @method removeBlurListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to remove
             *  the listener from.
             * @param {Function} fn the method the event invokes.  If fn is
             *  undefined, then all event handlers for the type of event are
             *  removed.
             * @return {boolean} true if the unbind was successful, false
             *  otherwise.
             * @static
             * @deprecated use YAHOO.util.Event.removeListener and specify &quot;focusout&quot; as the event type.
             */
            removeBlurListener: function (el, fn) {
                return this.removeListener(el, FOCUSOUT, fn);
            },

            /**
             * Removes an event listener
             *
             * @method removeListener
             *
             * @param {String|HTMLElement|Array|NodeList} el An id, an element
             *  reference, or a collection of ids and/or elements to remove
             *  the listener from.
             * @param {String} sType the type of event to remove.
             * @param {Function} fn the method the event invokes.  If fn is
             *  undefined, then all event handlers for the type of event are
             *  removed.
             * @return {boolean} true if the unbind was successful, false
             *  otherwise.
             * @static
             */
            removeListener: function(el, sType, fn) {
                var i, len, li;

                sType = this._getType(sType);

                // The el argument can be a string
                if (typeof el == &quot;string&quot;) {
                    el = this.getEl(el);
                // The el argument can be an array of elements or element ids.
                } else if ( this._isValidCollection(el)) {
                    var ok = true;
                    for (i=el.length-1; i&gt;-1; i--) {
                        ok = ( this.removeListener(el[i], sType, fn) &amp;&amp; ok );
                    }
                    return ok;
                }

                if (!fn || !fn.call) {
                    // this.logger.debug(&quot;Error, function is not valid &quot; + fn);
                    //return false;
                    return this.purgeElement(el, false, sType);
                }

                if (&quot;unload&quot; == sType) {

                    for (i=unloadListeners.length-1; i&gt;-1; i--) {
                        li = unloadListeners[i];
                        if (li &amp;&amp;
                            li[0] == el &amp;&amp;
                            li[1] == sType &amp;&amp;
                            li[2] == fn) {
                                unloadListeners.splice(i, 1);
                                // unloadListeners[i]=null;
                                return true;
                        }
                    }

                    return false;
                }

                var cacheItem = null;

                // The index is a hidden parameter; needed to remove it from
                // the method signature because it was tempting users to
                // try and take advantage of it, which is not possible.
                var index = arguments[3];

                if (&quot;undefined&quot; === typeof index) {
                    index = this._getCacheIndex(listeners, el, sType, fn);
                }

                if (index &gt;= 0) {
                    cacheItem = listeners[index];
                }

                if (!el || !cacheItem) {
                    // this.logger.debug(&quot;cached listener not found&quot;);
                    return false;
                }

                // this.logger.debug(&quot;Removing handler: &quot; + el + &quot;, &quot; + sType);

                var bCapture = cacheItem[this.CAPTURE] === true ? true : false;

                try {
                    this._simpleRemove(el, sType, cacheItem[this.WFN], bCapture);
                } catch(ex) {
                    this.lastError = ex;
                    return false;
                }

                // removed the wrapped handler
                delete listeners[index][this.WFN];
                delete listeners[index][this.FN];
                listeners.splice(index, 1);
                // listeners[index]=null;

                return true;

            },

            /**
             * Returns the event's target element.  Safari sometimes provides
             * a text node, and this is automatically resolved to the text
             * node's parent so that it behaves like other browsers.
             * @method getTarget
             * @param {Event} ev the event
             * @param {boolean} resolveTextNode when set to true the target's
             *                  parent will be returned if the target is a
             *                  text node.  @deprecated, the text node is
             *                  now resolved automatically
             * @return {HTMLElement} the event's target
             * @static
             */
            getTarget: function(ev, resolveTextNode) {
                var t = ev.target || ev.srcElement;
                return this.resolveTextNode(t);
            },

            /**
             * In some cases, some browsers will return a text node inside
             * the actual element that was targeted.  This normalizes the
             * return value for getTarget and getRelatedTarget.
             *
             * If accessing a property of the node throws an error, this is
             * probably the anonymous div wrapper Gecko adds inside text
             * nodes.  This likely will only occur when attempting to access
             * the relatedTarget.  In this case, we now return null because
             * the anonymous div is completely useless and we do not know
             * what the related target was because we can't even get to
             * the element's parent node.
             *
             * @method resolveTextNode
             * @param {HTMLElement} node node to resolve
             * @return {HTMLElement} the normized node
             * @static
             */
            resolveTextNode: function(n) {
                try {
                    if (n &amp;&amp; 3 == n.nodeType) {
                        return n.parentNode;
                    }
                } catch(e) {
                    return null;
                }

                return n;
            },

            /**
             * Returns the event's pageX
             * @method getPageX
             * @param {Event} ev the event
             * @return {int} the event's pageX
             * @static
             */
            getPageX: function(ev) {
                var x = ev.pageX;
                if (!x &amp;&amp; 0 !== x) {
                    x = ev.clientX || 0;

                    if ( this.isIE ) {
                        x += this._getScrollLeft();
                    }
                }

                return x;
            },

            /**
             * Returns the event's pageY
             * @method getPageY
             * @param {Event} ev the event
             * @return {int} the event's pageY
             * @static
             */
            getPageY: function(ev) {
                var y = ev.pageY;
                if (!y &amp;&amp; 0 !== y) {
                    y = ev.clientY || 0;

                    if ( this.isIE ) {
                        y += this._getScrollTop();
                    }
                }


                return y;
            },

            /**
             * Returns the pageX and pageY properties as an indexed array.
             * @method getXY
             * @param {Event} ev the event
             * @return {[x, y]} the pageX and pageY properties of the event
             * @static
             */
            getXY: function(ev) {
                return [this.getPageX(ev), this.getPageY(ev)];
            },

            /**
             * Returns the event's related target
             * @method getRelatedTarget
             * @param {Event} ev the event
             * @return {HTMLElement} the event's relatedTarget
             * @static
             */
            getRelatedTarget: function(ev) {
                var t = ev.relatedTarget;
                if (!t) {
                    if (ev.type == &quot;mouseout&quot;) {
                        t = ev.toElement;
                    } else if (ev.type == &quot;mouseover&quot;) {
                        t = ev.fromElement;
                    }
                }

                return this.resolveTextNode(t);
            },

            /**
             * Returns the time of the event.  If the time is not included, the
             * event is modified using the current time.
             * @method getTime
             * @param {Event} ev the event
             * @return {Date} the time of the event
             * @static
             */
            getTime: function(ev) {
                if (!ev.time) {
                    var t = new Date().getTime();
                    try {
                        ev.time = t;
                    } catch(ex) {
                        this.lastError = ex;
                        return t;
                    }
                }

                return ev.time;
            },

            /**
             * Convenience method for stopPropagation + preventDefault
             * @method stopEvent
             * @param {Event} ev the event
             * @static
             */
            stopEvent: function(ev) {
                this.stopPropagation(ev);
                this.preventDefault(ev);
            },

            /**
             * Stops event propagation
             * @method stopPropagation
             * @param {Event} ev the event
             * @static
             */
            stopPropagation: function(ev) {
                if (ev.stopPropagation) {
                    ev.stopPropagation();
                } else {
                    ev.cancelBubble = true;
                }
            },

            /**
             * Prevents the default behavior of the event
             * @method preventDefault
             * @param {Event} ev the event
             * @static
             */
            preventDefault: function(ev) {
                if (ev.preventDefault) {
                    ev.preventDefault();
                } else {
                    ev.returnValue = false;
                }
            },

            /**
             * Finds the event in the window object, the caller's arguments, or
             * in the arguments of another method in the callstack.  This is
             * executed automatically for events registered through the event
             * manager, so the implementer should not normally need to execute
             * this function at all.
             * @method getEvent
             * @param {Event} e the event parameter from the handler
             * @param {HTMLElement} boundEl the element the listener is attached to
             * @return {Event} the event
             * @static
             */
            getEvent: function(e, boundEl) {
                var ev = e || window.event;

                if (!ev) {
                    var c = this.getEvent.caller;
                    while (c) {
                        ev = c.arguments[0];
                        if (ev &amp;&amp; Event == ev.constructor) {
                            break;
                        }
                        c = c.caller;
                    }
                }

                return ev;
            },

            /**
             * Returns the charcode for an event
             * @method getCharCode
             * @param {Event} ev the event
             * @return {int} the event's charCode
             * @static
             */
            getCharCode: function(ev) {
                var code = ev.keyCode || ev.charCode || 0;

                // webkit key normalization
                if (YAHOO.env.ua.webkit &amp;&amp; (code in webkitKeymap)) {
                    code = webkitKeymap[code];
                }
                return code;
            },

            /**
             * Locating the saved event handler data by function ref
             *
             * @method _getCacheIndex
             * @static
             * @private
             */
            _getCacheIndex: function(a, el, sType, fn) {
                for (var i=0, l=a.length; i&lt;l; i=i+1) {
                    var li = a[i];
                    if ( li                 &amp;&amp;
                         li[this.FN] == fn  &amp;&amp;
                         li[this.EL] == el  &amp;&amp;
                         li[this.TYPE] == sType ) {
                        return i;
                    }
                }

                return -1;
            },

            /**
             * Generates an unique ID for the element if it does not already
             * have one.
             * @method generateId
             * @param el the element to create the id for
             * @return {string} the resulting id of the element
             * @static
             */
            generateId: function(el) {
                var id = el.id;

                if (!id) {
                    id = &quot;yuievtautoid-&quot; + counter;
                    ++counter;
                    el.id = id;
                }

                return id;
            },


            /**
             * We want to be able to use getElementsByTagName as a collection
             * to attach a group of events to.  Unfortunately, different
             * browsers return different types of collections.  This function
             * tests to determine if the object is array-like.  It will also
             * fail if the object is an array, but is empty.
             * @method _isValidCollection
             * @param o the object to test
             * @return {boolean} true if the object is array-like and populated
             * @static
             * @private
             */
            _isValidCollection: function(o) {
                try {
                    return ( o                     &amp;&amp; // o is something
                             typeof o !== &quot;string&quot; &amp;&amp; // o is not a string
                             o.length              &amp;&amp; // o is indexed
                             !o.tagName            &amp;&amp; // o is not an HTML element
                             !o.alert              &amp;&amp; // o is not a window
                             typeof o[0] !== &quot;undefined&quot; );
                } catch(ex) {
                    YAHOO.log(&quot;node access error (xframe?)&quot;, &quot;warn&quot;);
                    return false;
                }

            },

            /**
             * @private
             * @property elCache
             * DOM element cache
             * @static
             * @deprecated Elements are not cached due to issues that arise when
             * elements are removed and re-added
             */
            elCache: {},

            /**
             * We cache elements bound by id because when the unload event
             * fires, we can no longer use document.getElementById
             * @method getEl
             * @static
             * @private
             * @deprecated Elements are not cached any longer
             */
            getEl: function(id) {
                return (typeof id === &quot;string&quot;) ? document.getElementById(id) : id;
            },

            /**
             * Clears the element cache
             * @deprecated Elements are not cached any longer
             * @method clearCache
             * @static
             * @private
             */
            clearCache: function() { },

            /**
             * Custom event the fires when the dom is initially usable
             * @event DOMReadyEvent
             */
            DOMReadyEvent: new YAHOO.util.CustomEvent(&quot;DOMReady&quot;, YAHOO, 0, 0, 1),

            /**
             * hook up any deferred listeners
             * @method _load
             * @static
             * @private
             */
            _load: function(e) {

                if (!loadComplete) {
                    loadComplete = true;
                    var EU = YAHOO.util.Event;

                    // Just in case DOMReady did not go off for some reason
                    EU._ready();

                    // Available elements may not have been detected before the
                    // window load event fires. Try to find them now so that the
                    // the user is more likely to get the onAvailable notifications
                    // before the window load notification
                    EU._tryPreloadAttach();

                }
            },

            /**
             * Fires the DOMReady event listeners the first time the document is
             * usable.
             * @method _ready
             * @static
             * @private
             */
            _ready: function(e) {
                var EU = YAHOO.util.Event;
                if (!EU.DOMReady) {
                    EU.DOMReady=true;

                    // Fire the content ready custom event
                    EU.DOMReadyEvent.fire();

                    // Remove the DOMContentLoaded (FF/Opera)
                    EU._simpleRemove(document, &quot;DOMContentLoaded&quot;, EU._ready);
                }
            },

            /**
             * Polling function that runs before the onload event fires,
             * attempting to attach to DOM Nodes as soon as they are
             * available
             * @method _tryPreloadAttach
             * @static
             * @private
             */
            _tryPreloadAttach: function() {

                if (onAvailStack.length === 0) {
                    retryCount = 0;
                    if (this._interval) {
                        // clearInterval(this._interval);
                        this._interval.cancel();
                        this._interval = null;
                    }
                    return;
                }

                if (this.locked) {
                    return;
                }

                if (this.isIE) {
                    // Hold off if DOMReady has not fired and check current
                    // readyState to protect against the IE operation aborted
                    // issue.
                    if (!this.DOMReady) {
                        this.startInterval();
                        return;
                    }
                }

                this.locked = true;

                // this.logger.debug(&quot;tryPreloadAttach&quot;);

                // keep trying until after the page is loaded.  We need to
                // check the page load state prior to trying to bind the
                // elements so that we can be certain all elements have been
                // tested appropriately
                var tryAgain = !loadComplete;
                if (!tryAgain) {
                    tryAgain = (retryCount &gt; 0 &amp;&amp; onAvailStack.length &gt; 0);
                }

                // onAvailable
                var notAvail = [];

                var executeItem = function (el, item) {
                    var context = el;
                    if (item.overrideContext) {
                        if (item.overrideContext === true) {
                            context = item.obj;
                        } else {
                            context = item.overrideContext;
                        }
                    }
                    item.fn.call(context, item.obj);
                };

                var i, len, item, el, ready=[];

                // onAvailable onContentReady
                for (i=0, len=onAvailStack.length; i&lt;len; i=i+1) {
                    item = onAvailStack[i];
                    if (item) {
                        el = this.getEl(item.id);
                        if (el) {
                            if (item.checkReady) {
                                if (loadComplete || el.nextSibling || !tryAgain) {
                                    ready.push(item);
                                    onAvailStack[i] = null;
                                }
                            } else {
                                executeItem(el, item);
                                onAvailStack[i] = null;
                            }
                        } else {
                            notAvail.push(item);
                        }
                    }
                }

                // make sure onContentReady fires after onAvailable
                for (i=0, len=ready.length; i&lt;len; i=i+1) {
                    item = ready[i];
                    executeItem(this.getEl(item.id), item);
                }


                retryCount--;

                if (tryAgain) {
                    for (i=onAvailStack.length-1; i&gt;-1; i--) {
                        item = onAvailStack[i];
                        if (!item || !item.id) {
                            onAvailStack.splice(i, 1);
                        }
                    }

                    this.startInterval();
                } else {
                    if (this._interval) {
                        // clearInterval(this._interval);
                        this._interval.cancel();
                        this._interval = null;
                    }
                }

                this.locked = false;

            },

            /**
             * Removes all listeners attached to the given element via addListener.
             * Optionally, the node's children can also be purged.
             * Optionally, you can specify a specific type of event to remove.
             * @method purgeElement
             * @param {HTMLElement} el the element to purge
             * @param {boolean} recurse recursively purge this element's children
             * as well.  Use with caution.
             * @param {string} sType optional type of listener to purge. If
             * left out, all listeners will be removed
             * @static
             */
            purgeElement: function(el, recurse, sType) {
                var oEl = (YAHOO.lang.isString(el)) ? this.getEl(el) : el;
                var elListeners = this.getListeners(oEl, sType), i, len;
                if (elListeners) {
                    for (i=elListeners.length-1; i&gt;-1; i--) {
                        var l = elListeners[i];
                        this.removeListener(oEl, l.type, l.fn);
                    }
                }

                if (recurse &amp;&amp; oEl &amp;&amp; oEl.childNodes) {
                    for (i=0,len=oEl.childNodes.length; i&lt;len ; ++i) {
                        this.purgeElement(oEl.childNodes[i], recurse, sType);
                    }
                }
            },

            /**
             * Returns all listeners attached to the given element via addListener.
             * Optionally, you can specify a specific type of event to return.
             * @method getListeners
             * @param el {HTMLElement|string} the element or element id to inspect
             * @param sType {string} optional type of listener to return. If
             * left out, all listeners will be returned
             * @return {Object} the listener. Contains the following fields:
             * &amp;nbsp;&amp;nbsp;type:   (string)   the type of event
             * &amp;nbsp;&amp;nbsp;fn:     (function) the callback supplied to addListener
             * &amp;nbsp;&amp;nbsp;obj:    (object)   the custom object supplied to addListener
             * &amp;nbsp;&amp;nbsp;adjust: (boolean|object)  whether or not to adjust the default context
             * &amp;nbsp;&amp;nbsp;scope: (boolean)  the derived context based on the adjust parameter
             * &amp;nbsp;&amp;nbsp;index:  (int)      its position in the Event util listener cache
             * @static
             */
            getListeners: function(el, sType) {
                var results=[], searchLists;
                if (!sType) {
                    searchLists = [listeners, unloadListeners];
                } else if (sType === &quot;unload&quot;) {
                    searchLists = [unloadListeners];
                } else {
                    sType = this._getType(sType);
                    searchLists = [listeners];
                }

                var oEl = (YAHOO.lang.isString(el)) ? this.getEl(el) : el;

                for (var j=0;j&lt;searchLists.length; j=j+1) {
                    var searchList = searchLists[j];
                    if (searchList) {
                        for (var i=0,len=searchList.length; i&lt;len ; ++i) {
                            var l = searchList[i];
                            if ( l  &amp;&amp; l[this.EL] === oEl &amp;&amp;
                                    (!sType || sType === l[this.TYPE]) ) {
                                results.push({
                                    type:   l[this.TYPE],
                                    fn:     l[this.FN],
                                    obj:    l[this.OBJ],
                                    adjust: l[this.OVERRIDE],
                                    scope:  l[this.ADJ_SCOPE],
                                    index:  i
                                });
                            }
                        }
                    }
                }

                return (results.length) ? results : null;
            },

            /**
             * Removes all listeners registered by pe.event.  Called
             * automatically during the unload event.
             * @method _unload
             * @static
             * @private
             */
            _unload: function(e) {

                var EU = YAHOO.util.Event, i, j, l, len, index,
                         ul = unloadListeners.slice(), context;

                // execute and clear stored unload listeners
                for (i=0, len=unloadListeners.length; i&lt;len; ++i) {
                    l = ul[i];
                    if (l) {
                        try {
                            context = window;
                            if (l[EU.ADJ_SCOPE]) {
                                if (l[EU.ADJ_SCOPE] === true) {
                                    context = l[EU.UNLOAD_OBJ];
                                } else {
                                    context = l[EU.ADJ_SCOPE];
                                }
                            }
                            l[EU.FN].call(context, EU.getEvent(e, l[EU.EL]), l[EU.UNLOAD_OBJ] );
                        } catch(e1) {}
                        ul[i] = null;
                    }
                }

                l = null;
                context = null;
                unloadListeners = null;

                // Remove listeners to handle IE memory leaks
                // 2.5.0 listeners are removed for all browsers again.  FireFox preserves
                // at least some listeners between page refreshes, potentially causing
                // errors during page load (mouseover listeners firing before they
                // should if the user moves the mouse at the correct moment).
                if (listeners) {
                    for (j=listeners.length-1; j&gt;-1; j--) {
                        l = listeners[j];
                        if (l) {
                            try {
                                EU.removeListener(l[EU.EL], l[EU.TYPE], l[EU.FN], j);
                            } catch(e2) {}
                        }
                    }
                    l=null;
                }

                try {
                    EU._simpleRemove(window, &quot;unload&quot;, EU._unload);
                    EU._simpleRemove(window, &quot;load&quot;, EU._load);
                } catch(e3) {}

            },

            /**
             * Returns scrollLeft
             * @method _getScrollLeft
             * @static
             * @private
             */
            _getScrollLeft: function() {
                return this._getScroll()[1];
            },

            /**
             * Returns scrollTop
             * @method _getScrollTop
             * @static
             * @private
             */
            _getScrollTop: function() {
                return this._getScroll()[0];
            },

            /**
             * Returns the scrollTop and scrollLeft.  Used to calculate the
             * pageX and pageY in Internet Explorer
             * @method _getScroll
             * @static
             * @private
             */
            _getScroll: function() {
                var dd = document.documentElement, db = document.body;
                if (dd &amp;&amp; (dd.scrollTop || dd.scrollLeft)) {
                    return [dd.scrollTop, dd.scrollLeft];
                } else if (db) {
                    return [db.scrollTop, db.scrollLeft];
                } else {
                    return [0, 0];
                }
            },

            /**
             * Used by old versions of CustomEvent, restored for backwards
             * compatibility
             * @method regCE
             * @private
             * @static
             * @deprecated still here for backwards compatibility
             */
            regCE: function() {},

            /**
             * Adds a DOM event directly without the caching, cleanup, context adj, etc
             *
             * @method _simpleAdd
             * @param {HTMLElement} el      the element to bind the handler to
             * @param {string}      sType   the type of event handler
             * @param {function}    fn      the callback to invoke
             * @param {boolen}      capture capture or bubble phase
             * @static
             * @private
             */
            _simpleAdd: function () {
                if (window.addEventListener) {
                    return function(el, sType, fn, capture) {
                        el.addEventListener(sType, fn, (capture));
                    };
                } else if (window.attachEvent) {
                    return function(el, sType, fn, capture) {
                        el.attachEvent(&quot;on&quot; + sType, fn);
                    };
                } else {
                    return function(){};
                }
            }(),

            /**
             * Basic remove listener
             *
             * @method _simpleRemove
             * @param {HTMLElement} el      the element to bind the handler to
             * @param {string}      sType   the type of event handler
             * @param {function}    fn      the callback to invoke
             * @param {boolen}      capture capture or bubble phase
             * @static
             * @private
             */
            _simpleRemove: function() {
                if (window.removeEventListener) {
                    return function (el, sType, fn, capture) {
                        el.removeEventListener(sType, fn, (capture));
                    };
                } else if (window.detachEvent) {
                    return function (el, sType, fn) {
                        el.detachEvent(&quot;on&quot; + sType, fn);
                    };
                } else {
                    return function(){};
                }
            }()
        };

    }();

    (function() {
        var EU = YAHOO.util.Event;

        /**
         * Appends an event handler.  This is an alias for &lt;code&gt;addListener&lt;/code&gt;
         *
         * @method on
         *
         * @param {String|HTMLElement|Array|NodeList} el An id, an element
         *  reference, or a collection of ids and/or elements to assign the
         *  listener to.
         * @param {String}   sType     The type of event to append
         * @param {Function} fn        The method the event invokes
         * @param {Object}   obj    An arbitrary object that will be
         *                             passed as a parameter to the handler
         * @param {Boolean|object}  overrideContext  If true, the obj passed in becomes
         *                             the execution context of the listener. If an
         *                             object, this object becomes the execution
         *                             context.
         * @return {Boolean} True if the action was successful or defered,
         *                        false if one or more of the elements
         *                        could not have the listener attached,
         *                        or if the operation throws an exception.
         * @static
         */
        EU.on = EU.addListener;

        /**
         * YAHOO.util.Event.onFocus is an alias for addFocusListener
         * @method onFocus
         * @see addFocusListener
         * @static
         * @deprecated use YAHOO.util.Event.on and specify &quot;focusin&quot; as the event type.
         */
        EU.onFocus = EU.addFocusListener;

        /**
         * YAHOO.util.Event.onBlur is an alias for addBlurListener
         * @method onBlur
         * @see addBlurListener
         * @static
         * @deprecated use YAHOO.util.Event.on and specify &quot;focusout&quot; as the event type.
         */
        EU.onBlur = EU.addBlurListener;

/*! DOMReady: based on work by: Dean Edwards/John Resig/Matthias Miller/Diego Perini */

        // Internet Explorer: use the readyState of a defered script.
        // This isolates what appears to be a safe moment to manipulate
        // the DOM prior to when the document's readyState suggests
        // it is safe to do so.
        if (EU.isIE) {
            if (self !== self.top) {
                document.onreadystatechange = function() {
                    if (document.readyState == 'complete') {
                        document.onreadystatechange = null;
                        EU._ready();
                    }
                };
            } else {

                // Process onAvailable/onContentReady items when the
                // DOM is ready.
                YAHOO.util.Event.onDOMReady(
                        YAHOO.util.Event._tryPreloadAttach,
                        YAHOO.util.Event, true);

                var n = document.createElement('p');

                EU._dri = setInterval(function() {
                    try {
                        // throws an error if doc is not ready
                        n.doScroll('left');
                        clearInterval(EU._dri);
                        EU._dri = null;
                        EU._ready();
                        n = null;
                    } catch (ex) {
                    }
                }, EU.POLL_INTERVAL);
            }

        // The document's readyState in Safari currently will
        // change to loaded/complete before images are loaded.
        } else if (EU.webkit &amp;&amp; EU.webkit &lt; 525) {

            EU._dri = setInterval(function() {
                var rs=document.readyState;
                if (&quot;loaded&quot; == rs || &quot;complete&quot; == rs) {
                    clearInterval(EU._dri);
                    EU._dri = null;
                    EU._ready();
                }
            }, EU.POLL_INTERVAL);

        // FireFox and Opera: These browsers provide a event for this
        // moment.  The latest WebKit releases now support this event.
        } else {

            EU._simpleAdd(document, &quot;DOMContentLoaded&quot;, EU._ready);

        }
        /////////////////////////////////////////////////////////////


        EU._simpleAdd(window, &quot;load&quot;, EU._load);
        EU._simpleAdd(window, &quot;unload&quot;, EU._unload);
        EU._tryPreloadAttach();
    })();

}
/**
 * EventProvider is designed to be used with YAHOO.augment to wrap
 * CustomEvents in an interface that allows events to be subscribed to
 * and fired by name.  This makes it possible for implementing code to
 * subscribe to an event that either has not been created yet, or will
 * not be created at all.
 *
 * @Class EventProvider
 */
YAHOO.util.EventProvider = function() { };

YAHOO.util.EventProvider.prototype = {

    /**
     * Private storage of custom events
     * @property __yui_events
     * @type Object[]
     * @private
     */
    __yui_events: null,

    /**
     * Private storage of custom event subscribers
     * @property __yui_subscribers
     * @type Object[]
     * @private
     */
    __yui_subscribers: null,

    /**
     * Subscribe to a CustomEvent by event type
     *
     * @method subscribe
     * @param p_type     {string}   the type, or name of the event
     * @param p_fn       {function} the function to exectute when the event fires
     * @param p_obj      {Object}   An object to be passed along when the event
     *                              fires
     * @param overrideContext {boolean}  If true, the obj passed in becomes the
     *                              execution scope of the listener
     */
    subscribe: function(p_type, p_fn, p_obj, overrideContext) {

        this.__yui_events = this.__yui_events || {};
        var ce = this.__yui_events[p_type];

        if (ce) {
            ce.subscribe(p_fn, p_obj, overrideContext);
        } else {
            this.__yui_subscribers = this.__yui_subscribers || {};
            var subs = this.__yui_subscribers;
            if (!subs[p_type]) {
                subs[p_type] = [];
            }
            subs[p_type].push(
                { fn: p_fn, obj: p_obj, overrideContext: overrideContext } );
        }
    },

    /**
     * Unsubscribes one or more listeners the from the specified event
     * @method unsubscribe
     * @param p_type {string}   The type, or name of the event.  If the type
     *                          is not specified, it will attempt to remove
     *                          the listener from all hosted events.
     * @param p_fn   {Function} The subscribed function to unsubscribe, if not
     *                          supplied, all subscribers will be removed.
     * @param p_obj  {Object}   The custom object passed to subscribe.  This is
     *                        optional, but if supplied will be used to
     *                        disambiguate multiple listeners that are the same
     *                        (e.g., you subscribe many object using a function
     *                        that lives on the prototype)
     * @return {boolean} true if the subscriber was found and detached.
     */
    unsubscribe: function(p_type, p_fn, p_obj) {
        this.__yui_events = this.__yui_events || {};
        var evts = this.__yui_events;
        if (p_type) {
            var ce = evts[p_type];
            if (ce) {
                return ce.unsubscribe(p_fn, p_obj);
            }
        } else {
            var ret = true;
            for (var i in evts) {
                if (YAHOO.lang.hasOwnProperty(evts, i)) {
                    ret = ret &amp;&amp; evts[i].unsubscribe(p_fn, p_obj);
                }
            }
            return ret;
        }

        return false;
    },

    /**
     * Removes all listeners from the specified event.  If the event type
     * is not specified, all listeners from all hosted custom events will
     * be removed.
     * @method unsubscribeAll
     * @param p_type {string}   The type, or name of the event
     */
    unsubscribeAll: function(p_type) {
        return this.unsubscribe(p_type);
    },

    /**
     * Creates a new custom event of the specified type.  If a custom event
     * by that name already exists, it will not be re-created.  In either
     * case the custom event is returned.
     *
     * @method createEvent
     *
     * @param p_type {string} the type, or name of the event
     * @param p_config {object} optional config params.  Valid properties are:
     *
     *  &lt;ul&gt;
     *    &lt;li&gt;
     *      scope: defines the default execution scope.  If not defined
     *      the default scope will be this instance.
     *    &lt;/li&gt;
     *    &lt;li&gt;
     *      silent: if true, the custom event will not generate log messages.
     *      This is false by default.
     *    &lt;/li&gt;
     *    &lt;li&gt;
     *      fireOnce: if true, the custom event will only notify subscribers
     *      once regardless of the number of times the event is fired.  In
     *      addition, new subscribers will be executed immediately if the
     *      event has already fired.
     *      This is false by default.
     *    &lt;/li&gt;
     *    &lt;li&gt;
     *      onSubscribeCallback: specifies a callback to execute when the
     *      event has a new subscriber.  This will fire immediately for
     *      each queued subscriber if any exist prior to the creation of
     *      the event.
     *    &lt;/li&gt;
     *  &lt;/ul&gt;
     *
     *  @return {CustomEvent} the custom event
     *
     */
    createEvent: function(p_type, p_config) {

        this.__yui_events = this.__yui_events || {};
        var opts = p_config || {},
            events = this.__yui_events, ce;

        if (events[p_type]) {
YAHOO.log(&quot;EventProvider createEvent skipped: '&quot;+p_type+&quot;' already exists&quot;);
        } else {

            ce = new YAHOO.util.CustomEvent(p_type, opts.scope || this, opts.silent,
                         YAHOO.util.CustomEvent.FLAT, opts.fireOnce);

            events[p_type] = ce;

            if (opts.onSubscribeCallback) {
                ce.subscribeEvent.subscribe(opts.onSubscribeCallback);
            }

            this.__yui_subscribers = this.__yui_subscribers || {};
            var qs = this.__yui_subscribers[p_type];

            if (qs) {
                for (var i=0; i&lt;qs.length; ++i) {
                    ce.subscribe(qs[i].fn, qs[i].obj, qs[i].overrideContext);
                }
            }
        }

        return events[p_type];
    },


   /**
     * Fire a custom event by name.  The callback functions will be executed
     * from the scope specified when the event was created, and with the
     * following parameters:
     *   &lt;ul&gt;
     *   &lt;li&gt;The first argument fire() was executed with&lt;/li&gt;
     *   &lt;li&gt;The custom object (if any) that was passed into the subscribe()
     *       method&lt;/li&gt;
     *   &lt;/ul&gt;
     * @method fireEvent
     * @param p_type    {string}  the type, or name of the event
     * @param arguments {Object*} an arbitrary set of parameters to pass to
     *                            the handler.
     * @return {boolean} the return value from CustomEvent.fire
     *
     */
    fireEvent: function(p_type) {

        this.__yui_events = this.__yui_events || {};
        var ce = this.__yui_events[p_type];

        if (!ce) {
YAHOO.log(p_type + &quot;event fired before it was created.&quot;);
            return null;
        }

        var args = [];
        for (var i=1; i&lt;arguments.length; ++i) {
            args.push(arguments[i]);
        }
        return ce.fire.apply(ce, args);
    },

    /**
     * Returns true if the custom event of the provided type has been created
     * with createEvent.
     * @method hasEvent
     * @param type {string} the type, or name of the event
     */
    hasEvent: function(type) {
        if (this.__yui_events) {
            if (this.__yui_events[type]) {
                return true;
            }
        }
        return false;
    }

};

(function() {

    var Event = YAHOO.util.Event, Lang = YAHOO.lang;

/**
* KeyListener is a utility that provides an easy interface for listening for
* keydown/keyup events fired against DOM elements.
* @namespace YAHOO.util
* @class KeyListener
* @constructor
* @param {HTMLElement} attachTo The element or element ID to which the key
*                               event should be attached
* @param {String}      attachTo The element or element ID to which the key
*                               event should be attached
* @param {Object}      keyData  The object literal representing the key(s)
*                               to detect. Possible attributes are
*                               shift(boolean), alt(boolean), ctrl(boolean)
*                               and keys(either an int or an array of ints
*                               representing keycodes).
* @param {Function}    handler  The CustomEvent handler to fire when the
*                               key event is detected
* @param {Object}      handler  An object literal representing the handler.
* @param {String}      event    Optional. The event (keydown or keyup) to
*                               listen for. Defaults automatically to keydown.
*
* @knownissue the &quot;keypress&quot; event is completely broken in Safari 2.x and below.
*             the workaround is use &quot;keydown&quot; for key listening.  However, if
*             it is desired to prevent the default behavior of the keystroke,
*             that can only be done on the keypress event.  This makes key
*             handling quite ugly.
* @knownissue keydown is also broken in Safari 2.x and below for the ESC key.
*             There currently is no workaround other than choosing another
*             key to listen for.
*/
YAHOO.util.KeyListener = function(attachTo, keyData, handler, event) {
    if (!attachTo) {
        YAHOO.log(&quot;No attachTo element specified&quot;, &quot;error&quot;);
    } else if (!keyData) {
        YAHOO.log(&quot;No keyData specified&quot;, &quot;error&quot;);
    } else if (!handler) {
        YAHOO.log(&quot;No handler specified&quot;, &quot;error&quot;);
    }

    if (!event) {
        event = YAHOO.util.KeyListener.KEYDOWN;
    }

    /**
    * The CustomEvent fired internally when a key is pressed
    * @event keyEvent
    * @private
    * @param {Object} keyData The object literal representing the key(s) to
    *                         detect. Possible attributes are shift(boolean),
    *                         alt(boolean), ctrl(boolean) and keys(either an
    *                         int or an array of ints representing keycodes).
    */
    var keyEvent = new YAHOO.util.CustomEvent(&quot;keyPressed&quot;);

    /**
    * The CustomEvent fired when the KeyListener is enabled via the enable()
    * function
    * @event enabledEvent
    * @param {Object} keyData The object literal representing the key(s) to
    *                         detect. Possible attributes are shift(boolean),
    *                         alt(boolean), ctrl(boolean) and keys(either an
    *                         int or an array of ints representing keycodes).
    */
    this.enabledEvent = new YAHOO.util.CustomEvent(&quot;enabled&quot;);

    /**
    * The CustomEvent fired when the KeyListener is disabled via the
    * disable() function
    * @event disabledEvent
    * @param {Object} keyData The object literal representing the key(s) to
    *                         detect. Possible attributes are shift(boolean),
    *                         alt(boolean), ctrl(boolean) and keys(either an
    *                         int or an array of ints representing keycodes).
    */
    this.disabledEvent = new YAHOO.util.CustomEvent(&quot;disabled&quot;);

    if (Lang.isString(attachTo)) {
        attachTo = document.getElementById(attachTo); // No Dom util
    }

    if (Lang.isFunction(handler)) {
        keyEvent.subscribe(handler);
    } else {
        keyEvent.subscribe(handler.fn, handler.scope, handler.correctScope);
    }

    /**
    * Handles the key event when a key is pressed.
    * @method handleKeyPress
    * @param {DOMEvent} e   The keypress DOM event
    * @param {Object}   obj The DOM event scope object
    * @private
    */
    function handleKeyPress(e, obj) {
        if (! keyData.shift) {
            keyData.shift = false;
        }
        if (! keyData.alt) {
            keyData.alt = false;
        }
        if (! keyData.ctrl) {
            keyData.ctrl = false;
        }

        // check held down modifying keys first
        if (e.shiftKey == keyData.shift &amp;&amp;
            e.altKey   == keyData.alt &amp;&amp;
            e.ctrlKey  == keyData.ctrl) { // if we pass this, all modifiers match

            var dataItem, keys = keyData.keys, key;

            if (YAHOO.lang.isArray(keys)) {
                for (var i=0;i&lt;keys.length;i++) {
                    dataItem = keys[i];
                    key = Event.getCharCode(e);

                    if (dataItem == key) {
                        keyEvent.fire(key, e);
                        break;
                    }
                }
            } else {
                key = Event.getCharCode(e);
                if (keys == key ) {
                    keyEvent.fire(key, e);
                }
            }
        }
    }

    /**
    * Enables the KeyListener by attaching the DOM event listeners to the
    * target DOM element
    * @method enable
    */
    this.enable = function() {
        if (! this.enabled) {
            Event.on(attachTo, event, handleKeyPress);
            this.enabledEvent.fire(keyData);
        }
        /**
        * Boolean indicating the enabled/disabled state of the Tooltip
        * @property enabled
        * @type Boolean
        */
        this.enabled = true;
    };

    /**
    * Disables the KeyListener by removing the DOM event listeners from the
    * target DOM element
    * @method disable
    */
    this.disable = function() {
        if (this.enabled) {
            Event.removeListener(attachTo, event, handleKeyPress);
            this.disabledEvent.fire(keyData);
        }
        this.enabled = false;
    };

    /**
    * Returns a String representation of the object.
    * @method toString
    * @return {String}  The string representation of the KeyListener
    */
    this.toString = function() {
        return &quot;KeyListener [&quot; + keyData.keys + &quot;] &quot; + attachTo.tagName +
                (attachTo.id ? &quot;[&quot; + attachTo.id + &quot;]&quot; : &quot;&quot;);
    };

};

var KeyListener = YAHOO.util.KeyListener;

/**
 * Constant representing the DOM &quot;keydown&quot; event.
 * @property YAHOO.util.KeyListener.KEYDOWN
 * @static
 * @final
 * @type String
 */
KeyListener.KEYDOWN = &quot;keydown&quot;;

/**
 * Constant representing the DOM &quot;keyup&quot; event.
 * @property YAHOO.util.KeyListener.KEYUP
 * @static
 * @final
 * @type String
 */
KeyListener.KEYUP = &quot;keyup&quot;;

/**
 * keycode constants for a subset of the special keys
 * @property KEY
 * @static
 * @final
 */
KeyListener.KEY = {
    ALT          : 18,
    BACK_SPACE   : 8,
    CAPS_LOCK    : 20,
    CONTROL      : 17,
    DELETE       : 46,
    DOWN         : 40,
    END          : 35,
    ENTER        : 13,
    ESCAPE       : 27,
    HOME         : 36,
    LEFT         : 37,
    META         : 224,
    NUM_LOCK     : 144,
    PAGE_DOWN    : 34,
    PAGE_UP      : 33,
    PAUSE        : 19,
    PRINTSCREEN  : 44,
    RIGHT        : 39,
    SCROLL_LOCK  : 145,
    SHIFT        : 16,
    SPACE        : 32,
    TAB          : 9,
    UP           : 38
};

})();
YAHOO.register(&quot;event&quot;, YAHOO.util.Event, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/****************************************************************************/
/****************************************************************************/
/****************************************************************************/

/**
 * The LogMsg class defines a single log message.
 *
 * @class LogMsg
 * @constructor
 * @param oConfigs {Object} Object literal of configuration params.
 */
YAHOO.widget.LogMsg = function(oConfigs) {
    // Parse configs
    /**
     * Log message.
     *
     * @property msg
     * @type String
     */
    this.msg =
    /**
     * Log timestamp.
     *
     * @property time
     * @type Date
     */
    this.time =

    /**
     * Log category.
     *
     * @property category
     * @type String
     */
    this.category =

    /**
     * Log source. The first word passed in as the source argument.
     *
     * @property source
     * @type String
     */
    this.source =

    /**
     * Log source detail. The remainder of the string passed in as the source argument, not
     * including the first word (if any).
     *
     * @property sourceDetail
     * @type String
     */
    this.sourceDetail = null;

    if (oConfigs &amp;&amp; (oConfigs.constructor == Object)) {
        for(var param in oConfigs) {
            if (oConfigs.hasOwnProperty(param)) {
                this[param] = oConfigs[param];
            }
        }
    }
};
/****************************************************************************/
/****************************************************************************/
/****************************************************************************/

/**
 * The LogWriter class provides a mechanism to log messages through
 * YAHOO.widget.Logger from a named source.
 *
 * @class LogWriter
 * @constructor
 * @param sSource {String} Source of LogWriter instance.
 */
YAHOO.widget.LogWriter = function(sSource) {
    if(!sSource) {
        YAHOO.log(&quot;Could not instantiate LogWriter due to invalid source.&quot;,
            &quot;error&quot;, &quot;LogWriter&quot;);
        return;
    }
    this._source = sSource;
 };

/////////////////////////////////////////////////////////////////////////////
//
// Public methods
//
/////////////////////////////////////////////////////////////////////////////

 /**
 * Public accessor to the unique name of the LogWriter instance.
 *
 * @method toString
 * @return {String} Unique name of the LogWriter instance.
 */
YAHOO.widget.LogWriter.prototype.toString = function() {
    return &quot;LogWriter &quot; + this._sSource;
};

/**
 * Logs a message attached to the source of the LogWriter.
 * Note: the LogReader adds the message and category to the DOM as HTML.
 *
 * @method log
 * @param sMsg {HTML} The log message.
 * @param sCategory {HTML} Category name.
 */
YAHOO.widget.LogWriter.prototype.log = function(sMsg, sCategory) {
    YAHOO.widget.Logger.log(sMsg, sCategory, this._source);
};

/**
 * Public accessor to get the source name.
 *
 * @method getSource
 * @return {String} The LogWriter source.
 */
YAHOO.widget.LogWriter.prototype.getSource = function() {
    return this._source;
};

/**
 * Public accessor to set the source name.
 *
 * @method setSource
 * @param sSource {String} Source of LogWriter instance.
 */
YAHOO.widget.LogWriter.prototype.setSource = function(sSource) {
    if(!sSource) {
        YAHOO.log(&quot;Could not set source due to invalid source.&quot;, &quot;error&quot;, this.toString());
        return;
    }
    else {
        this._source = sSource;
    }
};

/////////////////////////////////////////////////////////////////////////////
//
// Private member variables
//
/////////////////////////////////////////////////////////////////////////////

/**
 * Source of the LogWriter instance.
 *
 * @property _source
 * @type String
 * @private
 */
YAHOO.widget.LogWriter.prototype._source = null;


 /**
 * The Logger widget provides a simple way to read or write log messages in
 * JavaScript code. Integration with the YUI Library's debug builds allow
 * implementers to access under-the-hood events, errors, and debugging messages.
 * Output may be read through a LogReader console and/or output to a browser
 * console.
 *
 * @module logger
 * @requires yahoo, event, dom
 * @optional dragdrop
 * @namespace YAHOO.widget
 * @title Logger Widget
 */

/****************************************************************************/
/****************************************************************************/
/****************************************************************************/

// Define once
if(!YAHOO.widget.Logger) {
    /**
     * The singleton Logger class provides core log management functionality. Saves
     * logs written through the global YAHOO.log function or written by a LogWriter
     * instance. Provides access to logs for reading by a LogReader instance or
     * native browser console such as the Firebug extension to Firefox or Safari's
     * JavaScript console through integration with the console.log() method.
     *
     * @class Logger
     * @static
     */
    YAHOO.widget.Logger = {
        // Initialize properties
        loggerEnabled: true,
        _browserConsoleEnabled: false,
        categories: [&quot;info&quot;,&quot;warn&quot;,&quot;error&quot;,&quot;time&quot;,&quot;window&quot;],
        sources: [&quot;global&quot;],
        _stack: [], // holds all log msgs
        maxStackEntries: 2500,
        _startTime: new Date().getTime(), // static start timestamp
        _lastTime: null, // timestamp of last logged message
        _windowErrorsHandled: false,
        _origOnWindowError: null
    };

    /////////////////////////////////////////////////////////////////////////////
    //
    // Public properties
    //
    /////////////////////////////////////////////////////////////////////////////
    /**
     * True if Logger is enabled, false otherwise.
     *
     * @property loggerEnabled
     * @type Boolean
     * @static
     * @default true
     */

    /**
     * Array of categories.
     *
     * @property categories
     * @type String[]
     * @static
     * @default [&quot;info&quot;,&quot;warn&quot;,&quot;error&quot;,&quot;time&quot;,&quot;window&quot;]
     */

    /**
     * Array of sources.
     *
     * @property sources
     * @type String[]
     * @static
     * @default [&quot;global&quot;]
     */

    /**
     * Upper limit on size of internal stack.
     *
     * @property maxStackEntries
     * @type Number
     * @static
     * @default 2500
     */

    /////////////////////////////////////////////////////////////////////////////
    //
    // Private properties
    //
    /////////////////////////////////////////////////////////////////////////////
    /**
     * Internal property to track whether output to browser console is enabled.
     *
     * @property _browserConsoleEnabled
     * @type Boolean
     * @static
     * @default false
     * @private
     */

    /**
     * Array to hold all log messages.
     *
     * @property _stack
     * @type Array
     * @static
     * @private
     */
    /**
     * Static timestamp of Logger initialization.
     *
     * @property _startTime
     * @type Date
     * @static
     * @private
     */
    /**
     * Timestamp of last logged message.
     *
     * @property _lastTime
     * @type Date
     * @static
     * @private
     */
    /////////////////////////////////////////////////////////////////////////////
    //
    // Public methods
    //
    /////////////////////////////////////////////////////////////////////////////
    /**
     * Saves a log message to the stack and fires newLogEvent. If the log message is
     * assigned to an unknown category, creates a new category. If the log message is
     * from an unknown source, creates a new source.  If browser console is enabled,
     * outputs the log message to browser console.
     * Note: the LogReader adds the message, category, and source to the DOM
     * as HTML.
     *
     * @method log
     * @param sMsg {HTML} The log message.
     * @param sCategory {HTML} Category of log message, or null.
     * @param sSource {HTML} Source of LogWriter, or null if global.
     */
    YAHOO.widget.Logger.log = function(sMsg, sCategory, sSource) {
        if(this.loggerEnabled) {
            if(!sCategory) {
                sCategory = &quot;info&quot;; // default category
            }
            else {
                sCategory = sCategory.toLocaleLowerCase();
                if(this._isNewCategory(sCategory)) {
                    this._createNewCategory(sCategory);
                }
            }
            var sClass = &quot;global&quot;; // default source
            var sDetail = null;
            if(sSource) {
                var spaceIndex = sSource.indexOf(&quot; &quot;);
                if(spaceIndex &gt; 0) {
                    // Substring until first space
                    sClass = sSource.substring(0,spaceIndex);
                    // The rest of the source
                    sDetail = sSource.substring(spaceIndex,sSource.length);
                }
                else {
                    sClass = sSource;
                }
                if(this._isNewSource(sClass)) {
                    this._createNewSource(sClass);
                }
            }

            var timestamp = new Date();
            var logEntry = new YAHOO.widget.LogMsg({
                msg: sMsg,
                time: timestamp,
                category: sCategory,
                source: sClass,
                sourceDetail: sDetail
            });

            var stack = this._stack;
            var maxStackEntries = this.maxStackEntries;
            if(maxStackEntries &amp;&amp; !isNaN(maxStackEntries) &amp;&amp;
                (stack.length &gt;= maxStackEntries)) {
                stack.shift();
            }
            stack.push(logEntry);
            this.newLogEvent.fire(logEntry);

            if(this._browserConsoleEnabled) {
                this._printToBrowserConsole(logEntry);
            }
            return true;
        }
        else {
            return false;
        }
    };

    /**
     * Resets internal stack and startTime, enables Logger, and fires logResetEvent.
     *
     * @method reset
     */
    YAHOO.widget.Logger.reset = function() {
        this._stack = [];
        this._startTime = new Date().getTime();
        this.loggerEnabled = true;
        this.log(&quot;Logger reset&quot;);
        this.logResetEvent.fire();
    };

    /**
     * Public accessor to internal stack of log message objects.
     *
     * @method getStack
     * @return {Object[]} Array of log message objects.
     */
    YAHOO.widget.Logger.getStack = function() {
        return this._stack;
    };

    /**
     * Public accessor to internal start time.
     *
     * @method getStartTime
     * @return {Date} Internal date of when Logger singleton was initialized.
     */
    YAHOO.widget.Logger.getStartTime = function() {
        return this._startTime;
    };

    /**
     * Disables output to the browser's global console.log() function, which is used
     * by the Firebug extension to Firefox as well as Safari.
     *
     * @method disableBrowserConsole
     */
    YAHOO.widget.Logger.disableBrowserConsole = function() {
        YAHOO.log(&quot;Logger output to the function console.log() has been disabled.&quot;);
        this._browserConsoleEnabled = false;
    };

    /**
     * Enables output to the browser's global console.log() function, which is used
     * by the Firebug extension to Firefox as well as Safari.
     *
     * @method enableBrowserConsole
     */
    YAHOO.widget.Logger.enableBrowserConsole = function() {
        this._browserConsoleEnabled = true;
        YAHOO.log(&quot;Logger output to the function console.log() has been enabled.&quot;);
    };

    /**
     * Surpresses native JavaScript errors and outputs to console. By default,
     * Logger does not handle JavaScript window error events.
     * NB: Not all browsers support the window.onerror event.
     *
     * @method handleWindowErrors
     */
    YAHOO.widget.Logger.handleWindowErrors = function() {
        if(!YAHOO.widget.Logger._windowErrorsHandled) {
            // Save any previously defined handler to call
            if(window.error) {
                YAHOO.widget.Logger._origOnWindowError = window.onerror;
            }
            window.onerror = YAHOO.widget.Logger._onWindowError;
            YAHOO.widget.Logger._windowErrorsHandled = true;
            YAHOO.log(&quot;Logger handling of window.onerror has been enabled.&quot;);
        }
        else {
            YAHOO.log(&quot;Logger handling of window.onerror had already been enabled.&quot;);
        }
    };

    /**
     * Unsurpresses native JavaScript errors. By default,
     * Logger does not handle JavaScript window error events.
     * NB: Not all browsers support the window.onerror event.
     *
     * @method unhandleWindowErrors
     */
    YAHOO.widget.Logger.unhandleWindowErrors = function() {
        if(YAHOO.widget.Logger._windowErrorsHandled) {
            // Revert to any previously defined handler to call
            if(YAHOO.widget.Logger._origOnWindowError) {
                window.onerror = YAHOO.widget.Logger._origOnWindowError;
                YAHOO.widget.Logger._origOnWindowError = null;
            }
            else {
                window.onerror = null;
            }
            YAHOO.widget.Logger._windowErrorsHandled = false;
            YAHOO.log(&quot;Logger handling of window.onerror has been disabled.&quot;);
        }
        else {
            YAHOO.log(&quot;Logger handling of window.onerror had already been disabled.&quot;);
        }
    };
    
    /////////////////////////////////////////////////////////////////////////////
    //
    // Public events
    //
    /////////////////////////////////////////////////////////////////////////////

     /**
     * Fired when a new category has been created.
     *
     * @event categoryCreateEvent
     * @param sCategory {String} Category name.
     */
    YAHOO.widget.Logger.categoryCreateEvent =
        new YAHOO.util.CustomEvent(&quot;categoryCreate&quot;, this, true);

     /**
     * Fired when a new source has been named.
     *
     * @event sourceCreateEvent
     * @param sSource {String} Source name.
     */
    YAHOO.widget.Logger.sourceCreateEvent =
        new YAHOO.util.CustomEvent(&quot;sourceCreate&quot;, this, true);

     /**
     * Fired when a new log message has been created.
     *
     * @event newLogEvent
     * @param sMsg {String} Log message.
     */
    YAHOO.widget.Logger.newLogEvent = new YAHOO.util.CustomEvent(&quot;newLog&quot;, this, true);

    /**
     * Fired when the Logger has been reset has been created.
     *
     * @event logResetEvent
     */
    YAHOO.widget.Logger.logResetEvent = new YAHOO.util.CustomEvent(&quot;logReset&quot;, this, true);

    /////////////////////////////////////////////////////////////////////////////
    //
    // Private methods
    //
    /////////////////////////////////////////////////////////////////////////////

    /**
     * Creates a new category of log messages and fires categoryCreateEvent.
     *
     * @method _createNewCategory
     * @param sCategory {String} Category name.
     * @private
     */
    YAHOO.widget.Logger._createNewCategory = function(sCategory) {
        this.categories.push(sCategory);
        this.categoryCreateEvent.fire(sCategory);
    };

    /**
     * Checks to see if a category has already been created.
     *
     * @method _isNewCategory
     * @param sCategory {String} Category name.
     * @return {Boolean} Returns true if category is unknown, else returns false.
     * @private
     */
    YAHOO.widget.Logger._isNewCategory = function(sCategory) {
        for(var i=0; i &lt; this.categories.length; i++) {
            if(sCategory == this.categories[i]) {
                return false;
            }
        }
        return true;
    };

    /**
     * Creates a new source of log messages and fires sourceCreateEvent.
     *
     * @method _createNewSource
     * @param sSource {String} Source name.
     * @private
     */
    YAHOO.widget.Logger._createNewSource = function(sSource) {
        this.sources.push(sSource);
        this.sourceCreateEvent.fire(sSource);
    };

    /**
     * Checks to see if a source already exists.
     *
     * @method _isNewSource
     * @param sSource {String} Source name.
     * @return {Boolean} Returns true if source is unknown, else returns false.
     * @private
     */
    YAHOO.widget.Logger._isNewSource = function(sSource) {
        if(sSource) {
            for(var i=0; i &lt; this.sources.length; i++) {
                if(sSource == this.sources[i]) {
                    return false;
                }
            }
            return true;
        }
    };

    /**
     * Outputs a log message to global console.log() function.
     *
     * @method _printToBrowserConsole
     * @param oEntry {Object} Log entry object.
     * @private
     */
    YAHOO.widget.Logger._printToBrowserConsole = function(oEntry) {
        if ((window.console &amp;&amp; console.log) ||
            (window.opera &amp;&amp; opera.postError)) {
            var category = oEntry.category;
            var label = oEntry.category.substring(0,4).toUpperCase();

            var time = oEntry.time;
            var localTime;
            if (time.toLocaleTimeString) {
                localTime  = time.toLocaleTimeString();
            }
            else {
                localTime = time.toString();
            }

            var msecs = time.getTime();
            var elapsedTime = (YAHOO.widget.Logger._lastTime) ?
                (msecs - YAHOO.widget.Logger._lastTime) : 0;
            YAHOO.widget.Logger._lastTime = msecs;

            var output =
                localTime + &quot; (&quot; +
                elapsedTime + &quot;ms): &quot; +
                oEntry.source + &quot;: &quot;;

            if (window.console) {
                console.log(output, oEntry.msg);
            } else {
                opera.postError(output + oEntry.msg);
            }
        }
    };

    /////////////////////////////////////////////////////////////////////////////
    //
    // Private event handlers
    //
    /////////////////////////////////////////////////////////////////////////////

    /**
     * Handles logging of messages due to window error events.
     *
     * @method _onWindowError
     * @param sMsg {String} The error message.
     * @param sUrl {String} URL of the error.
     * @param sLine {String} Line number of the error.
     * @private
     */
    YAHOO.widget.Logger._onWindowError = function(sMsg,sUrl,sLine) {
        // Logger is not in scope of this event handler
        try {
            YAHOO.widget.Logger.log(sMsg+' ('+sUrl+', line '+sLine+')', &quot;window&quot;);
            if(YAHOO.widget.Logger._origOnWindowError) {
                YAHOO.widget.Logger._origOnWindowError();
            }
        }
        catch(e) {
            return false;
        }
    };

    /////////////////////////////////////////////////////////////////////////////
    //
    // First log
    //
    /////////////////////////////////////////////////////////////////////////////

    YAHOO.widget.Logger.log(&quot;Logger initialized&quot;);
}

/****************************************************************************/
/****************************************************************************/
/****************************************************************************/
(function () {
var Logger = YAHOO.widget.Logger,
    u      = YAHOO.util,
    Dom    = u.Dom,
    Event  = u.Event,
    d      = document;

function make(el,props) {
    el = d.createElement(el);
    if (props) {
        for (var p in props) {
            if (props.hasOwnProperty(p)) {
                el[p] = props[p];
            }
        }
    }
    return el;
}

/**
 * The LogReader class provides UI to read messages logged to YAHOO.widget.Logger.
 *
 * @class LogReader
 * @constructor
 * @param elContainer {HTMLElement} (optional) DOM element reference of an existing DIV.
 * @param elContainer {String} (optional) String ID of an existing DIV.
 * @param oConfigs {Object} (optional) Object literal of configuration params.
 */
function LogReader(elContainer, oConfigs) {
    this._sName = LogReader._index;
    LogReader._index++;
    
    this._init.apply(this,arguments);

    /**
     * Render the LogReader immediately upon instantiation.  If set to false,
     * you must call myLogReader.render() to generate the UI.
     * 
     * @property autoRender
     * @type {Boolean}
     * @default true
     */
    if (this.autoRender !== false) {
        this.render();
    }
}

/////////////////////////////////////////////////////////////////////////////
//
// Static member variables
//
/////////////////////////////////////////////////////////////////////////////
YAHOO.lang.augmentObject(LogReader, {
    /**
     * Internal class member to index multiple LogReader instances.
     *
     * @property _memberName
     * @static
     * @type Number
     * @default 0
     * @private
     */
    _index : 0,

    /**
     * Node template for the log entries
     * @property ENTRY_TEMPLATE
     * @static
     * @type {HTMLElement}
     * @default &lt;code&gt;pre&lt;/code&gt; element with class yui-log-entry
     */
    ENTRY_TEMPLATE : (function () {
        return make('pre',{ className: 'yui-log-entry' });
    })(),

    /**
     * Template used for innerHTML of verbose entry output.
     * @property VERBOSE_TEMPLATE
     * @static
     * @default &quot;&amp;lt;p&gt;&amp;lt;span class='{category}'&gt;{label}&amp;lt;/span&gt;{totalTime}ms (+{elapsedTime}) {localTime}:&amp;lt;/p&gt;&amp;lt;p&gt;{sourceAndDetail}&amp;lt;/p&gt;&amp;lt;p&gt;{message}&amp;lt;/p&gt;&quot;
     */
    VERBOSE_TEMPLATE : &quot;&lt;p&gt;&lt;span class='{category}'&gt;{label}&lt;/span&gt; {totalTime}ms (+{elapsedTime}) {localTime}:&lt;/p&gt;&lt;p&gt;{sourceAndDetail}&lt;/p&gt;&lt;p&gt;{message}&lt;/p&gt;&quot;,

    /**
     * Template used for innerHTML of compact entry output.
     * @property BASIC_TEMPLATE
     * @static
     * @default &quot;&amp;lt;p&gt;&amp;lt;span class='{category}'&gt;{label}&amp;lt;/span&gt;{totalTime}ms (+{elapsedTime}) {localTime}: {sourceAndDetail}: {message}&amp;lt;/p&gt;&quot;
     */
    BASIC_TEMPLATE : &quot;&lt;p&gt;&lt;span class='{category}'&gt;{label}&lt;/span&gt; {totalTime}ms (+{elapsedTime}) {localTime}: {sourceAndDetail}: {message}&lt;/p&gt;&quot;
});

/////////////////////////////////////////////////////////////////////////////
//
// Public member variables
//
/////////////////////////////////////////////////////////////////////////////

LogReader.prototype = {
    /**
     * Whether or not LogReader is enabled to output log messages.
     *
     * @property logReaderEnabled
     * @type Boolean
     * @default true
     */
    logReaderEnabled : true,

    /**
     * Public member to access CSS width of the LogReader container.
     *
     * @property width
     * @type String
     */
    width : null,

    /**
     * Public member to access CSS height of the LogReader container.
     *
     * @property height
     * @type String
     */
    height : null,

    /**
     * Public member to access CSS top position of the LogReader container.
     *
     * @property top
     * @type String
     */
    top : null,

    /**
     * Public member to access CSS left position of the LogReader container.
     *
     * @property left
     * @type String
     */
    left : null,

    /**
     * Public member to access CSS right position of the LogReader container.
     *
     * @property right
     * @type String
     */
    right : null,

    /**
     * Public member to access CSS bottom position of the LogReader container.
     *
     * @property bottom
     * @type String
     */
    bottom : null,

    /**
     * Public member to access CSS font size of the LogReader container.
     *
     * @property fontSize
     * @type String
     */
    fontSize : null,

    /**
     * Whether or not the footer UI is enabled for the LogReader.
     *
     * @property footerEnabled
     * @type Boolean
     * @default true
     */
    footerEnabled : true,

    /**
     * Whether or not output is verbose (more readable). Setting to true will make
     * output more compact (less readable).
     *
     * @property verboseOutput
     * @type Boolean
     * @default true
     */
    verboseOutput : true,

    /**
     * Custom output format for log messages.  Defaults to null, which falls
     * back to verboseOutput param deciding between LogReader.VERBOSE_TEMPLATE
     * and LogReader.BASIC_TEMPLATE.  Use bracketed place holders to mark where
     * message info should go.  Available place holder names include:
     * &lt;ul&gt;
     *  &lt;li&gt;category&lt;/li&gt;
     *  &lt;li&gt;label&lt;/li&gt;
     *  &lt;li&gt;sourceAndDetail&lt;/li&gt;
     *  &lt;li&gt;message&lt;/li&gt;
     *  &lt;li&gt;localTime&lt;/li&gt;
     *  &lt;li&gt;elapsedTime&lt;/li&gt;
     *  &lt;li&gt;totalTime&lt;/li&gt;
     * &lt;/ul&gt;
     *
     * @property entryFormat
     * @type String
     * @default null
     */
    entryFormat : null,

    /**
     * Whether or not newest message is printed on top.
     *
     * @property newestOnTop
     * @type Boolean
     */
    newestOnTop : true,

    /**
     * Output timeout buffer in milliseconds.
     *
     * @property outputBuffer
     * @type Number
     * @default 100
     */
    outputBuffer : 100,

    /**
     * Maximum number of messages a LogReader console will display.
     *
     * @property thresholdMax
     * @type Number
     * @default 500
     */
    thresholdMax : 500,

    /**
     * When a LogReader console reaches its thresholdMax, it will clear out messages
     * and print out the latest thresholdMin number of messages.
     *
     * @property thresholdMin
     * @type Number
     * @default 100
     */
    thresholdMin : 100,

    /**
     * True when LogReader is in a collapsed state, false otherwise.
     *
     * @property isCollapsed
     * @type Boolean
     * @default false
     */
    isCollapsed : false,

    /**
     * True when LogReader is in a paused state, false otherwise.
     *
     * @property isPaused
     * @type Boolean
     * @default false
     */
    isPaused : false,

    /**
     * Enables draggable LogReader if DragDrop Utility is present.
     *
     * @property draggable
     * @type Boolean
     * @default true
     */
    draggable : true,

    /////////////////////////////////////////////////////////////////////////////
    //
    // Public methods
    //
    /////////////////////////////////////////////////////////////////////////////

     /**
     * Public accessor to the unique name of the LogReader instance.
     *
     * @method toString
     * @return {String} Unique name of the LogReader instance.
     */
    toString : function() {
        return &quot;LogReader instance&quot; + this._sName;
    },
    /**
     * Pauses output of log messages. While paused, log messages are not lost, but
     * get saved to a buffer and then output upon resume of LogReader.
     *
     * @method pause
     */
    pause : function() {
        this.isPaused = true;
        this._timeout = null;
        this.logReaderEnabled = false;
        if (this._btnPause) {
            this._btnPause.value = &quot;Resume&quot;;
        }
    },

    /**
     * Resumes output of log messages, including outputting any log messages that
     * have been saved to buffer while paused.
     *
     * @method resume
     */
    resume : function() {
        this.isPaused = false;
        this.logReaderEnabled = true;
        this._printBuffer();
        if (this._btnPause) {
            this._btnPause.value = &quot;Pause&quot;;
        }
    },

    /**
     * Adds the UI to the DOM, attaches event listeners, and bootstraps initial
     * UI state.
     *
     * @method render
     */
    render : function () {
        if (this.rendered) {
            return;
        }

        this._initContainerEl();
        
        this._initHeaderEl();
        this._initConsoleEl();
        this._initFooterEl();

        this._initCategories();
        this._initSources();

        this._initDragDrop();

        // Subscribe to Logger custom events
        Logger.newLogEvent.subscribe(this._onNewLog, this);
        Logger.logResetEvent.subscribe(this._onReset, this);

        Logger.categoryCreateEvent.subscribe(this._onCategoryCreate, this);
        Logger.sourceCreateEvent.subscribe(this._onSourceCreate, this);

        this.rendered = true;

        this._filterLogs();
    },

    /**
     * Removes the UI from the DOM entirely and detaches all event listeners.
     * Implementers should note that Logger will still accumulate messages.
     *
     * @method destroy
     */
    destroy : function () {
        Event.purgeElement(this._elContainer,true);
        this._elContainer.innerHTML = '';
        this._elContainer.parentNode.removeChild(this._elContainer);

        this.rendered = false;
    },

    /**
     * Hides UI of LogReader. Logging functionality is not disrupted.
     *
     * @method hide
     */
    hide : function() {
        this._elContainer.style.display = &quot;none&quot;;
    },

    /**
     * Shows UI of LogReader. Logging functionality is not disrupted.
     *
     * @method show
     */
    show : function() {
        this._elContainer.style.display = &quot;block&quot;;
    },

    /**
     * Collapses UI of LogReader. Logging functionality is not disrupted.
     *
     * @method collapse
     */
    collapse : function() {
        this._elConsole.style.display = &quot;none&quot;;
        if(this._elFt) {
            this._elFt.style.display = &quot;none&quot;;
        }
        this._btnCollapse.value = &quot;Expand&quot;;
        this.isCollapsed = true;
    },

    /**
     * Expands UI of LogReader. Logging functionality is not disrupted.
     *
     * @method expand
     */
    expand : function() {
        this._elConsole.style.display = &quot;block&quot;;
        if(this._elFt) {
            this._elFt.style.display = &quot;block&quot;;
        }
        this._btnCollapse.value = &quot;Collapse&quot;;
        this.isCollapsed = false;
    },

    /**
     * Returns related checkbox element for given filter (i.e., category or source).
     *
     * @method getCheckbox
     * @param {String} Category or source name.
     * @return {Array} Array of all filter checkboxes.
     */
    getCheckbox : function(filter) {
        return this._filterCheckboxes[filter];
    },

    /**
     * Returns array of enabled categories.
     *
     * @method getCategories
     * @return {String[]} Array of enabled categories.
     */
    getCategories : function() {
        return this._categoryFilters;
    },

    /**
     * Shows log messages associated with given category.
     *
     * @method showCategory
     * @param {String} Category name.
     */
    showCategory : function(sCategory) {
        var filtersArray = this._categoryFilters;
        // Don't do anything if category is already enabled
        // Use Array.indexOf if available...
        if(filtersArray.indexOf) {
             if(filtersArray.indexOf(sCategory) &gt;  -1) {
                return;
            }
        }
        // ...or do it the old-fashioned way
        else {
            for(var i=0; i&lt;filtersArray.length; i++) {
               if(filtersArray[i] === sCategory){
                    return;
                }
            }
        }

        this._categoryFilters.push(sCategory);
        this._filterLogs();
        var elCheckbox = this.getCheckbox(sCategory);
        if(elCheckbox) {
            elCheckbox.checked = true;
        }
    },

    /**
     * Hides log messages associated with given category.
     *
     * @method hideCategory
     * @param {String} Category name.
     */
    hideCategory : function(sCategory) {
        var filtersArray = this._categoryFilters;
        for(var i=0; i&lt;filtersArray.length; i++) {
            if(sCategory == filtersArray[i]) {
                filtersArray.splice(i, 1);
                break;
            }
        }
        this._filterLogs();
        var elCheckbox = this.getCheckbox(sCategory);
        if(elCheckbox) {
            elCheckbox.checked = false;
        }
    },

    /**
     * Returns array of enabled sources.
     *
     * @method getSources
     * @return {Array} Array of enabled sources.
     */
    getSources : function() {
        return this._sourceFilters;
    },

    /**
     * Shows log messages associated with given source.
     *
     * @method showSource
     * @param {String} Source name.
     */
    showSource : function(sSource) {
        var filtersArray = this._sourceFilters;
        // Don't do anything if category is already enabled
        // Use Array.indexOf if available...
        if(filtersArray.indexOf) {
             if(filtersArray.indexOf(sSource) &gt;  -1) {
                return;
            }
        }
        // ...or do it the old-fashioned way
        else {
            for(var i=0; i&lt;filtersArray.length; i++) {
               if(sSource == filtersArray[i]){
                    return;
                }
            }
        }
        filtersArray.push(sSource);
        this._filterLogs();
        var elCheckbox = this.getCheckbox(sSource);
        if(elCheckbox) {
            elCheckbox.checked = true;
        }
    },

    /**
     * Hides log messages associated with given source.
     *
     * @method hideSource
     * @param {String} Source name.
     */
    hideSource : function(sSource) {
        var filtersArray = this._sourceFilters;
        for(var i=0; i&lt;filtersArray.length; i++) {
            if(sSource == filtersArray[i]) {
                filtersArray.splice(i, 1);
                break;
            }
        }
        this._filterLogs();
        var elCheckbox = this.getCheckbox(sSource);
        if(elCheckbox) {
            elCheckbox.checked = false;
        }
    },

    /**
     * Does not delete any log messages, but clears all printed log messages from
     * the console. Log messages will be printed out again if user re-filters. The
     * static method YAHOO.widget.Logger.reset() should be called in order to
     * actually delete log messages.
     *
     * @method clearConsole
     */
    clearConsole : function() {
        // Clear the buffer of any pending messages
        this._timeout = null;
        this._buffer = [];
        this._consoleMsgCount = 0;

        var elConsole = this._elConsole;
        elConsole.innerHTML = '';
    },

    /**
     * Updates title to given string.
     *
     * @method setTitle
     * @param sTitle {String} New title.
     */
    setTitle : function(sTitle) {
        this._title.innerHTML = this.html2Text(sTitle);
    },

    /**
     * Gets timestamp of the last log.
     *
     * @method getLastTime
     * @return {Date} Timestamp of the last log.
     */
    getLastTime : function() {
        return this._lastTime;
    },

    formatMsg : function (entry) {
        var entryFormat = this.entryFormat || (this.verboseOutput ?
                          LogReader.VERBOSE_TEMPLATE : LogReader.BASIC_TEMPLATE),
            info        = {
                category : entry.category,

                // Label for color-coded display
                label : entry.category.substring(0,4).toUpperCase(),

                sourceAndDetail : entry.sourceDetail ?
                                  entry.source + &quot; &quot; + entry.sourceDetail :
                                  entry.source,

                // Escape HTML entities in the log message itself for output
                // to console
                message : this.html2Text(entry.msg || entry.message || '')
            };

        // Add time info
        if (entry.time &amp;&amp; entry.time.getTime) {
            info.localTime = entry.time.toLocaleTimeString ?
                             entry.time.toLocaleTimeString() :
                             entry.time.toString();

            // Calculate the elapsed time to be from the last item that
            // passed through the filter, not the absolute previous item
            // in the stack
            info.elapsedTime = entry.time.getTime() - this.getLastTime();

            info.totalTime = entry.time.getTime() - Logger.getStartTime();
        }

        var msg = LogReader.ENTRY_TEMPLATE.cloneNode(true);
        if (this.verboseOutput) {
            msg.className += ' yui-log-verbose';
        }

        // Bug 2061169: Workaround for YAHOO.lang.substitute()
        msg.innerHTML = entryFormat.replace(/\{(\w+)\}/g,
            function (x, placeholder) {
                return (placeholder in info) ? info[placeholder] : '';
            });

        return msg;
    },

    /**
     * Converts input chars &quot;&lt;&quot;, &quot;&gt;&quot;, and &quot;&amp;&quot; to HTML entities.
     *
     * @method html2Text
     * @param sHtml {String} String to convert.
     * @private
     */
    html2Text : function(sHtml) {
        if(sHtml) {
            sHtml += &quot;&quot;;
            return sHtml.replace(/&amp;/g, &quot;&amp;#38;&quot;).
                         replace(/&lt;/g, &quot;&amp;#60;&quot;).
                         replace(/&gt;/g, &quot;&amp;#62;&quot;);
        }
        return &quot;&quot;;
    },

/////////////////////////////////////////////////////////////////////////////
//
// Private member variables
//
/////////////////////////////////////////////////////////////////////////////

    /**
     * Name of LogReader instance.
     *
     * @property _sName
     * @type String
     * @private
     */
    _sName : null,

    //TODO: remove
    /**
     * A class member shared by all LogReaders if a container needs to be
     * created during instantiation. Will be null if a container element never needs to
     * be created on the fly, such as when the implementer passes in their own element.
     *
     * @property _elDefaultContainer
     * @type HTMLElement
     * @private
     */
    //YAHOO.widget.LogReader._elDefaultContainer = null;

    /**
     * Buffer of log message objects for batch output.
     *
     * @property _buffer
     * @type Object[]
     * @private
     */
    _buffer : null,

    /**
     * Number of log messages output to console.
     *
     * @property _consoleMsgCount
     * @type Number
     * @default 0
     * @private
     */
    _consoleMsgCount : 0,

    /**
     * Date of last output log message.
     *
     * @property _lastTime
     * @type Date
     * @private
     */
    _lastTime : null,

    /**
     * Batched output timeout ID.
     *
     * @property _timeout
     * @type Number
     * @private
     */
    _timeout : null,

    /**
     * Hash of filters and their related checkbox elements.
     *
     * @property _filterCheckboxes
     * @type Object
     * @private
     */
    _filterCheckboxes : null,

    /**
     * Array of filters for log message categories.
     *
     * @property _categoryFilters
     * @type String[]
     * @private
     */
    _categoryFilters : null,

    /**
     * Array of filters for log message sources.
     *
     * @property _sourceFilters
     * @type String[]
     * @private
     */
    _sourceFilters : null,

    /**
     * LogReader container element.
     *
     * @property _elContainer
     * @type HTMLElement
     * @private
     */
    _elContainer : null,

    /**
     * LogReader header element.
     *
     * @property _elHd
     * @type HTMLElement
     * @private
     */
    _elHd : null,

    /**
     * LogReader collapse element.
     *
     * @property _elCollapse
     * @type HTMLElement
     * @private
     */
    _elCollapse : null,

    /**
     * LogReader collapse button element.
     *
     * @property _btnCollapse
     * @type HTMLElement
     * @private
     */
    _btnCollapse : null,

    /**
     * LogReader title header element.
     *
     * @property _title
     * @type HTMLElement
     * @private
     */
    _title : null,

    /**
     * LogReader console element.
     *
     * @property _elConsole
     * @type HTMLElement
     * @private
     */
    _elConsole : null,

    /**
     * LogReader footer element.
     *
     * @property _elFt
     * @type HTMLElement
     * @private
     */
    _elFt : null,

    /**
     * LogReader buttons container element.
     *
     * @property _elBtns
     * @type HTMLElement
     * @private
     */
    _elBtns : null,

    /**
     * Container element for LogReader category filter checkboxes.
     *
     * @property _elCategoryFilters
     * @type HTMLElement
     * @private
     */
    _elCategoryFilters : null,

    /**
     * Container element for LogReader source filter checkboxes.
     *
     * @property _elSourceFilters
     * @type HTMLElement
     * @private
     */
    _elSourceFilters : null,

    /**
     * LogReader pause button element.
     *
     * @property _btnPause
     * @type HTMLElement
     * @private
     */
    _btnPause : null,

    /**
     * Clear button element.
     *
     * @property _btnClear
     * @type HTMLElement
     * @private
     */
    _btnClear : null,

    /////////////////////////////////////////////////////////////////////////////
    //
    // Private methods
    //
    /////////////////////////////////////////////////////////////////////////////

    /**
     * Initializes the instance's message buffer, start time, etc
     *
     * @method _init
     * @param container {String|HTMLElement} (optional) the render target
     * @param config {Object} (optional) instance configuration
     * @protected
     */
    _init : function (container, config) {
        // Internal vars
        this._buffer = []; // output buffer
        this._filterCheckboxes = {}; // pointers to checkboxes
        this._lastTime = Logger.getStartTime(); // timestamp of last log message to console

        // Parse config vars here
        if (config &amp;&amp; (config.constructor == Object)) {
            for(var param in config) {
                if (config.hasOwnProperty(param)) {
                    this[param] = config[param];
                }
            }
        }

        this._elContainer = Dom.get(container);

        YAHOO.log(&quot;LogReader initialized&quot;, null, this.toString());
    },

    /**
     * Initializes the primary container element.
     *
     * @method _initContainerEl
     * @private
     */
    _initContainerEl : function() {

        // Default the container if unset or not a div
        if(!this._elContainer || !/div$/i.test(this._elContainer.tagName)) {
            this._elContainer = d.body.insertBefore(make(&quot;div&quot;),d.body.firstChild);
            // Only position absolutely if an in-DOM element is not supplied
            Dom.addClass(this._elContainer,&quot;yui-log-container&quot;);
        }

        Dom.addClass(this._elContainer,&quot;yui-log&quot;);

        // If implementer has provided container values, trust and set those
        var style = this._elContainer.style,
            styleProps = ['width','right','top','fontSize'],
            prop,i;

        for (i = styleProps.length - 1; i &gt;= 0; --i) {
            prop = styleProps[i];
            if (this[prop]){ 
                style[prop] = this[prop];
            }
        }

        if(this.left) {
            style.left  = this.left;
            style.right = &quot;auto&quot;;
        }
        if(this.bottom) {
            style.bottom = this.bottom;
            style.top    = &quot;auto&quot;;
        }

        // Opera needs a little prodding to reflow sometimes
        if (YAHOO.env.ua.opera) {
            d.body.style += '';
        }

    },

    /**
     * Initializes the header element.
     *
     * @method _initHeaderEl
     * @private
     */
    _initHeaderEl : function() {
        // Destroy header if present
        if(this._elHd) {
            // Unhook DOM events
            Event.purgeElement(this._elHd, true);

            // Remove DOM elements
            this._elHd.innerHTML = &quot;&quot;;
        }
        
        // Create header
        // TODO: refactor this into an innerHTML
        this._elHd = make(&quot;div&quot;,{
            className: &quot;yui-log-hd&quot;
        });
        Dom.generateId(this._elHd, 'yui-log-hd' + this._sName);

        this._elCollapse = make(&quot;div&quot;,{ className: 'yui-log-btns' });

        this._btnCollapse = make(&quot;input&quot;,{
            type: 'button',
            className: 'yui-log-button',
            value: 'Collapse'
        });
        Event.on(this._btnCollapse,'click',this._onClickCollapseBtn,this);


        this._title = make(&quot;h4&quot;,{ innerHTML : &quot;Logger Console&quot; });

        this._elCollapse.appendChild(this._btnCollapse);
        this._elHd.appendChild(this._elCollapse);
        this._elHd.appendChild(this._title);
        this._elContainer.appendChild(this._elHd);
    },

    /**
     * Initializes the console element.
     *
     * @method _initConsoleEl
     * @private
     */
    _initConsoleEl : function() {
        // Destroy console
        if(this._elConsole) {
            // Unhook DOM events
            Event.purgeElement(this._elConsole, true);

            // Remove DOM elements
            this._elConsole.innerHTML = &quot;&quot;;
        }

        // Ceate console
        this._elConsole = make(&quot;div&quot;, { className: &quot;yui-log-bd&quot; });

        // If implementer has provided console, trust and set those
        if(this.height) {
            this._elConsole.style.height = this.height;
        }

        this._elContainer.appendChild(this._elConsole);
    },

    /**
     * Initializes the footer element.
     *
     * @method _initFooterEl
     * @private
     */
    _initFooterEl : function() {
        // Don't create footer elements if footer is disabled
        if(this.footerEnabled) {
            // Destroy console
            if(this._elFt) {
                // Unhook DOM events
                Event.purgeElement(this._elFt, true);

                // Remove DOM elements
                this._elFt.innerHTML = &quot;&quot;;
            }

            // TODO: use innerHTML
            this._elFt = make(&quot;div&quot;,{ className: &quot;yui-log-ft&quot; });
            this._elBtns = make(&quot;div&quot;, { className: &quot;yui-log-btns&quot; });
            this._btnPause = make(&quot;input&quot;, {
                type: &quot;button&quot;,
                className: &quot;yui-log-button&quot;,
                value: &quot;Pause&quot;
            });

            Event.on(this._btnPause,'click',this._onClickPauseBtn,this);

            this._btnClear = make(&quot;input&quot;, {
                type: &quot;button&quot;,
                className: &quot;yui-log-button&quot;,
                value: &quot;Clear&quot;
            });

            Event.on(this._btnClear,'click',this._onClickClearBtn,this);

            this._elCategoryFilters = make(&quot;div&quot;, { className: &quot;yui-log-categoryfilters&quot; });
            this._elSourceFilters = make(&quot;div&quot;, { className: &quot;yui-log-sourcefilters&quot; });

            this._elBtns.appendChild(this._btnPause);
            this._elBtns.appendChild(this._btnClear);
            this._elFt.appendChild(this._elBtns);
            this._elFt.appendChild(this._elCategoryFilters);
            this._elFt.appendChild(this._elSourceFilters);
            this._elContainer.appendChild(this._elFt);
        }
    },

    /**
     * Initializes Drag and Drop on the header element.
     *
     * @method _initDragDrop
     * @private
     */
    _initDragDrop : function() {
        // If Drag and Drop utility is available...
        // ...and draggable is true...
        // ...then make the header draggable
        if(u.DD &amp;&amp; this.draggable &amp;&amp; this._elHd) {
            var ylog_dd = new u.DD(this._elContainer);
            ylog_dd.setHandleElId(this._elHd.id);
            //TODO: use class name
            this._elHd.style.cursor = &quot;move&quot;;
        }
    },

    /**
     * Initializes category filters.
     *
     * @method _initCategories
     * @private
     */
    _initCategories : function() {
        // Initialize category filters
        this._categoryFilters = [];
        var aInitialCategories = Logger.categories;

        for(var j=0; j &lt; aInitialCategories.length; j++) {
            var sCategory = aInitialCategories[j];

            // Add category to the internal array of filters
            this._categoryFilters.push(sCategory);

            // Add checkbox element if UI is enabled
            if(this._elCategoryFilters) {
                this._createCategoryCheckbox(sCategory);
            }
        }
    },

    /**
     * Initializes source filters.
     *
     * @method _initSources
     * @private
     */
    _initSources : function() {
        // Initialize source filters
        this._sourceFilters = [];
        var aInitialSources = Logger.sources;

        for(var j=0; j &lt; aInitialSources.length; j++) {
            var sSource = aInitialSources[j];

            // Add source to the internal array of filters
            this._sourceFilters.push(sSource);

            // Add checkbox element if UI is enabled
            if(this._elSourceFilters) {
                this._createSourceCheckbox(sSource);
            }
        }
    },

    /**
     * Creates the UI for a category filter in the LogReader footer element.
     *
     * @method _createCategoryCheckbox
     * @param sCategory {String} Category name.
     * @private
     */
    _createCategoryCheckbox : function(sCategory) {
        if(this._elFt) {
            var filter = make(&quot;span&quot;,{ className: &quot;yui-log-filtergrp&quot; }),
                checkid = Dom.generateId(null, &quot;yui-log-filter-&quot; + sCategory + this._sName),
                check  = make(&quot;input&quot;, {
                    id: checkid,
                    className: &quot;yui-log-filter-&quot; + sCategory,
                    type: &quot;checkbox&quot;,
                    category: sCategory
                }),
                label  = make(&quot;label&quot;, {
                    htmlFor: checkid,
                    className: sCategory,
                    innerHTML: sCategory
                });
            

            // Subscribe to the click event
            Event.on(check,'click',this._onCheckCategory,this);

            this._filterCheckboxes[sCategory] = check;

            // Append el at the end so IE 5.5 can set &quot;type&quot; attribute
            // and THEN set checked property
            filter.appendChild(check);
            filter.appendChild(label);
            this._elCategoryFilters.appendChild(filter);
            check.checked = true;
        }
    },

    /**
     * Creates a checkbox in the LogReader footer element to filter by source.
     *
     * @method _createSourceCheckbox
     * @param sSource {String} Source name.
     * @private
     */
    _createSourceCheckbox : function(sSource) {
        if(this._elFt) {
            var filter = make(&quot;span&quot;,{ className: &quot;yui-log-filtergrp&quot; }),
                checkid = Dom.generateId(null, &quot;yui-log-filter-&quot; + sSource + this._sName),
                check  = make(&quot;input&quot;, {
                    id: checkid,
                    className: &quot;yui-log-filter-&quot; + sSource,
                    type: &quot;checkbox&quot;,
                    source: sSource
                }),
                label  = make(&quot;label&quot;, {
                    htmlFor: checkid,
                    className: sSource,
                    innerHTML: sSource
                });
            

            // Subscribe to the click event
            Event.on(check,'click',this._onCheckSource,this);

            this._filterCheckboxes[sSource] = check;

            // Append el at the end so IE 5.5 can set &quot;type&quot; attribute
            // and THEN set checked property
            filter.appendChild(check);
            filter.appendChild(label);
            this._elSourceFilters.appendChild(filter);
            check.checked = true;
        }
    },

    /**
     * Reprints all log messages in the stack through filters.
     *
     * @method _filterLogs
     * @private
     */
    _filterLogs : function() {
        // Reprint stack with new filters
        if (this._elConsole !== null) {
            this.clearConsole();
            this._printToConsole(Logger.getStack());
        }
    },

    /**
     * Sends buffer of log messages to output and clears buffer.
     *
     * @method _printBuffer
     * @private
     */
    _printBuffer : function() {
        this._timeout = null;

        if(this._elConsole !== null) {
            var thresholdMax = this.thresholdMax;
            thresholdMax = (thresholdMax &amp;&amp; !isNaN(thresholdMax)) ? thresholdMax : 500;
            if(this._consoleMsgCount &lt; thresholdMax) {
                var entries = [];
                for (var i=0; i&lt;this._buffer.length; i++) {
                    entries[i] = this._buffer[i];
                }
                this._buffer = [];
                this._printToConsole(entries);
            }
            else {
                this._filterLogs();
            }
            
            if(!this.newestOnTop) {
                this._elConsole.scrollTop = this._elConsole.scrollHeight;
            }
        }
    },

    /**
     * Cycles through an array of log messages, and outputs each one to the console
     * if its category has not been filtered out.
     *
     * @method _printToConsole
     * @param aEntries {Object[]} Array of LogMsg objects to output to console.
     * @private
     */
    _printToConsole : function(aEntries) {
        // Manage the number of messages displayed in the console
        var entriesLen         = aEntries.length,
            df                 = d.createDocumentFragment(),
            msgHTML            = [],
            thresholdMin       = this.thresholdMin,
            sourceFiltersLen   = this._sourceFilters.length,
            categoryFiltersLen = this._categoryFilters.length,
            entriesStartIndex,
            i, j, msg, before;

        if(isNaN(thresholdMin) || (thresholdMin &gt; this.thresholdMax)) {
            thresholdMin = 0;
        }
        entriesStartIndex = (entriesLen &gt; thresholdMin) ? (entriesLen - thresholdMin) : 0;
        
        // Iterate through all log entries 
        for(i=entriesStartIndex; i&lt;entriesLen; i++) {
            // Print only the ones that filter through
            var okToPrint = false,
                okToFilterCats = false,
                entry = aEntries[i],
                source = entry.source,
                category = entry.category;

            for(j=0; j&lt;sourceFiltersLen; j++) {
                if(source == this._sourceFilters[j]) {
                    okToFilterCats = true;
                    break;
                }
            }
            if(okToFilterCats) {
                for(j=0; j&lt;categoryFiltersLen; j++) {
                    if(category == this._categoryFilters[j]) {
                        okToPrint = true;
                        break;
                    }
                }
            }
            if(okToPrint) {
                // Start from 0ms elapsed time
                if (this._consoleMsgCount === 0) {
                    this._lastTime = entry.time.getTime();
                }

                msg = this.formatMsg(entry);
                if (typeof msg === 'string') {
                    msgHTML[msgHTML.length] = msg;
                } else {
                    df.insertBefore(msg, this.newestOnTop ?
                        df.firstChild || null : null);
                }
                this._consoleMsgCount++;
                this._lastTime = entry.time.getTime();
            }
        }

        if (msgHTML.length) {
            msgHTML.splice(0,0,this._elConsole.innerHTML);
            this._elConsole.innerHTML = this.newestOnTop ?
                                            msgHTML.reverse().join('') :
                                            msgHTML.join('');
        } else if (df.firstChild) {
            this._elConsole.insertBefore(df, this.newestOnTop ?
                        this._elConsole.firstChild || null : null);
        }
    },

/////////////////////////////////////////////////////////////////////////////
//
// Private event handlers
//
/////////////////////////////////////////////////////////////////////////////

    /**
     * Handles Logger's categoryCreateEvent.
     *
     * @method _onCategoryCreate
     * @param sType {String} The event.
     * @param aArgs {Object[]} Data passed from event firer.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onCategoryCreate : function(sType, aArgs, oSelf) {
        var category = aArgs[0];
        
        // Add category to the internal array of filters
        oSelf._categoryFilters.push(category);

        if(oSelf._elFt) {
            oSelf._createCategoryCheckbox(category);
        }
    },

    /**
     * Handles Logger's sourceCreateEvent.
     *
     * @method _onSourceCreate
     * @param sType {String} The event.
     * @param aArgs {Object[]} Data passed from event firer.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onSourceCreate : function(sType, aArgs, oSelf) {
        var source = aArgs[0];
        
        // Add source to the internal array of filters
        oSelf._sourceFilters.push(source);

        if(oSelf._elFt) {
            oSelf._createSourceCheckbox(source);
        }
    },

    /**
     * Handles check events on the category filter checkboxes.
     *
     * @method _onCheckCategory
     * @param v {HTMLEvent} The click event.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onCheckCategory : function(v, oSelf) {
        var category = this.category;
        if(!this.checked) {
            oSelf.hideCategory(category);
        }
        else {
            oSelf.showCategory(category);
        }
    },

    /**
     * Handles check events on the category filter checkboxes.
     *
     * @method _onCheckSource
     * @param v {HTMLEvent} The click event.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onCheckSource : function(v, oSelf) {
        var source = this.source;
        if(!this.checked) {
            oSelf.hideSource(source);
        }
        else {
            oSelf.showSource(source);
        }
    },

    /**
     * Handles click events on the collapse button.
     *
     * @method _onClickCollapseBtn
     * @param v {HTMLEvent} The click event.
     * @param oSelf {Object} The LogReader instance
     * @private
     */
    _onClickCollapseBtn : function(v, oSelf) {
        if(!oSelf.isCollapsed) {
            oSelf.collapse();
        }
        else {
            oSelf.expand();
        }
    },

    /**
     * Handles click events on the pause button.
     *
     * @method _onClickPauseBtn
     * @param v {HTMLEvent} The click event.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onClickPauseBtn : function(v, oSelf) {
        if(!oSelf.isPaused) {
            oSelf.pause();
        }
        else {
            oSelf.resume();
        }
    },

    /**
     * Handles click events on the clear button.
     *
     * @method _onClickClearBtn
     * @param v {HTMLEvent} The click event.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onClickClearBtn : function(v, oSelf) {
        oSelf.clearConsole();
    },

    /**
     * Handles Logger's newLogEvent.
     *
     * @method _onNewLog
     * @param sType {String} The event.
     * @param aArgs {Object[]} Data passed from event firer.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onNewLog : function(sType, aArgs, oSelf) {
        var logEntry = aArgs[0];
        oSelf._buffer.push(logEntry);

        if (oSelf.logReaderEnabled === true &amp;&amp; oSelf._timeout === null) {
            oSelf._timeout = setTimeout(function(){oSelf._printBuffer();}, oSelf.outputBuffer);
        }
    },

    /**
     * Handles Logger's resetEvent.
     *
     * @method _onReset
     * @param sType {String} The event.
     * @param aArgs {Object[]} Data passed from event firer.
     * @param oSelf {Object} The LogReader instance.
     * @private
     */
    _onReset : function(sType, aArgs, oSelf) {
        oSelf._filterLogs();
    }
};

YAHOO.widget.LogReader = LogReader;

})();
YAHOO.register(&quot;logger&quot;, YAHOO.widget.Logger, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * The dom module provides helper methods for manipulating Dom elements.
 * @module dom
 *
 */

(function() {
    // for use with generateId (global to save state if Dom is overwritten)
    YAHOO.env._id_counter = YAHOO.env._id_counter || 0;

    // internal shorthand
    var Y = YAHOO.util,
        lang = YAHOO.lang,
        UA = YAHOO.env.ua,
        trim = YAHOO.lang.trim,
        propertyCache = {}, // for faster hyphen converts
        reCache = {}, // cache className regexes
        RE_TABLE = /^t(?:able|d|h)$/i, // for _calcBorders
        RE_COLOR = /color$/i,

        // DOM aliases 
        document = window.document,     
        documentElement = document.documentElement,

        // string constants
        OWNER_DOCUMENT = 'ownerDocument',
        DEFAULT_VIEW = 'defaultView',
        DOCUMENT_ELEMENT = 'documentElement',
        COMPAT_MODE = 'compatMode',
        OFFSET_LEFT = 'offsetLeft',
        OFFSET_TOP = 'offsetTop',
        OFFSET_PARENT = 'offsetParent',
        PARENT_NODE = 'parentNode',
        NODE_TYPE = 'nodeType',
        TAG_NAME = 'tagName',
        SCROLL_LEFT = 'scrollLeft',
        SCROLL_TOP = 'scrollTop',
        GET_BOUNDING_CLIENT_RECT = 'getBoundingClientRect',
        GET_COMPUTED_STYLE = 'getComputedStyle',
        CURRENT_STYLE = 'currentStyle',
        CSS1_COMPAT = 'CSS1Compat',
        _BACK_COMPAT = 'BackCompat',
        _CLASS = 'class', // underscore due to reserved word
        CLASS_NAME = 'className',
        EMPTY = '',
        SPACE = ' ',
        C_START = '(?:^|\\s)',
        C_END = '(?= |$)',
        G = 'g',
        POSITION = 'position',
        FIXED = 'fixed',
        RELATIVE = 'relative',
        LEFT = 'left',
        TOP = 'top',
        MEDIUM = 'medium',
        BORDER_LEFT_WIDTH = 'borderLeftWidth',
        BORDER_TOP_WIDTH = 'borderTopWidth',
    
    // brower detection
        isOpera = UA.opera,
        isSafari = UA.webkit, 
        isGecko = UA.gecko, 
        isIE = UA.ie; 
    
    /**
     * Provides helper methods for DOM elements.
     * @namespace YAHOO.util
     * @class Dom
     * @requires yahoo, event
     */
    Y.Dom = {
        CUSTOM_ATTRIBUTES: (!documentElement.hasAttribute) ? { // IE &lt; 8
            'for': 'htmlFor',
            'class': CLASS_NAME
        } : { // w3c
            'htmlFor': 'for',
            'className': _CLASS
        },

        DOT_ATTRIBUTES: {
            checked: true 
        },

        /**
         * Returns an HTMLElement reference.
         * @method get
         * @param {String | HTMLElement |Array} el Accepts a string to use as an ID for getting a DOM reference, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @return {HTMLElement | Array} A DOM reference to an HTML element or an array of HTMLElements.
         */
        get: function(el) {
            var id, nodes, c, i, len, attr, ret = null;

            if (el) {
                if (typeof el == 'string' || typeof el == 'number') { // id
                    id = el + '';
                    el = document.getElementById(el);
                    attr = (el) ? el.attributes : null;
                    if (el &amp;&amp; attr &amp;&amp; attr.id &amp;&amp; attr.id.value === id) { // IE: avoid false match on &quot;name&quot; attribute
                        return el;
                    } else if (el &amp;&amp; document.all) { // filter by name
                        el = null;
                        nodes = document.all[id];
                        if (nodes &amp;&amp; nodes.length) {
                            for (i = 0, len = nodes.length; i &lt; len; ++i) {
                                if (nodes[i].id === id) {
                                    return nodes[i];
                                }
                            }
                        }
                    }
                } else if (Y.Element &amp;&amp; el instanceof Y.Element) {
                    el = el.get('element');
                } else if (!el.nodeType &amp;&amp; 'length' in el) { // array-like 
                    c = [];
                    for (i = 0, len = el.length; i &lt; len; ++i) {
                        c[c.length] = Y.Dom.get(el[i]);
                    }
                    
                    el = c;
                }

                ret = el;
            }

            return ret;
        },
    
        getComputedStyle: function(el, property) {
            if (window[GET_COMPUTED_STYLE]) {
                return el[OWNER_DOCUMENT][DEFAULT_VIEW][GET_COMPUTED_STYLE](el, null)[property];
            } else if (el[CURRENT_STYLE]) {
                return Y.Dom.IE_ComputedStyle.get(el, property);
            }
        },

        /**
         * Normalizes currentStyle and ComputedStyle.
         * @method getStyle
         * @param {String | HTMLElement |Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @param {String} property The style property whose value is returned.
         * @return {String | Array} The current value of the style property for the element(s).
         */
        getStyle: function(el, property) {
            return Y.Dom.batch(el, Y.Dom._getStyle, property);
        },

        // branching at load instead of runtime
        _getStyle: function() {
            if (window[GET_COMPUTED_STYLE]) { // W3C DOM method
                return function(el, property) {
                    property = (property === 'float') ? property = 'cssFloat' :
                            Y.Dom._toCamel(property);

                    var value = el.style[property],
                        computed;
                    
                    if (!value) {
                        computed = el[OWNER_DOCUMENT][DEFAULT_VIEW][GET_COMPUTED_STYLE](el, null);
                        if (computed) { // test computed before touching for safari
                            value = computed[property];
                        }
                    }
                    
                    return value;
                };
            } else if (documentElement[CURRENT_STYLE]) {
                return function(el, property) {                         
                    var value;

                    switch(property) {
                        case 'opacity' :// IE opacity uses filter
                            value = 100;
                            try { // will error if no DXImageTransform
                                value = el.filters['DXImageTransform.Microsoft.Alpha'].opacity;

                            } catch(e) {
                                try { // make sure its in the document
                                    value = el.filters('alpha').opacity;
                                } catch(err) {
                                    YAHOO.log('getStyle: IE filter failed',
                                            'error', 'Dom');
                                }
                            }
                            return value / 100;
                        case 'float': // fix reserved word
                            property = 'styleFloat'; // fall through
                        default: 
                            property = Y.Dom._toCamel(property);
                            value = el[CURRENT_STYLE] ? el[CURRENT_STYLE][property] : null;
                            return ( el.style[property] || value );
                    }
                };
            }
        }(),
    
        /**
         * Wrapper for setting style properties of HTMLElements.  Normalizes &quot;opacity&quot; across modern browsers.
         * @method setStyle
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @param {String} property The style property to be set.
         * @param {String} val The value to apply to the given property.
         */
        setStyle: function(el, property, val) {
            Y.Dom.batch(el, Y.Dom._setStyle, { prop: property, val: val });
        },

        _setStyle: function() {
            if (!window.getComputedStyle &amp;&amp; document.documentElement.currentStyle) {
                return function(el, args) {
                    var property = Y.Dom._toCamel(args.prop),
                        val = args.val;

                    if (el) {
                        switch (property) {
                            case 'opacity':
                                // remove filter if unsetting or full opacity
                                if (val === '' || val === null || val === 1) {
                                    el.style.removeAttribute('filter');
                                } else if ( lang.isString(el.style.filter) ) { // in case not appended
                                    el.style.filter = 'alpha(opacity=' + val * 100 + ')';
                                    
                                    if (!el[CURRENT_STYLE] || !el[CURRENT_STYLE].hasLayout) {
                                        el.style.zoom = 1; // when no layout or cant tell
                                    }
                                }
                                break;
                            case 'float':
                                property = 'styleFloat';
                            default:
                            el.style[property] = val;
                        }
                    } else {
                        YAHOO.log('element ' + el + ' is undefined', 'error', 'Dom');
                    }
                };
            } else {
                return function(el, args) {
                    var property = Y.Dom._toCamel(args.prop),
                        val = args.val;
                    if (el) {
                        if (property == 'float') {
                            property = 'cssFloat';
                        }
                        el.style[property] = val;
                    } else {
                        YAHOO.log('element ' + el + ' is undefined', 'error', 'Dom');
                    }
                };
            }

        }(),
        
        /**
         * Gets the current position of an element based on page coordinates. 
         * Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method getXY
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM
         * reference, or an Array of IDs and/or HTMLElements
         * @return {Array} The XY position of the element(s)
         */
        getXY: function(el) {
            return Y.Dom.batch(el, Y.Dom._getXY);
        },

        _canPosition: function(el) {
            return ( Y.Dom._getStyle(el, 'display') !== 'none' &amp;&amp; Y.Dom._inDoc(el) );
        },

        _getXY: function(node) {
            var scrollLeft, scrollTop, box, doc,
                clientTop, clientLeft,
                round = Math.round, // TODO: round?
                xy = false;

            if (Y.Dom._canPosition(node)) {
                box = node[GET_BOUNDING_CLIENT_RECT]();
                doc = node[OWNER_DOCUMENT];
                scrollLeft = Y.Dom.getDocumentScrollLeft(doc);
                scrollTop = Y.Dom.getDocumentScrollTop(doc);
                xy = [box[LEFT], box[TOP]];

                // remove IE default documentElement offset (border)
                if (clientTop || clientLeft) {
                    xy[0] -= clientLeft;
                    xy[1] -= clientTop;
                }

                if ((scrollTop || scrollLeft)) {
                    xy[0] += scrollLeft;
                    xy[1] += scrollTop;
                }

                // gecko may return sub-pixel (non-int) values
                xy[0] = round(xy[0]);
                xy[1] = round(xy[1]);
            } else {
                YAHOO.log('getXY failed: element not positionable (either not in a document or not displayed)', 'error', 'Dom');
            }

            return xy;
        },
        
        /**
         * Gets the current X position of an element based on page coordinates.  The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method getX
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
         * @return {Number | Array} The X position of the element(s)
         */
        getX: function(el) {
            var f = function(el) {
                return Y.Dom.getXY(el)[0];
            };
            
            return Y.Dom.batch(el, f, Y.Dom, true);
        },
        
        /**
         * Gets the current Y position of an element based on page coordinates.  Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method getY
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
         * @return {Number | Array} The Y position of the element(s)
         */
        getY: function(el) {
            var f = function(el) {
                return Y.Dom.getXY(el)[1];
            };
            
            return Y.Dom.batch(el, f, Y.Dom, true);
        },
        
        /**
         * Set the position of an html element in page coordinates, regardless of how the element is positioned.
         * The element(s) must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method setXY
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
         * @param {Array} pos Contains X &amp; Y values for new position (coordinates are page-based)
         * @param {Boolean} noRetry By default we try and set the position a second time if the first fails
         */
        setXY: function(el, pos, noRetry) {
            Y.Dom.batch(el, Y.Dom._setXY, { pos: pos, noRetry: noRetry });
        },

        _setXY: function(node, args) {
            var pos = Y.Dom._getStyle(node, POSITION),
                setStyle = Y.Dom.setStyle,
                xy = args.pos,
                noRetry = args.noRetry,

                delta = [ // assuming pixels; if not we will have to retry
                    parseInt( Y.Dom.getComputedStyle(node, LEFT), 10 ),
                    parseInt( Y.Dom.getComputedStyle(node, TOP), 10 )
                ],

                currentXY,
                newXY;
        
            currentXY = Y.Dom._getXY(node);

            if (!xy || currentXY === false) { // has to be part of doc to have xy
                YAHOO.log('xy failed: node not available', 'error', 'Node');
                return false; 
            }
            
            if (pos == 'static') { // default to relative
                pos = RELATIVE;
                setStyle(node, POSITION, pos);
            }

            if ( isNaN(delta[0]) ) {// in case of 'auto'
                delta[0] = (pos == RELATIVE) ? 0 : node[OFFSET_LEFT];
            } 
            if ( isNaN(delta[1]) ) { // in case of 'auto'
                delta[1] = (pos == RELATIVE) ? 0 : node[OFFSET_TOP];
            } 

            if (xy[0] !== null) { // from setX
                setStyle(node, LEFT, xy[0] - currentXY[0] + delta[0] + 'px');
            }

            if (xy[1] !== null) { // from setY
                setStyle(node, TOP, xy[1] - currentXY[1] + delta[1] + 'px');
            }
          
            if (!noRetry) {
                newXY = Y.Dom._getXY(node);

                // if retry is true, try one more time if we miss 
               if ( (xy[0] !== null &amp;&amp; newXY[0] != xy[0]) || 
                    (xy[1] !== null &amp;&amp; newXY[1] != xy[1]) ) {
                   Y.Dom._setXY(node, { pos: xy, noRetry: true });
               }
            }        

            YAHOO.log('setXY setting position to ' + xy, 'info', 'Node');
        },
        
        /**
         * Set the X position of an html element in page coordinates, regardless of how the element is positioned.
         * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method setX
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @param {Int} x The value to use as the X coordinate for the element(s).
         */
        setX: function(el, x) {
            Y.Dom.setXY(el, [x, null]);
        },
        
        /**
         * Set the Y position of an html element in page coordinates, regardless of how the element is positioned.
         * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
         * @method setY
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @param {Int} x To use as the Y coordinate for the element(s).
         */
        setY: function(el, y) {
            Y.Dom.setXY(el, [null, y]);
        },
        
        /**
         * Returns the region position of the given element.
         * The element must be part of the DOM tree to have a region (display:none or elements not appended return false).
         * @method getRegion
         * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
         * @return {Region | Array} A Region or array of Region instances containing &quot;top, left, bottom, right&quot; member data.
         */
        getRegion: function(el) {
            var f = function(el) {
                var region = false;
                if ( Y.Dom._canPosition(el) ) {
                    region = Y.Region.getRegion(el);
                    YAHOO.log('getRegion returning ' + region, 'info', 'Dom');
                } else {
                    YAHOO.log('getRegion failed: element not positionable (either not in a document or not displayed)', 'error', 'Dom');
                }

                return region;
            };
            
            return Y.Dom.batch(el, f, Y.Dom, true);
        },
        
        /**
         * Returns the width of the client (viewport).
         * @method getClientWidth
         * @deprecated Now using getViewportWidth.  This interface left intact for back compat.
         * @return {Int} The width of the viewable area of the page.
         */
        getClientWidth: function() {
            return Y.Dom.getViewportWidth();
        },
        
        /**
         * Returns the height of the client (viewport).
         * @method getClientHeight
         * @deprecated Now using getViewportHeight.  This interface left intact for back compat.
         * @return {Int} The height of the viewable area of the page.
         */
        getClientHeight: function() {
            return Y.Dom.getViewportHeight();
        },

        /**
         * Returns an array of HTMLElements with the given class.
         * For optimized performance, include a tag and/or root node when possible.
         * Note: This method operates against a live collection, so modifying the 
         * collection in the callback (removing/appending nodes, etc.) will have
         * side effects.  Instead you should iterate the returned nodes array,
         * as you would with the native &quot;getElementsByTagName&quot; method. 
         * @method getElementsByClassName
         * @param {String} className The class name to match against
         * @param {String} tag (optional) The tag name of the elements being collected
         * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point.
         * This element is not included in the className scan.
         * @param {Function} apply (optional) A function to apply to each element when found 
         * @param {Any} o (optional) An optional arg that is passed to the supplied method
         * @param {Boolean} overrides (optional) Whether or not to override the scope of &quot;method&quot; with &quot;o&quot;
         * @return {Array} An array of elements that have the given class name
         */
        getElementsByClassName: function(className, tag, root, apply, o, overrides) {
            tag = tag || '*';
            root = (root) ? Y.Dom.get(root) : null || document; 
            if (!root) {
                return [];
            }

            var nodes = [],
                elements = root.getElementsByTagName(tag),
                hasClass = Y.Dom.hasClass;

            for (var i = 0, len = elements.length; i &lt; len; ++i) {
                if ( hasClass(elements[i], className) ) {
                    nodes[nodes.length] = elements[i];
                }
            }
            
            if (apply) {
                Y.Dom.batch(nodes, apply, o, overrides);
            }

            return nodes;
        },

        /**
         * Determines whether an HTMLElement has the given className.
         * @method hasClass
         * @param {String | HTMLElement | Array} el The element or collection to test
         * @param {String | RegExp} className the class name to search for, or a regular
         * expression to match against
         * @return {Boolean | Array} A boolean value or array of boolean values
         */
        hasClass: function(el, className) {
            return Y.Dom.batch(el, Y.Dom._hasClass, className);
        },

        _hasClass: function(el, className) {
            var ret = false,
                current;
            
            if (el &amp;&amp; className) {
                current = Y.Dom._getAttribute(el, CLASS_NAME) || EMPTY;
                if (current) { // convert line breaks, tabs and other delims to spaces
                    current = current.replace(/\s+/g, SPACE);
                }

                if (className.exec) {
                    ret = className.test(current);
                } else {
                    ret = className &amp;&amp; (SPACE + current + SPACE).
                        indexOf(SPACE + className + SPACE) &gt; -1;
                }
            } else {
                YAHOO.log('hasClass called with invalid arguments', 'warn', 'Dom');
            }

            return ret;
        },
    
        /**
         * Adds a class name to a given element or collection of elements.
         * @method addClass         
         * @param {String | HTMLElement | Array} el The element or collection to add the class to
         * @param {String} className the class name to add to the class attribute
         * @return {Boolean | Array} A pass/fail boolean or array of booleans
         */
        addClass: function(el, className) {
            return Y.Dom.batch(el, Y.Dom._addClass, className);
        },

        _addClass: function(el, className) {
            var ret = false,
                current;

            if (el &amp;&amp; className) {
                current = Y.Dom._getAttribute(el, CLASS_NAME) || EMPTY;
                if ( !Y.Dom._hasClass(el, className) ) {
                    Y.Dom.setAttribute(el, CLASS_NAME, trim(current + SPACE + className));
                    ret = true;
                }
            } else {
                YAHOO.log('addClass called with invalid arguments', 'warn', 'Dom');
            }

            return ret;
        },
    
        /**
         * Removes a class name from a given element or collection of elements.
         * @method removeClass         
         * @param {String | HTMLElement | Array} el The element or collection to remove the class from
         * @param {String} className the class name to remove from the class attribute
         * @return {Boolean | Array} A pass/fail boolean or array of booleans
         */
        removeClass: function(el, className) {
            return Y.Dom.batch(el, Y.Dom._removeClass, className);
        },
        
        _removeClass: function(el, className) {
            var ret = false,
                current,
                newClass,
                attr;

            if (el &amp;&amp; className) {
                current = Y.Dom._getAttribute(el, CLASS_NAME) || EMPTY;
                Y.Dom.setAttribute(el, CLASS_NAME, current.replace(Y.Dom._getClassRegex(className), EMPTY));

                newClass = Y.Dom._getAttribute(el, CLASS_NAME);
                if (current !== newClass) { // else nothing changed
                    Y.Dom.setAttribute(el, CLASS_NAME, trim(newClass)); // trim after comparing to current class
                    ret = true;

                    if (Y.Dom._getAttribute(el, CLASS_NAME) === '') { // remove class attribute if empty
                        attr = (el.hasAttribute &amp;&amp; el.hasAttribute(_CLASS)) ? _CLASS : CLASS_NAME;
                        YAHOO.log('removeClass removing empty class attribute', 'info', 'Dom');
                        el.removeAttribute(attr);
                    }
                }

            } else {
                YAHOO.log('removeClass called with invalid arguments', 'warn', 'Dom');
            }

            return ret;
        },
        
        /**
         * Replace a class with another class for a given element or collection of elements.
         * If no oldClassName is present, the newClassName is simply added.
         * @method replaceClass  
         * @param {String | HTMLElement | Array} el The element or collection to remove the class from
         * @param {String} oldClassName the class name to be replaced
         * @param {String} newClassName the class name that will be replacing the old class name
         * @return {Boolean | Array} A pass/fail boolean or array of booleans
         */
        replaceClass: function(el, oldClassName, newClassName) {
            return Y.Dom.batch(el, Y.Dom._replaceClass, { from: oldClassName, to: newClassName });
        },

        _replaceClass: function(el, classObj) {
            var className,
                from,
                to,
                ret = false,
                current;

            if (el &amp;&amp; classObj) {
                from = classObj.from;
                to = classObj.to;

                if (!to) {
                    ret = false;
                }  else if (!from) { // just add if no &quot;from&quot;
                    ret = Y.Dom._addClass(el, classObj.to);
                } else if (from !== to) { // else nothing to replace
                    // May need to lead with DBLSPACE?
                    current = Y.Dom._getAttribute(el, CLASS_NAME) || EMPTY;
                    className = (SPACE + current.replace(Y.Dom._getClassRegex(from), SPACE + to).
                            replace(/\s+/g, SPACE)). // normalize white space
                            split(Y.Dom._getClassRegex(to));

                    // insert to into what would have been the first occurrence slot
                    className.splice(1, 0, SPACE + to);
                    Y.Dom.setAttribute(el, CLASS_NAME, trim(className.join(EMPTY)));
                    ret = true;
                }
            } else {
                YAHOO.log('replaceClass called with invalid arguments', 'warn', 'Dom');
            }

            return ret;
        },
        
        /**
         * Returns an ID and applies it to the element &quot;el&quot;, if provided.
         * @method generateId  
         * @param {String | HTMLElement | Array} el (optional) An optional element array of elements to add an ID to (no ID is added if one is already present).
         * @param {String} prefix (optional) an optional prefix to use (defaults to &quot;yui-gen&quot;).
         * @return {String | Array} The generated ID, or array of generated IDs (or original ID if already present on an element)
         */
        generateId: function(el, prefix) {
            prefix = prefix || 'yui-gen';

            var f = function(el) {
                if (el &amp;&amp; el.id) { // do not override existing ID
                    YAHOO.log('generateId returning existing id ' + el.id, 'info', 'Dom');
                    return el.id;
                }

                var id = prefix + YAHOO.env._id_counter++;
                YAHOO.log('generateId generating ' + id, 'info', 'Dom');

                if (el) {
                    if (el[OWNER_DOCUMENT] &amp;&amp; el[OWNER_DOCUMENT].getElementById(id)) { // in case one already exists
                        // use failed id plus prefix to help ensure uniqueness
                        return Y.Dom.generateId(el, id + prefix);
                    }
                    el.id = id;
                }
                
                return id;
            };

            // batch fails when no element, so just generate and return single ID
            return Y.Dom.batch(el, f, Y.Dom, true) || f.apply(Y.Dom, arguments);
        },
        
        /**
         * Determines whether an HTMLElement is an ancestor of another HTML element in the DOM hierarchy.
         * @method isAncestor
         * @param {String | HTMLElement} haystack The possible ancestor
         * @param {String | HTMLElement} needle The possible descendent
         * @return {Boolean} Whether or not the haystack is an ancestor of needle
         */
        isAncestor: function(haystack, needle) {
            haystack = Y.Dom.get(haystack);
            needle = Y.Dom.get(needle);
            
            var ret = false;

            if ( (haystack &amp;&amp; needle) &amp;&amp; (haystack[NODE_TYPE] &amp;&amp; needle[NODE_TYPE]) ) {
                if (haystack.contains &amp;&amp; haystack !== needle) { // contains returns true when equal
                    ret = haystack.contains(needle);
                }
                else if (haystack.compareDocumentPosition) { // gecko
                    ret = !!(haystack.compareDocumentPosition(needle) &amp; 16);
                }
            } else {
                YAHOO.log('isAncestor failed; invalid input: ' + haystack + ',' + needle, 'error', 'Dom');
            }
            YAHOO.log('isAncestor(' + haystack + ',' + needle + ' returning ' + ret, 'info', 'Dom');
            return ret;
        },
        
        /**
         * Determines whether an HTMLElement is present in the current document.
         * @method inDocument         
         * @param {String | HTMLElement} el The element to search for
         * @param {Object} doc An optional document to search, defaults to element's owner document 
         * @return {Boolean} Whether or not the element is present in the current document
         */
        inDocument: function(el, doc) {
            return Y.Dom._inDoc(Y.Dom.get(el), doc);
        },

        _inDoc: function(el, doc) {
            var ret = false;
            if (el &amp;&amp; el[TAG_NAME]) {
                doc = doc || el[OWNER_DOCUMENT]; 
                ret = Y.Dom.isAncestor(doc[DOCUMENT_ELEMENT], el);
            } else {
                YAHOO.log('inDocument failed: invalid input', 'error', 'Dom');
            }
            return ret;
        },
        
        /**
         * Returns an array of HTMLElements that pass the test applied by supplied boolean method.
         * For optimized performance, include a tag and/or root node when possible.
         * Note: This method operates against a live collection, so modifying the 
         * collection in the callback (removing/appending nodes, etc.) will have
         * side effects.  Instead you should iterate the returned nodes array,
         * as you would with the native &quot;getElementsByTagName&quot; method. 
         * @method getElementsBy
         * @param {Function} method - A boolean method for testing elements which receives the element as its only argument.
         * @param {String} tag (optional) The tag name of the elements being collected
         * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point 
         * @param {Function} apply (optional) A function to apply to each element when found 
         * @param {Any} o (optional) An optional arg that is passed to the supplied method
         * @param {Boolean} overrides (optional) Whether or not to override the scope of &quot;method&quot; with &quot;o&quot;
         * @return {Array} Array of HTMLElements
         */
        getElementsBy: function(method, tag, root, apply, o, overrides, firstOnly) {
            tag = tag || '*';
            root = (root) ? Y.Dom.get(root) : null || document; 

                var ret = (firstOnly) ? null : [],
                    elements;
            
            // in case Dom.get() returns null
            if (root) {
                elements = root.getElementsByTagName(tag);
                for (var i = 0, len = elements.length; i &lt; len; ++i) {
                    if ( method(elements[i]) ) {
                        if (firstOnly) {
                            ret = elements[i]; 
                            break;
                        } else {
                            ret[ret.length] = elements[i];
                        }
                    }
                }

                if (apply) {
                    Y.Dom.batch(ret, apply, o, overrides);
                }
            }

            YAHOO.log('getElementsBy returning ' + ret, 'info', 'Dom');
            
            return ret;
        },
        
        /**
         * Returns the first HTMLElement that passes the test applied by the supplied boolean method.
         * @method getElementBy
         * @param {Function} method - A boolean method for testing elements which receives the element as its only argument.
         * @param {String} tag (optional) The tag name of the elements being collected
         * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point 
         * @return {HTMLElement}
         */
        getElementBy: function(method, tag, root) {
            return Y.Dom.getElementsBy(method, tag, root, null, null, null, true); 
        },

        /**
         * Runs the supplied method against each item in the Collection/Array.
         * The method is called with the element(s) as the first arg, and the optional param as the second ( method(el, o) ).
         * @method batch
         * @param {String | HTMLElement | Array} el (optional) An element or array of elements to apply the method to
         * @param {Function} method The method to apply to the element(s)
         * @param {Any} o (optional) An optional arg that is passed to the supplied method
         * @param {Boolean} overrides (optional) Whether or not to override the scope of &quot;method&quot; with &quot;o&quot;
         * @return {Any | Array} The return value(s) from the supplied method
         */
        batch: function(el, method, o, overrides) {
            var collection = [],
                scope = (overrides) ? o : null;
                
            el = (el &amp;&amp; (el[TAG_NAME] || el.item)) ? el : Y.Dom.get(el); // skip get() when possible
            if (el &amp;&amp; method) {
                if (el[TAG_NAME] || el.length === undefined) { // element or not array-like 
                    return method.call(scope, el, o);
                } 

                for (var i = 0; i &lt; el.length; ++i) {
                    collection[collection.length] = method.call(scope || el[i], el[i], o);
                }
            } else {
                YAHOO.log('batch called with invalid arguments', 'warn', 'Dom');
                return false;
            } 
            return collection;
        },
        
        /**
         * Returns the height of the document.
         * @method getDocumentHeight
         * @return {Int} The height of the actual document (which includes the body and its margin).
         */
        getDocumentHeight: function() {
            var scrollHeight = (document[COMPAT_MODE] != CSS1_COMPAT || isSafari) ? document.body.scrollHeight : documentElement.scrollHeight,
                h = Math.max(scrollHeight, Y.Dom.getViewportHeight());

            YAHOO.log('getDocumentHeight returning ' + h, 'info', 'Dom');
            return h;
        },
        
        /**
         * Returns the width of the document.
         * @method getDocumentWidth
         * @return {Int} The width of the actual document (which includes the body and its margin).
         */
        getDocumentWidth: function() {
            var scrollWidth = (document[COMPAT_MODE] != CSS1_COMPAT || isSafari) ? document.body.scrollWidth : documentElement.scrollWidth,
                w = Math.max(scrollWidth, Y.Dom.getViewportWidth());
            YAHOO.log('getDocumentWidth returning ' + w, 'info', 'Dom');
            return w;
        },

        /**
         * Returns the current height of the viewport.
         * @method getViewportHeight
         * @return {Int} The height of the viewable area of the page (excludes scrollbars).
         */
        getViewportHeight: function() {
            var height = self.innerHeight, // Safari, Opera
                mode = document[COMPAT_MODE];
        
            if ( (mode || isIE) &amp;&amp; !isOpera ) { // IE, Gecko
                height = (mode == CSS1_COMPAT) ?
                        documentElement.clientHeight : // Standards
                        document.body.clientHeight; // Quirks
            }
        
            YAHOO.log('getViewportHeight returning ' + height, 'info', 'Dom');
            return height;
        },
        
        /**
         * Returns the current width of the viewport.
         * @method getViewportWidth
         * @return {Int} The width of the viewable area of the page (excludes scrollbars).
         */
        
        getViewportWidth: function() {
            var width = self.innerWidth,  // Safari
                mode = document[COMPAT_MODE];
            
            if (mode || isIE) { // IE, Gecko, Opera
                width = (mode == CSS1_COMPAT) ?
                        documentElement.clientWidth : // Standards
                        document.body.clientWidth; // Quirks
            }
            YAHOO.log('getViewportWidth returning ' + width, 'info', 'Dom');
            return width;
        },

       /**
         * Returns the nearest ancestor that passes the test applied by supplied boolean method.
         * For performance reasons, IDs are not accepted and argument validation omitted.
         * @method getAncestorBy
         * @param {HTMLElement} node The HTMLElement to use as the starting point 
         * @param {Function} method - A boolean method for testing elements which receives the element as its only argument.
         * @return {Object} HTMLElement or null if not found
         */
        getAncestorBy: function(node, method) {
            while ( (node = node[PARENT_NODE]) ) { // NOTE: assignment
                if ( Y.Dom._testElement(node, method) ) {
                    YAHOO.log('getAncestorBy returning ' + node, 'info', 'Dom');
                    return node;
                }
            } 

            YAHOO.log('getAncestorBy returning null (no ancestor passed test)', 'error', 'Dom');
            return null;
        },
        
        /**
         * Returns the nearest ancestor with the given className.
         * @method getAncestorByClassName
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @param {String} className
         * @return {Object} HTMLElement
         */
        getAncestorByClassName: function(node, className) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getAncestorByClassName failed: invalid node argument', 'error', 'Dom');
                return null;
            }
            var method = function(el) { return Y.Dom.hasClass(el, className); };
            return Y.Dom.getAncestorBy(node, method);
        },

        /**
         * Returns the nearest ancestor with the given tagName.
         * @method getAncestorByTagName
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @param {String} tagName
         * @return {Object} HTMLElement
         */
        getAncestorByTagName: function(node, tagName) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getAncestorByTagName failed: invalid node argument', 'error', 'Dom');
                return null;
            }
            var method = function(el) {
                 return el[TAG_NAME] &amp;&amp; el[TAG_NAME].toUpperCase() == tagName.toUpperCase();
            };

            return Y.Dom.getAncestorBy(node, method);
        },

        /**
         * Returns the previous sibling that is an HTMLElement. 
         * For performance reasons, IDs are not accepted and argument validation omitted.
         * Returns the nearest HTMLElement sibling if no method provided.
         * @method getPreviousSiblingBy
         * @param {HTMLElement} node The HTMLElement to use as the starting point 
         * @param {Function} method A boolean function used to test siblings
         * that receives the sibling node being tested as its only argument
         * @return {Object} HTMLElement or null if not found
         */
        getPreviousSiblingBy: function(node, method) {
            while (node) {
                node = node.previousSibling;
                if ( Y.Dom._testElement(node, method) ) {
                    return node;
                }
            }
            return null;
        }, 

        /**
         * Returns the previous sibling that is an HTMLElement 
         * @method getPreviousSibling
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @return {Object} HTMLElement or null if not found
         */
        getPreviousSibling: function(node) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getPreviousSibling failed: invalid node argument', 'error', 'Dom');
                return null;
            }

            return Y.Dom.getPreviousSiblingBy(node);
        }, 

        /**
         * Returns the next HTMLElement sibling that passes the boolean method. 
         * For performance reasons, IDs are not accepted and argument validation omitted.
         * Returns the nearest HTMLElement sibling if no method provided.
         * @method getNextSiblingBy
         * @param {HTMLElement} node The HTMLElement to use as the starting point 
         * @param {Function} method A boolean function used to test siblings
         * that receives the sibling node being tested as its only argument
         * @return {Object} HTMLElement or null if not found
         */
        getNextSiblingBy: function(node, method) {
            while (node) {
                node = node.nextSibling;
                if ( Y.Dom._testElement(node, method) ) {
                    return node;
                }
            }
            return null;
        }, 

        /**
         * Returns the next sibling that is an HTMLElement 
         * @method getNextSibling
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @return {Object} HTMLElement or null if not found
         */
        getNextSibling: function(node) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getNextSibling failed: invalid node argument', 'error', 'Dom');
                return null;
            }

            return Y.Dom.getNextSiblingBy(node);
        }, 

        /**
         * Returns the first HTMLElement child that passes the test method. 
         * @method getFirstChildBy
         * @param {HTMLElement} node The HTMLElement to use as the starting point 
         * @param {Function} method A boolean function used to test children
         * that receives the node being tested as its only argument
         * @return {Object} HTMLElement or null if not found
         */
        getFirstChildBy: function(node, method) {
            var child = ( Y.Dom._testElement(node.firstChild, method) ) ? node.firstChild : null;
            return child || Y.Dom.getNextSiblingBy(node.firstChild, method);
        }, 

        /**
         * Returns the first HTMLElement child. 
         * @method getFirstChild
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @return {Object} HTMLElement or null if not found
         */
        getFirstChild: function(node, method) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getFirstChild failed: invalid node argument', 'error', 'Dom');
                return null;
            }
            return Y.Dom.getFirstChildBy(node);
        }, 

        /**
         * Returns the last HTMLElement child that passes the test method. 
         * @method getLastChildBy
         * @param {HTMLElement} node The HTMLElement to use as the starting point 
         * @param {Function} method A boolean function used to test children
         * that receives the node being tested as its only argument
         * @return {Object} HTMLElement or null if not found
         */
        getLastChildBy: function(node, method) {
            if (!node) {
                YAHOO.log('getLastChild failed: invalid node argument', 'error', 'Dom');
                return null;
            }
            var child = ( Y.Dom._testElement(node.lastChild, method) ) ? node.lastChild : null;
            return child || Y.Dom.getPreviousSiblingBy(node.lastChild, method);
        }, 

        /**
         * Returns the last HTMLElement child. 
         * @method getLastChild
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @return {Object} HTMLElement or null if not found
         */
        getLastChild: function(node) {
            node = Y.Dom.get(node);
            return Y.Dom.getLastChildBy(node);
        }, 

        /**
         * Returns an array of HTMLElement childNodes that pass the test method. 
         * @method getChildrenBy
         * @param {HTMLElement} node The HTMLElement to start from
         * @param {Function} method A boolean function used to test children
         * that receives the node being tested as its only argument
         * @return {Array} A static array of HTMLElements
         */
        getChildrenBy: function(node, method) {
            var child = Y.Dom.getFirstChildBy(node, method),
                children = child ? [child] : [];

            Y.Dom.getNextSiblingBy(child, function(node) {
                if ( !method || method(node) ) {
                    children[children.length] = node;
                }
                return false; // fail test to collect all children
            });

            return children;
        },
 
        /**
         * Returns an array of HTMLElement childNodes. 
         * @method getChildren
         * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point 
         * @return {Array} A static array of HTMLElements
         */
        getChildren: function(node) {
            node = Y.Dom.get(node);
            if (!node) {
                YAHOO.log('getChildren failed: invalid node argument', 'error', 'Dom');
            }

            return Y.Dom.getChildrenBy(node);
        },

        /**
         * Returns the left scroll value of the document 
         * @method getDocumentScrollLeft
         * @param {HTMLDocument} document (optional) The document to get the scroll value of
         * @return {Int}  The amount that the document is scrolled to the left
         */
        getDocumentScrollLeft: function(doc) {
            doc = doc || document;
            return Math.max(doc[DOCUMENT_ELEMENT].scrollLeft, doc.body.scrollLeft);
        }, 

        /**
         * Returns the top scroll value of the document 
         * @method getDocumentScrollTop
         * @param {HTMLDocument} document (optional) The document to get the scroll value of
         * @return {Int}  The amount that the document is scrolled to the top
         */
        getDocumentScrollTop: function(doc) {
            doc = doc || document;
            return Math.max(doc[DOCUMENT_ELEMENT].scrollTop, doc.body.scrollTop);
        },

        /**
         * Inserts the new node as the previous sibling of the reference node 
         * @method insertBefore
         * @param {String | HTMLElement} newNode The node to be inserted
         * @param {String | HTMLElement} referenceNode The node to insert the new node before 
         * @return {HTMLElement} The node that was inserted (or null if insert fails) 
         */
        insertBefore: function(newNode, referenceNode) {
            newNode = Y.Dom.get(newNode); 
            referenceNode = Y.Dom.get(referenceNode); 
            
            if (!newNode || !referenceNode || !referenceNode[PARENT_NODE]) {
                YAHOO.log('insertAfter failed: missing or invalid arg(s)', 'error', 'Dom');
                return null;
            }       

            return referenceNode[PARENT_NODE].insertBefore(newNode, referenceNode); 
        },

        /**
         * Inserts the new node as the next sibling of the reference node 
         * @method insertAfter
         * @param {String | HTMLElement} newNode The node to be inserted
         * @param {String | HTMLElement} referenceNode The node to insert the new node after 
         * @return {HTMLElement} The node that was inserted (or null if insert fails) 
         */
        insertAfter: function(newNode, referenceNode) {
            newNode = Y.Dom.get(newNode); 
            referenceNode = Y.Dom.get(referenceNode); 
            
            if (!newNode || !referenceNode || !referenceNode[PARENT_NODE]) {
                YAHOO.log('insertAfter failed: missing or invalid arg(s)', 'error', 'Dom');
                return null;
            }       

            if (referenceNode.nextSibling) {
                return referenceNode[PARENT_NODE].insertBefore(newNode, referenceNode.nextSibling); 
            } else {
                return referenceNode[PARENT_NODE].appendChild(newNode);
            }
        },

        /**
         * Creates a Region based on the viewport relative to the document. 
         * @method getClientRegion
         * @return {Region} A Region object representing the viewport which accounts for document scroll
         */
        getClientRegion: function() {
            var t = Y.Dom.getDocumentScrollTop(),
                l = Y.Dom.getDocumentScrollLeft(),
                r = Y.Dom.getViewportWidth() + l,
                b = Y.Dom.getViewportHeight() + t;

            return new Y.Region(t, r, b, l);
        },

        /**
         * Provides a normalized attribute interface. 
         * @method setAttribute
         * @param {String | HTMLElement} el The target element for the attribute.
         * @param {String} attr The attribute to set.
         * @param {String} val The value of the attribute.
         */
        setAttribute: function(el, attr, val) {
            Y.Dom.batch(el, Y.Dom._setAttribute, { attr: attr, val: val });
        },

        _setAttribute: function(el, args) {
            var attr = Y.Dom._toCamel(args.attr),
                val = args.val;

            if (el &amp;&amp; el.setAttribute) {
                // set as DOM property, except for BUTTON, which errors on property setter
                if (Y.Dom.DOT_ATTRIBUTES[attr] &amp;&amp; el.tagName &amp;&amp; el.tagName != 'BUTTON') {
                    el[attr] = val;
                } else {
                    attr = Y.Dom.CUSTOM_ATTRIBUTES[attr] || attr;
                    el.setAttribute(attr, val);
                }
            } else {
                YAHOO.log('setAttribute method not available for ' + el, 'error', 'Dom');
            }
        },

        /**
         * Provides a normalized attribute interface. 
         * @method getAttribute
         * @param {String | HTMLElement} el The target element for the attribute.
         * @param {String} attr The attribute to get.
         * @return {String} The current value of the attribute. 
         */
        getAttribute: function(el, attr) {
            return Y.Dom.batch(el, Y.Dom._getAttribute, attr);
        },


        _getAttribute: function(el, attr) {
            var val;
            attr = Y.Dom.CUSTOM_ATTRIBUTES[attr] || attr;

            if (Y.Dom.DOT_ATTRIBUTES[attr]) {
                val = el[attr];
            } else if (el &amp;&amp; 'getAttribute' in el) {
                if (/^(?:href|src)$/.test(attr)) { // use IE flag to return exact value
                    val = el.getAttribute(attr, 2);
                } else {
                    val = el.getAttribute(attr);
                }
            } else {
                YAHOO.log('getAttribute method not available for ' + el, 'error', 'Dom');
            }

            return val;
        },

        _toCamel: function(property) {
            var c = propertyCache;

            function tU(x,l) {
                return l.toUpperCase();
            }

            return c[property] || (c[property] = property.indexOf('-') === -1 ? 
                                    property :
                                    property.replace( /-([a-z])/gi, tU ));
        },

        _getClassRegex: function(className) {
            var re;
            if (className !== undefined) { // allow empty string to pass
                if (className.exec) { // already a RegExp
                    re = className;
                } else {
                    re = reCache[className];
                    if (!re) {
                        // escape special chars (&quot;.&quot;, &quot;[&quot;, etc.)
                        className = className.replace(Y.Dom._patterns.CLASS_RE_TOKENS, '\\$1');
                        className = className.replace(/\s+/g, SPACE); // convert line breaks and other delims
                        re = reCache[className] = new RegExp(C_START + className + C_END, G);
                    }
                }
            }
            return re;
        },

        _patterns: {
            ROOT_TAG: /^body|html$/i, // body for quirks mode, html for standards,
            CLASS_RE_TOKENS: /([\.\(\)\^\$\*\+\?\|\[\]\{\}\\])/g
        },


        _testElement: function(node, method) {
            return node &amp;&amp; node[NODE_TYPE] == 1 &amp;&amp; ( !method || method(node) );
        },

        _calcBorders: function(node, xy2) {
            var t = parseInt(Y.Dom[GET_COMPUTED_STYLE](node, BORDER_TOP_WIDTH), 10) || 0,
                l = parseInt(Y.Dom[GET_COMPUTED_STYLE](node, BORDER_LEFT_WIDTH), 10) || 0;
            if (isGecko) {
                if (RE_TABLE.test(node[TAG_NAME])) {
                    t = 0;
                    l = 0;
                }
            }
            xy2[0] += l;
            xy2[1] += t;
            return xy2;
        }
    };
        
    var _getComputedStyle = Y.Dom[GET_COMPUTED_STYLE];
    // fix opera computedStyle default color unit (convert to rgb)
    if (UA.opera) {
        Y.Dom[GET_COMPUTED_STYLE] = function(node, att) {
            var val = _getComputedStyle(node, att);
            if (RE_COLOR.test(att)) {
                val = Y.Dom.Color.toRGB(val);
            }

            return val;
        };

    }

    // safari converts transparent to rgba(), others use &quot;transparent&quot;
    if (UA.webkit) {
        Y.Dom[GET_COMPUTED_STYLE] = function(node, att) {
            var val = _getComputedStyle(node, att);

            if (val === 'rgba(0, 0, 0, 0)') {
                val = 'transparent'; 
            }

            return val;
        };

    }

    if (UA.ie &amp;&amp; UA.ie &gt;= 8) {
        Y.Dom.DOT_ATTRIBUTES.type = true; // IE 8 errors on input.setAttribute('type')
    }
})();
/**
 * A region is a representation of an object on a grid.  It is defined
 * by the top, right, bottom, left extents, so is rectangular by default.  If 
 * other shapes are required, this class could be extended to support it.
 * @namespace YAHOO.util
 * @class Region
 * @param {Int} t the top extent
 * @param {Int} r the right extent
 * @param {Int} b the bottom extent
 * @param {Int} l the left extent
 * @constructor
 */
YAHOO.util.Region = function(t, r, b, l) {

    /**
     * The region's top extent
     * @property top
     * @type Int
     */
    this.top = t;
    
    /**
     * The region's top extent
     * @property y
     * @type Int
     */
    this.y = t;
    
    /**
     * The region's top extent as index, for symmetry with set/getXY
     * @property 1
     * @type Int
     */
    this[1] = t;

    /**
     * The region's right extent
     * @property right
     * @type int
     */
    this.right = r;

    /**
     * The region's bottom extent
     * @property bottom
     * @type Int
     */
    this.bottom = b;

    /**
     * The region's left extent
     * @property left
     * @type Int
     */
    this.left = l;
    
    /**
     * The region's left extent
     * @property x
     * @type Int
     */
    this.x = l;
    
    /**
     * The region's left extent as index, for symmetry with set/getXY
     * @property 0
     * @type Int
     */
    this[0] = l;

    /**
     * The region's total width 
     * @property width 
     * @type Int
     */
    this.width = this.right - this.left;

    /**
     * The region's total height 
     * @property height 
     * @type Int
     */
    this.height = this.bottom - this.top;
};

/**
 * Returns true if this region contains the region passed in
 * @method contains
 * @param  {Region}  region The region to evaluate
 * @return {Boolean}        True if the region is contained with this region, 
 *                          else false
 */
YAHOO.util.Region.prototype.contains = function(region) {
    return ( region.left   &gt;= this.left   &amp;&amp; 
             region.right  &lt;= this.right  &amp;&amp; 
             region.top    &gt;= this.top    &amp;&amp; 
             region.bottom &lt;= this.bottom    );

    // this.logger.debug(&quot;does &quot; + this + &quot; contain &quot; + region + &quot; ... &quot; + ret);
};

/**
 * Returns the area of the region
 * @method getArea
 * @return {Int} the region's area
 */
YAHOO.util.Region.prototype.getArea = function() {
    return ( (this.bottom - this.top) * (this.right - this.left) );
};

/**
 * Returns the region where the passed in region overlaps with this one
 * @method intersect
 * @param  {Region} region The region that intersects
 * @return {Region}        The overlap region, or null if there is no overlap
 */
YAHOO.util.Region.prototype.intersect = function(region) {
    var t = Math.max( this.top,    region.top    ),
        r = Math.min( this.right,  region.right  ),
        b = Math.min( this.bottom, region.bottom ),
        l = Math.max( this.left,   region.left   );
    
    if (b &gt;= t &amp;&amp; r &gt;= l) {
        return new YAHOO.util.Region(t, r, b, l);
    } else {
        return null;
    }
};

/**
 * Returns the region representing the smallest region that can contain both
 * the passed in region and this region.
 * @method union
 * @param  {Region} region The region that to create the union with
 * @return {Region}        The union region
 */
YAHOO.util.Region.prototype.union = function(region) {
    var t = Math.min( this.top,    region.top    ),
        r = Math.max( this.right,  region.right  ),
        b = Math.max( this.bottom, region.bottom ),
        l = Math.min( this.left,   region.left   );

    return new YAHOO.util.Region(t, r, b, l);
};

/**
 * toString
 * @method toString
 * @return string the region properties
 */
YAHOO.util.Region.prototype.toString = function() {
    return ( &quot;Region {&quot;    +
             &quot;top: &quot;       + this.top    + 
             &quot;, right: &quot;   + this.right  + 
             &quot;, bottom: &quot;  + this.bottom + 
             &quot;, left: &quot;    + this.left   + 
             &quot;, height: &quot;  + this.height + 
             &quot;, width: &quot;    + this.width   + 
             &quot;}&quot; );
};

/**
 * Returns a region that is occupied by the DOM element
 * @method getRegion
 * @param  {HTMLElement} el The element
 * @return {Region}         The region that the element occupies
 * @static
 */
YAHOO.util.Region.getRegion = function(el) {
    var p = YAHOO.util.Dom.getXY(el),
        t = p[1],
        r = p[0] + el.offsetWidth,
        b = p[1] + el.offsetHeight,
        l = p[0];

    return new YAHOO.util.Region(t, r, b, l);
};

/////////////////////////////////////////////////////////////////////////////


/**
 * A point is a region that is special in that it represents a single point on 
 * the grid.
 * @namespace YAHOO.util
 * @class Point
 * @param {Int} x The X position of the point
 * @param {Int} y The Y position of the point
 * @constructor
 * @extends YAHOO.util.Region
 */
YAHOO.util.Point = function(x, y) {
   if (YAHOO.lang.isArray(x)) { // accept input from Dom.getXY, Event.getXY, etc.
      y = x[1]; // dont blow away x yet
      x = x[0];
   }
 
    YAHOO.util.Point.superclass.constructor.call(this, y, x, y, x);
};

YAHOO.extend(YAHOO.util.Point, YAHOO.util.Region);

(function() {
/**
 * Internal methods used to add style management functionality to DOM.
 * @module dom
 * @class IEStyle
 * @namespace YAHOO.util.Dom
 */

var Y = YAHOO.util, 
    CLIENT_TOP = 'clientTop',
    CLIENT_LEFT = 'clientLeft',
    PARENT_NODE = 'parentNode',
    RIGHT = 'right',
    HAS_LAYOUT = 'hasLayout',
    PX = 'px',
    OPACITY = 'opacity',
    AUTO = 'auto',
    BORDER_LEFT_WIDTH = 'borderLeftWidth',
    BORDER_TOP_WIDTH = 'borderTopWidth',
    BORDER_RIGHT_WIDTH = 'borderRightWidth',
    BORDER_BOTTOM_WIDTH = 'borderBottomWidth',
    VISIBLE = 'visible',
    TRANSPARENT = 'transparent',
    HEIGHT = 'height',
    WIDTH = 'width',
    STYLE = 'style',
    CURRENT_STYLE = 'currentStyle',

// IE getComputedStyle
// TODO: unit-less lineHeight (e.g. 1.22)
    re_size = /^width|height$/,
    re_unit = /^(\d[.\d]*)+(em|ex|px|gd|rem|vw|vh|vm|ch|mm|cm|in|pt|pc|deg|rad|ms|s|hz|khz|%){1}?/i,

    ComputedStyle = {
        /**
        * @method get
        * @description Method used by DOM to get style information for IE
        * @param {HTMLElement} el The element to check
        * @param {String} property The property to check
        * @returns {String} The computed style
        */
        get: function(el, property) {
            var value = '',
                current = el[CURRENT_STYLE][property];

            if (property === OPACITY) {
                value = Y.Dom.getStyle(el, OPACITY);        
            } else if (!current || (current.indexOf &amp;&amp; current.indexOf(PX) &gt; -1)) { // no need to convert
                value = current;
            } else if (Y.Dom.IE_COMPUTED[property]) { // use compute function
                value = Y.Dom.IE_COMPUTED[property](el, property);
            } else if (re_unit.test(current)) { // convert to pixel
                value = Y.Dom.IE.ComputedStyle.getPixel(el, property);
            } else {
                value = current;
            }

            return value;
        },
        /**
        * @method getOffset
        * @description Determine the offset of an element
        * @param {HTMLElement} el The element to check
        * @param {String} prop The property to check.
        * @return {String} The offset
        */
        getOffset: function(el, prop) {
            var current = el[CURRENT_STYLE][prop],                        // value of &quot;width&quot;, &quot;top&quot;, etc.
                capped = prop.charAt(0).toUpperCase() + prop.substr(1), // &quot;Width&quot;, &quot;Top&quot;, etc.
                offset = 'offset' + capped,                             // &quot;offsetWidth&quot;, &quot;offsetTop&quot;, etc.
                pixel = 'pixel' + capped,                               // &quot;pixelWidth&quot;, &quot;pixelTop&quot;, etc.
                value = '',
                actual;

            if (current == AUTO) {
                actual = el[offset]; // offsetHeight/Top etc.
                if (actual === undefined) { // likely &quot;right&quot; or &quot;bottom&quot;
                    value = 0;
                }

                value = actual;
                if (re_size.test(prop)) { // account for box model diff 
                    el[STYLE][prop] = actual; 
                    if (el[offset] &gt; actual) {
                        // the difference is padding + border (works in Standards &amp; Quirks modes)
                        value = actual - (el[offset] - actual);
                    }
                    el[STYLE][prop] = AUTO; // revert to auto
                }
            } else { // convert units to px
                if (!el[STYLE][pixel] &amp;&amp; !el[STYLE][prop]) { // need to map style.width to currentStyle (no currentStyle.pixelWidth)
                    el[STYLE][prop] = current;              // no style.pixelWidth if no style.width
                }
                value = el[STYLE][pixel];
            }
            return value + PX;
        },
        /**
        * @method getBorderWidth
        * @description Try to determine the width of an elements border
        * @param {HTMLElement} el The element to check
        * @param {String} property The property to check
        * @return {String} The elements border width
        */
        getBorderWidth: function(el, property) {
            // clientHeight/Width = paddingBox (e.g. offsetWidth - borderWidth)
            // clientTop/Left = borderWidth
            var value = null;
            if (!el[CURRENT_STYLE][HAS_LAYOUT]) { // TODO: unset layout?
                el[STYLE].zoom = 1; // need layout to measure client
            }

            switch(property) {
                case BORDER_TOP_WIDTH:
                    value = el[CLIENT_TOP];
                    break;
                case BORDER_BOTTOM_WIDTH:
                    value = el.offsetHeight - el.clientHeight - el[CLIENT_TOP];
                    break;
                case BORDER_LEFT_WIDTH:
                    value = el[CLIENT_LEFT];
                    break;
                case BORDER_RIGHT_WIDTH:
                    value = el.offsetWidth - el.clientWidth - el[CLIENT_LEFT];
                    break;
            }
            return value + PX;
        },
        /**
        * @method getPixel
        * @description Get the pixel value from a style property
        * @param {HTMLElement} node The element to check
        * @param {String} att The attribute to check
        * @return {String} The pixel value
        */
        getPixel: function(node, att) {
            // use pixelRight to convert to px
            var val = null,
                styleRight = node[CURRENT_STYLE][RIGHT],
                current = node[CURRENT_STYLE][att];

            node[STYLE][RIGHT] = current;
            val = node[STYLE].pixelRight;
            node[STYLE][RIGHT] = styleRight; // revert

            return val + PX;
        },

        /**
        * @method getMargin
        * @description Get the margin value from a style property
        * @param {HTMLElement} node The element to check
        * @param {String} att The attribute to check
        * @return {String} The margin value
        */
        getMargin: function(node, att) {
            var val;
            if (node[CURRENT_STYLE][att] == AUTO) {
                val = 0 + PX;
            } else {
                val = Y.Dom.IE.ComputedStyle.getPixel(node, att);
            }
            return val;
        },

        /**
        * @method getVisibility
        * @description Get the visibility of an element
        * @param {HTMLElement} node The element to check
        * @param {String} att The attribute to check
        * @return {String} The value
        */
        getVisibility: function(node, att) {
            var current;
            while ( (current = node[CURRENT_STYLE]) &amp;&amp; current[att] == 'inherit') { // NOTE: assignment in test
                node = node[PARENT_NODE];
            }
            return (current) ? current[att] : VISIBLE;
        },

        /**
        * @method getColor
        * @description Get the color of an element
        * @param {HTMLElement} node The element to check
        * @param {String} att The attribute to check
        * @return {String} The value
        */
        getColor: function(node, att) {
            return Y.Dom.Color.toRGB(node[CURRENT_STYLE][att]) || TRANSPARENT;
        },

        /**
        * @method getBorderColor
        * @description Get the bordercolor of an element
        * @param {HTMLElement} node The element to check
        * @param {String} att The attribute to check
        * @return {String} The value
        */
        getBorderColor: function(node, att) {
            var current = node[CURRENT_STYLE],
                val = current[att] || current.color;
            return Y.Dom.Color.toRGB(Y.Dom.Color.toHex(val));
        }

    },

//fontSize: getPixelFont,
    IEComputed = {};

IEComputed.top = IEComputed.right = IEComputed.bottom = IEComputed.left = 
        IEComputed[WIDTH] = IEComputed[HEIGHT] = ComputedStyle.getOffset;

IEComputed.color = ComputedStyle.getColor;

IEComputed[BORDER_TOP_WIDTH] = IEComputed[BORDER_RIGHT_WIDTH] =
        IEComputed[BORDER_BOTTOM_WIDTH] = IEComputed[BORDER_LEFT_WIDTH] =
        ComputedStyle.getBorderWidth;

IEComputed.marginTop = IEComputed.marginRight = IEComputed.marginBottom =
        IEComputed.marginLeft = ComputedStyle.getMargin;

IEComputed.visibility = ComputedStyle.getVisibility;
IEComputed.borderColor = IEComputed.borderTopColor =
        IEComputed.borderRightColor = IEComputed.borderBottomColor =
        IEComputed.borderLeftColor = ComputedStyle.getBorderColor;

Y.Dom.IE_COMPUTED = IEComputed;
Y.Dom.IE_ComputedStyle = ComputedStyle;
})();
(function() {
/**
 * Add style management functionality to DOM.
 * @module dom
 * @class Color
 * @namespace YAHOO.util.Dom
 */

var TO_STRING = 'toString',
    PARSE_INT = parseInt,
    RE = RegExp,
    Y = YAHOO.util;

Y.Dom.Color = {
    /**
    * @property KEYWORDS
    * @type Object
    * @description Color keywords used when converting to Hex
    */
    KEYWORDS: {
        black: '000',
        silver: 'c0c0c0',
        gray: '808080',
        white: 'fff',
        maroon: '800000',
        red: 'f00',
        purple: '800080',
        fuchsia: 'f0f',
        green: '008000',
        lime: '0f0',
        olive: '808000',
        yellow: 'ff0',
        navy: '000080',
        blue: '00f',
        teal: '008080',
        aqua: '0ff'
    },
    /**
    * @property re_RGB
    * @private
    * @type Regex
    * @description Regex to parse rgb(0,0,0) formatted strings
    */
    re_RGB: /^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i,
    /**
    * @property re_hex
    * @private
    * @type Regex
    * @description Regex to parse #123456 formatted strings
    */
    re_hex: /^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i,
    /**
    * @property re_hex3
    * @private
    * @type Regex
    * @description Regex to parse #123 formatted strings
    */
    re_hex3: /([0-9A-F])/gi,
    /**
    * @method toRGB
    * @description Converts a hex or color string to an rgb string: rgb(0,0,0)
    * @param {String} val The string to convert to RGB notation.
    * @returns {String} The converted string
    */
    toRGB: function(val) {
        if (!Y.Dom.Color.re_RGB.test(val)) {
            val = Y.Dom.Color.toHex(val);
        }

        if(Y.Dom.Color.re_hex.exec(val)) {
            val = 'rgb(' + [
                PARSE_INT(RE.$1, 16),
                PARSE_INT(RE.$2, 16),
                PARSE_INT(RE.$3, 16)
            ].join(', ') + ')';
        }
        return val;
    },
    /**
    * @method toHex
    * @description Converts an rgb or color string to a hex string: #123456
    * @param {String} val The string to convert to hex notation.
    * @returns {String} The converted string
    */
    toHex: function(val) {
        val = Y.Dom.Color.KEYWORDS[val] || val;
        if (Y.Dom.Color.re_RGB.exec(val)) {
            val = [
                Number(RE.$1).toString(16),
                Number(RE.$2).toString(16),
                Number(RE.$3).toString(16)
            ];

            for (var i = 0; i &lt; val.length; i++) {
                if (val[i].length &lt; 2) {
                    val[i] = '0' + val[i];
                }
            }

            val = val.join('');
        }

        if (val.length &lt; 6) {
            val = val.replace(Y.Dom.Color.re_hex3, '$1$1');
        }

        if (val !== 'transparent' &amp;&amp; val.indexOf('#') &lt; 0) {
            val = '#' + val;
        }

        return val.toUpperCase();
    }
};
}());
YAHOO.register(&quot;dom&quot;, YAHOO.util.Dom, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * The Connection Manager provides a simplified interface to the XMLHttpRequest
 * object.  It handles cross-browser instantiantion of XMLHttpRequest, negotiates the
 * interactive states and server response, returning the results to a pre-defined
 * callback you create.
 *
 * @namespace YAHOO.util
 * @module connection
 * @requires yahoo
 * @requires event
 */

/**
 * The Connection Manager singleton provides methods for creating and managing
 * asynchronous transactions.
 *
 * @class YAHOO.util.Connect
 */

YAHOO.util.Connect =
{
  /**
   * @description Array of MSFT ActiveX ids for XMLHttpRequest.
   * @property _msxml_progid
   * @private
   * @static
   * @type array
   */
    _msxml_progid:[
        'Microsoft.XMLHTTP',
        'MSXML2.XMLHTTP.3.0',
        'MSXML2.XMLHTTP'
        ],

  /**
   * @description Object literal of HTTP header(s)
   * @property _http_header
   * @private
   * @static
   * @type object
   */
    _http_headers:{},

  /**
   * @description Determines if HTTP headers are set.
   * @property _has_http_headers
   * @private
   * @static
   * @type boolean
   */
    _has_http_headers:false,

 /**
  * @description Determines if a default header of
  * Content-Type of 'application/x-www-form-urlencoded'
  * will be added to any client HTTP headers sent for POST
  * transactions.
  * @property _use_default_post_header
  * @private
  * @static
  * @type boolean
  */
    _use_default_post_header:true,

 /**
  * @description The default header used for POST transactions.
  * @property _default_post_header
  * @private
  * @static
  * @type boolean
  */
    _default_post_header:'application/x-www-form-urlencoded; charset=UTF-8',

 /**
  * @description The default header used for transactions involving the
  * use of HTML forms.
  * @property _default_form_header
  * @private
  * @static
  * @type boolean
  */
    _default_form_header:'application/x-www-form-urlencoded',

 /**
  * @description Determines if a default header of
  * 'X-Requested-With: XMLHttpRequest'
  * will be added to each transaction.
  * @property _use_default_xhr_header
  * @private
  * @static
  * @type boolean
  */
    _use_default_xhr_header:true,

 /**
  * @description The default header value for the label
  * &quot;X-Requested-With&quot;.  This is sent with each
  * transaction, by default, to identify the
  * request as being made by YUI Connection Manager.
  * @property _default_xhr_header
  * @private
  * @static
  * @type boolean
  */
    _default_xhr_header:'XMLHttpRequest',

 /**
  * @description Determines if custom, default headers
  * are set for each transaction.
  * @property _has_default_header
  * @private
  * @static
  * @type boolean
  */
    _has_default_headers:true,

 /**
   * @description Property modified by setForm() to determine if the data
   * should be submitted as an HTML form.
   * @property _isFormSubmit
   * @private
   * @static
   * @type boolean
   */
	_isFormSubmit:false,

 /**
  * @description Determines if custom, default headers
  * are set for each transaction.
  * @property _has_default_header
  * @private
  * @static
  * @type boolean
  */
    _default_headers:{},

 /**
  * @description Collection of polling references to the polling mechanism in handleReadyState.
  * @property _poll
  * @private
  * @static
  * @type object
  */
    _poll:{},

 /**
  * @description Queue of timeout values for each transaction callback with a defined timeout value.
  * @property _timeOut
  * @private
  * @static
  * @type object
  */
    _timeOut:{},

  /**
   * @description The polling frequency, in milliseconds, for HandleReadyState.
   * when attempting to determine a transaction's XHR readyState.
   * The default is 50 milliseconds.
   * @property _polling_interval
   * @private
   * @static
   * @type int
   */
     _polling_interval:50,

  /**
   * @description A transaction counter that increments the transaction id for each transaction.
   * @property _transaction_id
   * @private
   * @static
   * @type int
   */
     _transaction_id:0,

  /**
   * @description Custom event that fires at the start of a transaction
   * @property startEvent
   * @private
   * @static
   * @type CustomEvent
   */
    startEvent: new YAHOO.util.CustomEvent('start'),

  /**
   * @description Custom event that fires when a transaction response has completed.
   * @property completeEvent
   * @private
   * @static
   * @type CustomEvent
   */
    completeEvent: new YAHOO.util.CustomEvent('complete'),

  /**
   * @description Custom event that fires when handleTransactionResponse() determines a
   * response in the HTTP 2xx range.
   * @property successEvent
   * @private
   * @static
   * @type CustomEvent
   */
    successEvent: new YAHOO.util.CustomEvent('success'),

  /**
   * @description Custom event that fires when handleTransactionResponse() determines a
   * response in the HTTP 4xx/5xx range.
   * @property failureEvent
   * @private
   * @static
   * @type CustomEvent
   */
    failureEvent: new YAHOO.util.CustomEvent('failure'),

  /**
   * @description Custom event that fires when a transaction is successfully aborted.
   * @property abortEvent
   * @private
   * @static
   * @type CustomEvent
   */
    abortEvent: new YAHOO.util.CustomEvent('abort'),

  /**
   * @description A reference table that maps callback custom events members to its specific
   * event name.
   * @property _customEvents
   * @private
   * @static
   * @type object
   */
    _customEvents:
    {
        onStart:['startEvent', 'start'],
        onComplete:['completeEvent', 'complete'],
        onSuccess:['successEvent', 'success'],
        onFailure:['failureEvent', 'failure'],
        onUpload:['uploadEvent', 'upload'],
        onAbort:['abortEvent', 'abort']
    },

  /**
   * @description Member to add an ActiveX id to the existing xml_progid array.
   * In the event(unlikely) a new ActiveX id is introduced, it can be added
   * without internal code modifications.
   * @method setProgId
   * @public
   * @static
   * @param {string} id The ActiveX id to be added to initialize the XHR object.
   * @return void
   */
    setProgId:function(id)
    {
        this._msxml_progid.unshift(id);
        YAHOO.log('ActiveX Program Id  ' + id + ' added to _msxml_progid.', 'info', 'Connection');
    },

  /**
   * @description Member to override the default POST header.
   * @method setDefaultPostHeader
   * @public
   * @static
   * @param {boolean} b Set and use default header - true or false .
   * @return void
   */
    setDefaultPostHeader:function(b)
    {
        if(typeof b == 'string'){
            this._default_post_header = b;
			this._use_default_post_header = true;

            YAHOO.log('Default POST header set to  ' + b, 'info', 'Connection');
        }
        else if(typeof b == 'boolean'){
            this._use_default_post_header = b;
        }
    },

  /**
   * @description Member to override the default transaction header..
   * @method setDefaultXhrHeader
   * @public
   * @static
   * @param {boolean} b Set and use default header - true or false .
   * @return void
   */
    setDefaultXhrHeader:function(b)
    {
        if(typeof b == 'string'){
            this._default_xhr_header = b;
            YAHOO.log('Default XHR header set to  ' + b, 'info', 'Connection');
        }
        else{
            this._use_default_xhr_header = b;
        }
    },

  /**
   * @description Member to modify the default polling interval.
   * @method setPollingInterval
   * @public
   * @static
   * @param {int} i The polling interval in milliseconds.
   * @return void
   */
    setPollingInterval:function(i)
    {
        if(typeof i == 'number' &amp;&amp; isFinite(i)){
            this._polling_interval = i;
            YAHOO.log('Default polling interval set to ' + i +'ms', 'info', 'Connection');
        }
    },

  /**
   * @description Instantiates a XMLHttpRequest object and returns an object with two properties:
   * the XMLHttpRequest instance and the transaction id.
   * @method createXhrObject
   * @private
   * @static
   * @param {int} transactionId Property containing the transaction id for this transaction.
   * @return object
   */
    createXhrObject:function(transactionId)
    {
        var obj,http,i;
        try
        {
            // Instantiates XMLHttpRequest in non-IE browsers and assigns to http.
            http = new XMLHttpRequest();
            //  Object literal with http and tId properties
            obj = { conn:http, tId:transactionId, xhr: true };
            YAHOO.log('XHR object created for transaction ' + transactionId, 'info', 'Connection');
        }
        catch(e)
        {
            for(i=0; i&lt;this._msxml_progid.length; ++i){
                try
                {
                    // Instantiates XMLHttpRequest for IE and assign to http
                    http = new ActiveXObject(this._msxml_progid[i]);
                    //  Object literal with conn and tId properties
                    obj = { conn:http, tId:transactionId, xhr: true };
                    YAHOO.log('ActiveX XHR object created for transaction ' + transactionId, 'info', 'Connection');
                    break;
                }
                catch(e1){}
            }
        }
        finally
        {
            return obj;
        }
    },

  /**
   * @description This method is called by asyncRequest to create a
   * valid connection object for the transaction.  It also passes a
   * transaction id and increments the transaction id counter.
   * @method getConnectionObject
   * @private
   * @static
   * @return {object}
   */
    getConnectionObject:function(t)
    {
        var o, tId = this._transaction_id;

        try
        {
            if(!t){
                o = this.createXhrObject(tId);
            }
            else{
                o = {tId:tId};
                if(t==='xdr'){
                    o.conn = this._transport;
                    o.xdr = true;
                }
                else if(t==='upload'){
                    o.upload = true;
                }
            }

            if(o){
                this._transaction_id++;
            }
        }
        catch(e){}
        return o;
    },

  /**
   * @description Method for initiating an asynchronous request via the XHR object.
   * @method asyncRequest
   * @public
   * @static
   * @param {string} method HTTP transaction method
   * @param {string} uri Fully qualified path of resource
   * @param {callback} callback User-defined callback function or object
   * @param {string} postData POST body
   * @return {object} Returns the connection object
   */
    asyncRequest:function(method, uri, callback, postData)
    {
        var args = callback&amp;&amp;callback.argument?callback.argument:null,
            YCM = this,
            o, t;

        if(this._isFileUpload){
            t = 'upload';
        }
        else if(callback &amp;&amp; callback.xdr){
            t = 'xdr';
        }

        o = this.getConnectionObject(t);
        if(!o){
            YAHOO.log('Unable to create connection object.', 'error', 'Connection');
            return null;
        }
        else{

            // Intialize any transaction-specific custom events, if provided.
            if(callback &amp;&amp; callback.customevents){
                this.initCustomEvents(o, callback);
            }

            if(this._isFormSubmit){
                if(this._isFileUpload){
                    window.setTimeout(function(){YCM.uploadFile(o, callback, uri, postData);}, 10);
                    return o;
                }

                // If the specified HTTP method is GET, setForm() will return an
                // encoded string that is concatenated to the uri to
                // create a querystring.
                if(method.toUpperCase() == 'GET'){
                    if(this._sFormData.length !== 0){
                        // If the URI already contains a querystring, append an ampersand
                        // and then concatenate _sFormData to the URI.
                        uri += ((uri.indexOf('?') == -1)?'?':'&amp;') + this._sFormData;
                    }
                }
                else if(method.toUpperCase() == 'POST'){
                    // If POST data exist in addition to the HTML form data,
                    // it will be concatenated to the form data.
                    postData = postData?this._sFormData + &quot;&amp;&quot; + postData:this._sFormData;
                }
            }

            if(method.toUpperCase() == 'GET' &amp;&amp; (callback &amp;&amp; callback.cache === false)){
                // If callback.cache is defined and set to false, a
                // timestamp value will be added to the querystring.
                uri += ((uri.indexOf('?') == -1)?'?':'&amp;') + &quot;rnd=&quot; + new Date().valueOf().toString();
            }

            // Each transaction will automatically include a custom header of
            // &quot;X-Requested-With: XMLHttpRequest&quot; to identify the request as
            // having originated from Connection Manager.
            if(this._use_default_xhr_header){
                if(!this._default_headers['X-Requested-With']){
                    this.initHeader('X-Requested-With', this._default_xhr_header, true);
                    YAHOO.log('Initialize transaction header X-Request-Header to XMLHttpRequest.', 'info', 'Connection');
                }
            }

            //If the transaction method is POST and the POST header value is set to true
            //or a custom value, initalize the Content-Type header to this value.
            if((method.toUpperCase() === 'POST' &amp;&amp; this._use_default_post_header) &amp;&amp; this._isFormSubmit === false){
                this.initHeader('Content-Type', this._default_post_header);
                YAHOO.log('Initialize header Content-Type to application/x-www-form-urlencoded; UTF-8 for POST transaction.', 'info', 'Connection');
            }

            if(o.xdr){
                this.xdr(o, method, uri, callback, postData);
                return o;
            }

            o.conn.open(method, uri, true);
            //Initialize all default and custom HTTP headers,
            if(this._has_default_headers || this._has_http_headers){
                this.setHeader(o);
            }

            this.handleReadyState(o, callback);
            o.conn.send(postData || '');
            YAHOO.log('Transaction ' + o.tId + ' sent.', 'info', 'Connection');

            // Reset the HTML form data and state properties as
            // soon as the data are submitted.
            if(this._isFormSubmit === true){
                this.resetFormState();
            }

            // Fire global custom event -- startEvent
            this.startEvent.fire(o, args);

            if(o.startEvent){
                // Fire transaction custom event -- startEvent
                o.startEvent.fire(o, args);
            }

            return o;
        }
    },

  /**
   * @description This method creates and subscribes custom events,
   * specific to each transaction
   * @method initCustomEvents
   * @private
   * @static
   * @param {object} o The connection object
   * @param {callback} callback The user-defined callback object
   * @return {void}
   */
    initCustomEvents:function(o, callback)
    {
        var prop;
        // Enumerate through callback.customevents members and bind/subscribe
        // events that match in the _customEvents table.
        for(prop in callback.customevents){
            if(this._customEvents[prop][0]){
                // Create the custom event
                o[this._customEvents[prop][0]] = new YAHOO.util.CustomEvent(this._customEvents[prop][1], (callback.scope)?callback.scope:null);
                YAHOO.log('Transaction-specific Custom Event ' + o[this._customEvents[prop][1]] + ' created.', 'info', 'Connection');

                // Subscribe the custom event
                o[this._customEvents[prop][0]].subscribe(callback.customevents[prop]);
                YAHOO.log('Transaction-specific Custom Event ' + o[this._customEvents[prop][1]] + ' subscribed.', 'info', 'Connection');
            }
        }
    },

  /**
   * @description This method serves as a timer that polls the XHR object's readyState
   * property during a transaction, instead of binding a callback to the
   * onreadystatechange event.  Upon readyState 4, handleTransactionResponse
   * will process the response, and the timer will be cleared.
   * @method handleReadyState
   * @private
   * @static
   * @param {object} o The connection object
   * @param {callback} callback The user-defined callback object
   * @return {void}
   */

    handleReadyState:function(o, callback)

    {
        var oConn = this,
            args = (callback &amp;&amp; callback.argument)?callback.argument:null;

        if(callback &amp;&amp; callback.timeout){
            this._timeOut[o.tId] = window.setTimeout(function(){ oConn.abort(o, callback, true); }, callback.timeout);
        }

        this._poll[o.tId] = window.setInterval(
            function(){
                if(o.conn &amp;&amp; o.conn.readyState === 4){

                    // Clear the polling interval for the transaction
                    // and remove the reference from _poll.
                    window.clearInterval(oConn._poll[o.tId]);
                    delete oConn._poll[o.tId];

                    if(callback &amp;&amp; callback.timeout){
                        window.clearTimeout(oConn._timeOut[o.tId]);
                        delete oConn._timeOut[o.tId];
                    }

                    // Fire global custom event -- completeEvent
                    oConn.completeEvent.fire(o, args);

                    if(o.completeEvent){
                        // Fire transaction custom event -- completeEvent
                        o.completeEvent.fire(o, args);
                    }

                    oConn.handleTransactionResponse(o, callback);
                }
            }
        ,this._polling_interval);
    },

  /**
   * @description This method attempts to interpret the server response and
   * determine whether the transaction was successful, or if an error or
   * exception was encountered.
   * @method handleTransactionResponse
   * @private
   * @static
   * @param {object} o The connection object
   * @param {object} callback The user-defined callback object
   * @param {boolean} isAbort Determines if the transaction was terminated via abort().
   * @return {void}
   */
    handleTransactionResponse:function(o, callback, isAbort)
    {
        var httpStatus, responseObject,
            args = (callback &amp;&amp; callback.argument)?callback.argument:null,
            xdrS = (o.r &amp;&amp; o.r.statusText === 'xdr:success')?true:false,
            xdrF = (o.r &amp;&amp; o.r.statusText === 'xdr:failure')?true:false,
            xdrA = isAbort;

        try
        {
            if((o.conn.status !== undefined &amp;&amp; o.conn.status !== 0) || xdrS){
                // XDR requests will not have HTTP status defined. The
                // statusText property will define the response status
                // set by the Flash transport.
                httpStatus = o.conn.status;
            }
            else if(xdrF &amp;&amp; !xdrA){
                // Set XDR transaction failure to a status of 0, which
                // resolves as an HTTP failure, instead of an exception.
                httpStatus = 0;
            }
            else{
                httpStatus = 13030;
            }
        }
        catch(e){

             // 13030 is a custom code to indicate the condition -- in Mozilla/FF --
             // when the XHR object's status and statusText properties are
             // unavailable, and a query attempt throws an exception.
            httpStatus = 13030;
        }

        if((httpStatus &gt;= 200 &amp;&amp; httpStatus &lt; 300) || httpStatus === 1223 || xdrS){
            responseObject = o.xdr ? o.r : this.createResponseObject(o, args);
            if(callback &amp;&amp; callback.success){
                if(!callback.scope){
                    callback.success(responseObject);
                    YAHOO.log('Success callback. HTTP code is ' + httpStatus, 'info', 'Connection');
                }
                else{
                    // If a scope property is defined, the callback will be fired from
                    // the context of the object.
                    callback.success.apply(callback.scope, [responseObject]);
                    YAHOO.log('Success callback with scope. HTTP code is ' + httpStatus, 'info', 'Connection');
                }
            }

            // Fire global custom event -- successEvent
            this.successEvent.fire(responseObject);

            if(o.successEvent){
                // Fire transaction custom event -- successEvent
                o.successEvent.fire(responseObject);
            }
        }
        else{
            switch(httpStatus){
                // The following cases are wininet.dll error codes that may be encountered.
                case 12002: // Server timeout
                case 12029: // 12029 to 12031 correspond to dropped connections.
                case 12030:
                case 12031:
                case 12152: // Connection closed by server.
                case 13030: // See above comments for variable status.
                    // XDR transactions will not resolve to this case, since the
                    // response object is already built in the xdr response.
                    responseObject = this.createExceptionObject(o.tId, args, (isAbort?isAbort:false));
                    if(callback &amp;&amp; callback.failure){
                        if(!callback.scope){
                            callback.failure(responseObject);
                            YAHOO.log('Failure callback. Exception detected. Status code is ' + httpStatus, 'warn', 'Connection');
                        }
                        else{
                            callback.failure.apply(callback.scope, [responseObject]);
                            YAHOO.log('Failure callback with scope. Exception detected. Status code is ' + httpStatus, 'warn', 'Connection');
                        }
                    }

                    break;
                default:
                    responseObject = (o.xdr) ? o.response : this.createResponseObject(o, args);
                    if(callback &amp;&amp; callback.failure){
                        if(!callback.scope){
                            callback.failure(responseObject);
                            YAHOO.log('Failure callback. HTTP status code is ' + httpStatus, 'warn', 'Connection');
                        }
                        else{
                            callback.failure.apply(callback.scope, [responseObject]);
                            YAHOO.log('Failure callback with scope. HTTP status code is ' + httpStatus, 'warn', 'Connection');
                        }
                    }
            }

            // Fire global custom event -- failureEvent
            this.failureEvent.fire(responseObject);

            if(o.failureEvent){
                // Fire transaction custom event -- failureEvent
                o.failureEvent.fire(responseObject);
            }

        }

        this.releaseObject(o);
        responseObject = null;
    },

  /**
   * @description This method evaluates the server response, creates and returns the results via
   * its properties.  Success and failure cases will differ in the response
   * object's property values.
   * @method createResponseObject
   * @private
   * @static
   * @param {object} o The connection object
   * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
   * @return {object}
   */
    createResponseObject:function(o, callbackArg)
    {
        var obj = {}, headerObj = {},
            i, headerStr, header, delimitPos;

        try
        {
            headerStr = o.conn.getAllResponseHeaders();
            header = headerStr.split('\n');
            for(i=0; i&lt;header.length; i++){
                delimitPos = header[i].indexOf(':');
                if(delimitPos != -1){
                    headerObj[header[i].substring(0,delimitPos)] = YAHOO.lang.trim(header[i].substring(delimitPos+2));
                }
            }
        }
        catch(e){}

        obj.tId = o.tId;
        // Normalize IE's response to HTTP 204 when Win error 1223.
        obj.status = (o.conn.status == 1223)?204:o.conn.status;
        // Normalize IE's statusText to &quot;No Content&quot; instead of &quot;Unknown&quot;.
        obj.statusText = (o.conn.status == 1223)?&quot;No Content&quot;:o.conn.statusText;
        obj.getResponseHeader = headerObj;
        obj.getAllResponseHeaders = headerStr;
        obj.responseText = o.conn.responseText;
        obj.responseXML = o.conn.responseXML;

        if(callbackArg){
            obj.argument = callbackArg;
        }

        return obj;
    },

  /**
   * @description If a transaction cannot be completed due to dropped or closed connections,
   * there may be not be enough information to build a full response object.
   * The failure callback will be fired and this specific condition can be identified
   * by a status property value of 0.
   *
   * If an abort was successful, the status property will report a value of -1.
   *
   * @method createExceptionObject
   * @private
   * @static
   * @param {int} tId The Transaction Id
   * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
   * @param {boolean} isAbort Determines if the exception case is caused by a transaction abort
   * @return {object}
   */
    createExceptionObject:function(tId, callbackArg, isAbort)
    {
        var COMM_CODE = 0,
            COMM_ERROR = 'communication failure',
            ABORT_CODE = -1,
            ABORT_ERROR = 'transaction aborted',
            obj = {};

        obj.tId = tId;
        if(isAbort){
            obj.status = ABORT_CODE;
            obj.statusText = ABORT_ERROR;
        }
        else{
            obj.status = COMM_CODE;
            obj.statusText = COMM_ERROR;
        }

        if(callbackArg){
            obj.argument = callbackArg;
        }

        return obj;
    },

  /**
   * @description Method that initializes the custom HTTP headers for the each transaction.
   * @method initHeader
   * @public
   * @static
   * @param {string} label The HTTP header label
   * @param {string} value The HTTP header value
   * @param {string} isDefault Determines if the specific header is a default header
   * automatically sent with each transaction.
   * @return {void}
   */
    initHeader:function(label, value, isDefault)
    {
        var headerObj = (isDefault)?this._default_headers:this._http_headers;

        headerObj[label] = value;
        if(isDefault){
            this._has_default_headers = true;
        }
        else{
            this._has_http_headers = true;
        }
    },


  /**
   * @description Accessor that sets the HTTP headers for each transaction.
   * @method setHeader
   * @private
   * @static
   * @param {object} o The connection object for the transaction.
   * @return {void}
   */
    setHeader:function(o)
    {
        var prop;
        if(this._has_default_headers){
            for(prop in this._default_headers){
                if(YAHOO.lang.hasOwnProperty(this._default_headers, prop)){
                    o.conn.setRequestHeader(prop, this._default_headers[prop]);
                    YAHOO.log('Default HTTP header ' + prop + ' set with value of ' + this._default_headers[prop], 'info', 'Connection');
                }
            }
        }

        if(this._has_http_headers){
            for(prop in this._http_headers){
                if(YAHOO.lang.hasOwnProperty(this._http_headers, prop)){
                    o.conn.setRequestHeader(prop, this._http_headers[prop]);
                    YAHOO.log('HTTP header ' + prop + ' set with value of ' + this._http_headers[prop], 'info', 'Connection');
                }
            }

            this._http_headers = {};
            this._has_http_headers = false;
        }
    },

  /**
   * @description Resets the default HTTP headers object
   * @method resetDefaultHeaders
   * @public
   * @static
   * @return {void}
   */
    resetDefaultHeaders:function(){
        this._default_headers = {};
        this._has_default_headers = false;
    },

  /**
   * @description Method to terminate a transaction, if it has not reached readyState 4.
   * @method abort
   * @public
   * @static
   * @param {object} o The connection object returned by asyncRequest.
   * @param {object} callback  User-defined callback object.
   * @param {string} isTimeout boolean to indicate if abort resulted from a callback timeout.
   * @return {boolean}
   */
    abort:function(o, callback, isTimeout)
    {
        var abortStatus,
            args = (callback &amp;&amp; callback.argument)?callback.argument:null;
            o = o || {};

        if(o.conn){
            if(o.xhr){
                if(this.isCallInProgress(o)){
                    // Issue abort request
                    o.conn.abort();

                    window.clearInterval(this._poll[o.tId]);
                    delete this._poll[o.tId];

                    if(isTimeout){
                        window.clearTimeout(this._timeOut[o.tId]);
                        delete this._timeOut[o.tId];
                    }

                    abortStatus = true;
                }
            }
            else if(o.xdr){
                o.conn.abort(o.tId);
                abortStatus = true;
            }
        }
        else if(o.upload){
            var frameId = 'yuiIO' + o.tId;
            var io = document.getElementById(frameId);

            if(io){
                // Remove all listeners on the iframe prior to
                // its destruction.
                YAHOO.util.Event.removeListener(io, &quot;load&quot;);
                // Destroy the iframe facilitating the transaction.
                document.body.removeChild(io);
                YAHOO.log('File upload iframe destroyed. Id is:' + frameId, 'info', 'Connection');

                if(isTimeout){
                    window.clearTimeout(this._timeOut[o.tId]);
                    delete this._timeOut[o.tId];
                }

                abortStatus = true;
            }
        }
        else{
            abortStatus = false;
        }

        if(abortStatus === true){
            // Fire global custom event -- abortEvent
            this.abortEvent.fire(o, args);

            if(o.abortEvent){
                // Fire transaction custom event -- abortEvent
                o.abortEvent.fire(o, args);
            }

            this.handleTransactionResponse(o, callback, true);
            YAHOO.log('Transaction ' + o.tId + ' aborted.', 'info', 'Connection');
        }

        return abortStatus;
    },

  /**
   * @description Determines if the transaction is still being processed.
   * @method isCallInProgress
   * @public
   * @static
   * @param {object} o The connection object returned by asyncRequest
   * @return {boolean}
   */
    isCallInProgress:function(o)
    {
        o = o || {};
        // if the XHR object assigned to the transaction has not been dereferenced,
        // then check its readyState status.  Otherwise, return false.
        if(o.xhr &amp;&amp; o.conn){
            return o.conn.readyState !== 4 &amp;&amp; o.conn.readyState !== 0;
        }
        else if(o.xdr &amp;&amp; o.conn){
            return o.conn.isCallInProgress(o.tId);
        }
        else if(o.upload === true){
            return document.getElementById('yuiIO' + o.tId)?true:false;
        }
        else{
            return false;
        }
    },

  /**
   * @description Dereference the XHR instance and the connection object after the transaction is completed.
   * @method releaseObject
   * @private
   * @static
   * @param {object} o The connection object
   * @return {void}
   */
    releaseObject:function(o)
    {
        if(o &amp;&amp; o.conn){
            //dereference the XHR instance.
            o.conn = null;

            YAHOO.log('Connection object for transaction ' + o.tId + ' destroyed.', 'info', 'Connection');

            //dereference the connection object.
            o = null;
        }
    }
};

/**
  * @for YAHOO.util.Connect
  */
(function() {
	var YCM = YAHOO.util.Connect, _fn = {};

   /**
    * @description This method creates and instantiates the Flash transport.
    * @method _swf
    * @private
    * @static
    * @param {string} URI to connection.swf.
    * @return {void}
    */
	function _swf(uri) {
		var o = '&lt;object id=&quot;YUIConnectionSwf&quot; type=&quot;application/x-shockwave-flash&quot; data=&quot;' +
				uri + '&quot; width=&quot;0&quot; height=&quot;0&quot;&gt;' +
				'&lt;param name=&quot;movie&quot; value=&quot;' + uri + '&quot;&gt;' +
				'&lt;param name=&quot;allowScriptAccess&quot; value=&quot;always&quot;&gt;' +
				'&lt;/object&gt;',
		    c = document.createElement('div');

		document.body.appendChild(c);
		c.innerHTML = o;
	}

   /**
    * @description This method calls the public method on the
    * Flash transport to start the XDR transaction.  It is analogous
    * to Connection Manager's asyncRequest method.
    * @method xdr
    * @private
    * @static
    * @param {object} The transaction object.
    * @param {string} HTTP request method.
    * @param {string} URI for the transaction.
    * @param {object} The transaction's callback object.
    * @param {object} The JSON object used as HTTP POST data.
    * @return {void}
    */
	function _xdr(o, m, u, c, d) {
		_fn[parseInt(o.tId)] = { 'o':o, 'c':c };
		if (d) {
			c.method = m;
			c.data = d;
		}

		o.conn.send(u, c, o.tId);
	}

   /**
    * @description This method instantiates the Flash transport and
    * establishes a static reference to it, used for all XDR requests.
    * @method transport
    * @public
    * @static
    * @param {string} URI to connection.swf.
    * @return {void}
    */
	function _init(uri) {
		_swf(uri);
		YCM._transport = document.getElementById('YUIConnectionSwf');
	}

	function _xdrReady() {
		YCM.xdrReadyEvent.fire();
	}

   /**
    * @description This method fires the global and transaction start
    * events.
    * @method _xdrStart
    * @private
    * @static
    * @param {object} The transaction object.
    * @param {string} The transaction's callback object.
    * @return {void}
    */
	function _xdrStart(o, cb) {
		if (o) {
			// Fire global custom event -- startEvent
			YCM.startEvent.fire(o, cb.argument);

			if(o.startEvent){
				// Fire transaction custom event -- startEvent
				o.startEvent.fire(o, cb.argument);
			}
		}
	}

   /**
    * @description This method is the initial response handler
    * for XDR transactions.  The Flash transport calls this
    * function and sends the response payload.
    * @method handleXdrResponse
    * @private
    * @static
    * @param {object} The response object sent from the Flash transport.
    * @return {void}
    */
	function _handleXdrResponse(r) {
		var o = _fn[r.tId].o,
			cb = _fn[r.tId].c;

		if (r.statusText === 'xdr:start') {
			_xdrStart(o, cb);
			return;
		}

		r.responseText = decodeURI(r.responseText);
		o.r = r;
		if (cb.argument) {
			o.r.argument = cb.argument;
		}

		this.handleTransactionResponse(o, cb, r.statusText === 'xdr:abort' ? true : false);
		delete _fn[r.tId];
	}

	// Bind the functions to Connection Manager as static fields.
	YCM.xdr = _xdr;
	YCM.swf = _swf;
	YCM.transport = _init;
	YCM.xdrReadyEvent = new YAHOO.util.CustomEvent('xdrReady');
	YCM.xdrReady = _xdrReady;
	YCM.handleXdrResponse = _handleXdrResponse;
})();

/**
  * @for YAHOO.util.Connect
  */
(function(){
	var YCM = YAHOO.util.Connect,
		YE = YAHOO.util.Event,
		dM = document.documentMode ? document.documentMode : false;

   /**
	* @description Property modified by setForm() to determine if a file(s)
	* upload is expected.
	* @property _isFileUpload
	* @private
	* @static
	* @type boolean
	*/
	YCM._isFileUpload = false;

   /**
	* @description Property modified by setForm() to set a reference to the HTML
	* form node if the desired action is file upload.
	* @property _formNode
	* @private
	* @static
	* @type object
	*/
	YCM._formNode = null;

   /**
	* @description Property modified by setForm() to set the HTML form data
	* for each transaction.
	* @property _sFormData
	* @private
	* @static
	* @type string
	*/
	YCM._sFormData = null;

   /**
	* @description Tracks the name-value pair of the &quot;clicked&quot; submit button if multiple submit
	* buttons are present in an HTML form; and, if YAHOO.util.Event is available.
	* @property _submitElementValue
	* @private
	* @static
	* @type string
	*/
	YCM._submitElementValue = null;

   /**
    * @description Custom event that fires when handleTransactionResponse() determines a
    * response in the HTTP 4xx/5xx range.
    * @property failureEvent
    * @private
    * @static
    * @type CustomEvent
    */
	YCM.uploadEvent = new YAHOO.util.CustomEvent('upload');

   /**
	* @description Determines whether YAHOO.util.Event is available and returns true or false.
	* If true, an event listener is bound at the document level to trap click events that
	* resolve to a target type of &quot;Submit&quot;.  This listener will enable setForm() to determine
	* the clicked &quot;Submit&quot; value in a multi-Submit button, HTML form.
	* @property _hasSubmitListener
	* @private
	* @static
	*/
	YCM._hasSubmitListener = function() {
		if(YE){
			YE.addListener(
				document,
				'click',
				function(e){
					var obj = YE.getTarget(e),
						name = obj.nodeName.toLowerCase();

					if((name === 'input' || name === 'button') &amp;&amp; (obj.type &amp;&amp; obj.type.toLowerCase() == 'submit')){
						YCM._submitElementValue = encodeURIComponent(obj.name) + &quot;=&quot; + encodeURIComponent(obj.value);
					}
				});
			return true;
		}
		return false;
	}();

  /**
   * @description This method assembles the form label and value pairs and
   * constructs an encoded string.
   * asyncRequest() will automatically initialize the transaction with a
   * a HTTP header Content-Type of application/x-www-form-urlencoded.
   * @method setForm
   * @public
   * @static
   * @param {string || object} form id or name attribute, or form object.
   * @param {boolean} optional enable file upload.
   * @param {boolean} optional enable file upload over SSL in IE only.
   * @return {string} string of the HTML form field name and value pairs..
   */
	function _setForm(formId, isUpload, secureUri)
	{
		var oForm, oElement, oName, oValue, oDisabled,
			hasSubmit = false,
			data = [], item = 0,
			i,len,j,jlen,opt;

		this.resetFormState();

		if(typeof formId == 'string'){
			// Determine if the argument is a form id or a form name.
			// Note form name usage is deprecated by supported
			// here for legacy reasons.
			oForm = (document.getElementById(formId) || document.forms[formId]);
		}
		else if(typeof formId == 'object'){
			// Treat argument as an HTML form object.
			oForm = formId;
		}
		else{
			YAHOO.log('Unable to create form object ' + formId, 'warn', 'Connection');
			return;
		}

		// If the isUpload argument is true, setForm will call createFrame to initialize
		// an iframe as the form target.
		//
		// The argument secureURI is also required by IE in SSL environments
		// where the secureURI string is a fully qualified HTTP path, used to set the source
		// of the iframe, to a stub resource in the same domain.
		if(isUpload){

			// Create iframe in preparation for file upload.
			this.createFrame(secureUri?secureUri:null);

			// Set form reference and file upload properties to true.
			this._isFormSubmit = true;
			this._isFileUpload = true;
			this._formNode = oForm;

			return;
		}

		// Iterate over the form elements collection to construct the
		// label-value pairs.
		for (i=0,len=oForm.elements.length; i&lt;len; ++i){
			oElement  = oForm.elements[i];
			oDisabled = oElement.disabled;
			oName     = oElement.name;

			// Do not submit fields that are disabled or
			// do not have a name attribute value.
			if(!oDisabled &amp;&amp; oName)
			{
				oName  = encodeURIComponent(oName)+'=';
				oValue = encodeURIComponent(oElement.value);

				switch(oElement.type)
				{
					// Safari, Opera, FF all default opt.value from .text if
					// value attribute not specified in markup
					case 'select-one':
						if (oElement.selectedIndex &gt; -1) {
							opt = oElement.options[oElement.selectedIndex];
							data[item++] = oName + encodeURIComponent(
								(opt.attributes.value &amp;&amp; opt.attributes.value.specified) ? opt.value : opt.text);
						}
						break;
					case 'select-multiple':
						if (oElement.selectedIndex &gt; -1) {
							for(j=oElement.selectedIndex, jlen=oElement.options.length; j&lt;jlen; ++j){
								opt = oElement.options[j];
								if (opt.selected) {
									data[item++] = oName + encodeURIComponent(
										(opt.attributes.value &amp;&amp; opt.attributes.value.specified) ? opt.value : opt.text);
								}
							}
						}
						break;
					case 'radio':
					case 'checkbox':
						if(oElement.checked){
							data[item++] = oName + oValue;
						}
						break;
					case 'file':
						// stub case as XMLHttpRequest will only send the file path as a string.
					case undefined:
						// stub case for fieldset element which returns undefined.
					case 'reset':
						// stub case for input type reset button.
					case 'button':
						// stub case for input type button elements.
						break;
					case 'submit':
						if(hasSubmit === false){
							if(this._hasSubmitListener &amp;&amp; this._submitElementValue){
								data[item++] = this._submitElementValue;
							}
							hasSubmit = true;
						}
						break;
					default:
						data[item++] = oName + oValue;
				}
			}
		}

		this._isFormSubmit = true;
		this._sFormData = data.join('&amp;');

		YAHOO.log('Form initialized for transaction. HTML form POST message is: ' + this._sFormData, 'info', 'Connection');

		this.initHeader('Content-Type', this._default_form_header);
		YAHOO.log('Initialize header Content-Type to application/x-www-form-urlencoded for setForm() transaction.', 'info', 'Connection');

		return this._sFormData;
	}

   /**
    * @description Resets HTML form properties when an HTML form or HTML form
    * with file upload transaction is sent.
    * @method resetFormState
    * @private
    * @static
    * @return {void}
    */
	function _resetFormState(){
		this._isFormSubmit = false;
		this._isFileUpload = false;
		this._formNode = null;
		this._sFormData = &quot;&quot;;
	}


   /**
    * @description Creates an iframe to be used for form file uploads.  It is remove from the
    * document upon completion of the upload transaction.
    * @method createFrame
    * @private
    * @static
    * @param {string} optional qualified path of iframe resource for SSL in IE.
    * @return {void}
    */
	function _createFrame(secureUri){

		// IE does not allow the setting of id and name attributes as object
		// properties via createElement().  A different iframe creation
		// pattern is required for IE.
		var frameId = 'yuiIO' + this._transaction_id,
			ie9 = (dM === 9) ? true : false,
			io;

		if(YAHOO.env.ua.ie &amp;&amp; !ie9){
			io = document.createElement('&lt;iframe id=&quot;' + frameId + '&quot; name=&quot;' + frameId + '&quot; /&gt;');

			// IE will throw a security exception in an SSL environment if the
			// iframe source is undefined.
			if(typeof secureUri == 'boolean'){
				io.src = 'javascript:false';
			}
		}
		else{
			io = document.createElement('iframe');
			io.id = frameId;
			io.name = frameId;
		}

		io.style.position = 'absolute';
		io.style.top = '-1000px';
		io.style.left = '-1000px';

		document.body.appendChild(io);
		YAHOO.log('File upload iframe created. Id is:' + frameId, 'info', 'Connection');
	}

   /**
    * @description Parses the POST data and creates hidden form elements
    * for each key-value, and appends them to the HTML form object.
    * @method appendPostData
    * @private
    * @static
    * @param {string} postData The HTTP POST data
    * @return {array} formElements Collection of hidden fields.
    */
	function _appendPostData(postData){
		var formElements = [],
			postMessage = postData.split('&amp;'),
			i, delimitPos;

		for(i=0; i &lt; postMessage.length; i++){
			delimitPos = postMessage[i].indexOf('=');
			if(delimitPos != -1){
				formElements[i] = document.createElement('input');
				formElements[i].type = 'hidden';
				formElements[i].name = decodeURIComponent(postMessage[i].substring(0,delimitPos));
				formElements[i].value = decodeURIComponent(postMessage[i].substring(delimitPos+1));
				this._formNode.appendChild(formElements[i]);
			}
		}

		return formElements;
	}

   /**
    * @description Uploads HTML form, inclusive of files/attachments, using the
    * iframe created in createFrame to facilitate the transaction.
    * @method uploadFile
    * @private
    * @static
    * @param {int} id The transaction id.
    * @param {object} callback User-defined callback object.
    * @param {string} uri Fully qualified path of resource.
    * @param {string} postData POST data to be submitted in addition to HTML form.
    * @return {void}
    */
	function _uploadFile(o, callback, uri, postData){
		// Each iframe has an id prefix of &quot;yuiIO&quot; followed
		// by the unique transaction id.
		var frameId = 'yuiIO' + o.tId,
		    uploadEncoding = 'multipart/form-data',
		    io = document.getElementById(frameId),
		    ie8 = (dM &gt;= 8) ? true : false,
		    oConn = this,
			args = (callback &amp;&amp; callback.argument)?callback.argument:null,
            oElements,i,prop,obj, rawFormAttributes, uploadCallback;

		// Track original HTML form attribute values.
		rawFormAttributes = {
			action:this._formNode.getAttribute('action'),
			method:this._formNode.getAttribute('method'),
			target:this._formNode.getAttribute('target')
		};

		// Initialize the HTML form properties in case they are
		// not defined in the HTML form.
		this._formNode.setAttribute('action', uri);
		this._formNode.setAttribute('method', 'POST');
		this._formNode.setAttribute('target', frameId);

		if(YAHOO.env.ua.ie &amp;&amp; !ie8){
			// IE does not respect property enctype for HTML forms.
			// Instead it uses the property - &quot;encoding&quot;.
			this._formNode.setAttribute('encoding', uploadEncoding);
		}
		else{
			this._formNode.setAttribute('enctype', uploadEncoding);
		}

		if(postData){
			oElements = this.appendPostData(postData);
		}

		// Start file upload.
		this._formNode.submit();

		// Fire global custom event -- startEvent
		this.startEvent.fire(o, args);

		if(o.startEvent){
			// Fire transaction custom event -- startEvent
			o.startEvent.fire(o, args);
		}

		// Start polling if a callback is present and the timeout
		// property has been defined.
		if(callback &amp;&amp; callback.timeout){
			this._timeOut[o.tId] = window.setTimeout(function(){ oConn.abort(o, callback, true); }, callback.timeout);
		}

		// Remove HTML elements created by appendPostData
		if(oElements &amp;&amp; oElements.length &gt; 0){
			for(i=0; i &lt; oElements.length; i++){
				this._formNode.removeChild(oElements[i]);
			}
		}

		// Restore HTML form attributes to their original
		// values prior to file upload.
		for(prop in rawFormAttributes){
			if(YAHOO.lang.hasOwnProperty(rawFormAttributes, prop)){
				if(rawFormAttributes[prop]){
					this._formNode.setAttribute(prop, rawFormAttributes[prop]);
				}
				else{
					this._formNode.removeAttribute(prop);
				}
			}
		}

		// Reset HTML form state properties.
		this.resetFormState();

		// Create the upload callback handler that fires when the iframe
		// receives the load event.  Subsequently, the event handler is detached
		// and the iframe removed from the document.
		uploadCallback = function() {
			var body, pre, text;

			if(callback &amp;&amp; callback.timeout){
				window.clearTimeout(oConn._timeOut[o.tId]);
				delete oConn._timeOut[o.tId];
			}

			// Fire global custom event -- completeEvent
			oConn.completeEvent.fire(o, args);

			if(o.completeEvent){
				// Fire transaction custom event -- completeEvent
				o.completeEvent.fire(o, args);
			}

			obj = {
			    tId : o.tId,
			    argument : args
            };

			try
			{
				body = io.contentWindow.document.getElementsByTagName('body')[0];
				pre = io.contentWindow.document.getElementsByTagName('pre')[0];

				if (body) {
					if (pre) {
						text = pre.textContent?pre.textContent:pre.innerText;
					}
					else {
						text = body.textContent?body.textContent:body.innerText;
					}
				}
				obj.responseText = text;
				// responseText and responseXML will be populated with the same data from the iframe.
				// Since the HTTP headers cannot be read from the iframe
				obj.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
			}
			catch(e){}

			if(callback &amp;&amp; callback.upload){
				if(!callback.scope){
					callback.upload(obj);
					YAHOO.log('Upload callback.', 'info', 'Connection');
				}
				else{
					callback.upload.apply(callback.scope, [obj]);
					YAHOO.log('Upload callback with scope.', 'info', 'Connection');
				}
			}

			// Fire global custom event -- uploadEvent
			oConn.uploadEvent.fire(obj);

			if(o.uploadEvent){
				// Fire transaction custom event -- uploadEvent
				o.uploadEvent.fire(obj);
			}

			YE.removeListener(io, &quot;load&quot;, uploadCallback);

			setTimeout(
				function(){
					document.body.removeChild(io);
					oConn.releaseObject(o);
					YAHOO.log('File upload iframe destroyed. Id is:' + frameId, 'info', 'Connection');
				}, 100);
		};

		// Bind the onload handler to the iframe to detect the file upload response.
		YE.addListener(io, &quot;load&quot;, uploadCallback);
	}

	YCM.setForm = _setForm;
	YCM.resetFormState = _resetFormState;
	YCM.createFrame = _createFrame;
	YCM.appendPostData = _appendPostData;
	YCM.uploadFile = _uploadFile;
})();

YAHOO.register(&quot;connection&quot;, YAHOO.util.Connect, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
(function() {

var Y = YAHOO.util;

/*
Copyright (c) 2006, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
*/

/**
 * The animation module provides allows effects to be added to HTMLElements.
 * @module animation
 * @requires yahoo, event, dom
 */

/**
 *
 * Base animation class that provides the interface for building animated effects.
 * &lt;p&gt;Usage: var myAnim = new YAHOO.util.Anim(el, { width: { from: 10, to: 100 } }, 1, YAHOO.util.Easing.easeOut);&lt;/p&gt;
 * @class Anim
 * @namespace YAHOO.util
 * @requires YAHOO.util.AnimMgr
 * @requires YAHOO.util.Easing
 * @requires YAHOO.util.Dom
 * @requires YAHOO.util.Event
 * @requires YAHOO.util.CustomEvent
 * @constructor
 * @param {String | HTMLElement} el Reference to the element that will be animated
 * @param {Object} attributes The attribute(s) to be animated.  
 * Each attribute is an object with at minimum a &quot;to&quot; or &quot;by&quot; member defined.  
 * Additional optional members are &quot;from&quot; (defaults to current value), &quot;units&quot; (defaults to &quot;px&quot;).  
 * All attribute names use camelCase.
 * @param {Number} duration (optional, defaults to 1 second) Length of animation (frames or seconds), defaults to time-based
 * @param {Function} method (optional, defaults to YAHOO.util.Easing.easeNone) Computes the values that are applied to the attributes per frame (generally a YAHOO.util.Easing method)
 */

var Anim = function(el, attributes, duration, method) {
    if (!el) {
        YAHOO.log('element required to create Anim instance', 'error', 'Anim');
    }
    this.init(el, attributes, duration, method); 
};

Anim.NAME = 'Anim';

Anim.prototype = {
    /**
     * Provides a readable name for the Anim instance.
     * @method toString
     * @return {String}
     */
    toString: function() {
        var el = this.getEl() || {};
        var id = el.id || el.tagName;
        return (this.constructor.NAME + ': ' + id);
    },
    
    patterns: { // cached for performance
        noNegatives:        /width|height|opacity|padding/i, // keep at zero or above
        offsetAttribute:  /^((width|height)|(top|left))$/, // use offsetValue as default
        defaultUnit:        /width|height|top$|bottom$|left$|right$/i, // use 'px' by default
        offsetUnit:         /\d+(em|%|en|ex|pt|in|cm|mm|pc)$/i // IE may return these, so convert these to offset
    },
    
    /**
     * Returns the value computed by the animation's &quot;method&quot;.
     * @method doMethod
     * @param {String} attr The name of the attribute.
     * @param {Number} start The value this attribute should start from for this animation.
     * @param {Number} end  The value this attribute should end at for this animation.
     * @return {Number} The Value to be applied to the attribute.
     */
    doMethod: function(attr, start, end) {
        return this.method(this.currentFrame, start, end - start, this.totalFrames);
    },
    
    /**
     * Applies a value to an attribute.
     * @method setAttribute
     * @param {String} attr The name of the attribute.
     * @param {Number} val The value to be applied to the attribute.
     * @param {String} unit The unit ('px', '%', etc.) of the value.
     */
    setAttribute: function(attr, val, unit) {
        var el = this.getEl();
        if ( this.patterns.noNegatives.test(attr) ) {
            val = (val &gt; 0) ? val : 0;
        }

        if (attr in el &amp;&amp; !('style' in el &amp;&amp; attr in el.style)) {
            el[attr] = val;
        } else {
            Y.Dom.setStyle(el, attr, val + unit);
        }
    },                        
    
    /**
     * Returns current value of the attribute.
     * @method getAttribute
     * @param {String} attr The name of the attribute.
     * @return {Number} val The current value of the attribute.
     */
    getAttribute: function(attr) {
        var el = this.getEl();
        var val = Y.Dom.getStyle(el, attr);

        if (val !== 'auto' &amp;&amp; !this.patterns.offsetUnit.test(val)) {
            return parseFloat(val);
        }
        
        var a = this.patterns.offsetAttribute.exec(attr) || [];
        var pos = !!( a[3] ); // top or left
        var box = !!( a[2] ); // width or height
        
        if ('style' in el) {
            // use offsets for width/height and abs pos top/left
            if ( box || (Y.Dom.getStyle(el, 'position') == 'absolute' &amp;&amp; pos) ) {
                val = el['offset' + a[0].charAt(0).toUpperCase() + a[0].substr(1)];
            } else { // default to zero for other 'auto'
                val = 0;
            }
        } else if (attr in el) {
            val = el[attr];
        }

        return val;
    },
    
    /**
     * Returns the unit to use when none is supplied.
     * @method getDefaultUnit
     * @param {attr} attr The name of the attribute.
     * @return {String} The default unit to be used.
     */
    getDefaultUnit: function(attr) {
         if ( this.patterns.defaultUnit.test(attr) ) {
            return 'px';
         }
         
         return '';
    },
        
    /**
     * Sets the actual values to be used during the animation.  Should only be needed for subclass use.
     * @method setRuntimeAttribute
     * @param {Object} attr The attribute object
     * @private 
     */
    setRuntimeAttribute: function(attr) {
        var start;
        var end;
        var attributes = this.attributes;

        this.runtimeAttributes[attr] = {};
        
        var isset = function(prop) {
            return (typeof prop !== 'undefined');
        };
        
        if ( !isset(attributes[attr]['to']) &amp;&amp; !isset(attributes[attr]['by']) ) {
            return false; // note return; nothing to animate to
        }
        
        start = ( isset(attributes[attr]['from']) ) ? attributes[attr]['from'] : this.getAttribute(attr);

        // To beats by, per SMIL 2.1 spec
        if ( isset(attributes[attr]['to']) ) {
            end = attributes[attr]['to'];
        } else if ( isset(attributes[attr]['by']) ) {
            if (start.constructor == Array) {
                end = [];
                for (var i = 0, len = start.length; i &lt; len; ++i) {
                    end[i] = start[i] + attributes[attr]['by'][i] * 1; // times 1 to cast &quot;by&quot; 
                }
            } else {
                end = start + attributes[attr]['by'] * 1;
            }
        }
        
        this.runtimeAttributes[attr].start = start;
        this.runtimeAttributes[attr].end = end;

        // set units if needed
        this.runtimeAttributes[attr].unit = ( isset(attributes[attr].unit) ) ?
                attributes[attr]['unit'] : this.getDefaultUnit(attr);
        return true;
    },

    /**
     * Constructor for Anim instance.
     * @method init
     * @param {String | HTMLElement} el Reference to the element that will be animated
     * @param {Object} attributes The attribute(s) to be animated.  
     * Each attribute is an object with at minimum a &quot;to&quot; or &quot;by&quot; member defined.  
     * Additional optional members are &quot;from&quot; (defaults to current value), &quot;units&quot; (defaults to &quot;px&quot;).  
     * All attribute names use camelCase.
     * @param {Number} duration (optional, defaults to 1 second) Length of animation (frames or seconds), defaults to time-based
     * @param {Function} method (optional, defaults to YAHOO.util.Easing.easeNone) Computes the values that are applied to the attributes per frame (generally a YAHOO.util.Easing method)
     */ 
    init: function(el, attributes, duration, method) {
        /**
         * Whether or not the animation is running.
         * @property isAnimated
         * @private
         * @type Boolean
         */
        var isAnimated = false;
        
        /**
         * A Date object that is created when the animation begins.
         * @property startTime
         * @private
         * @type Date
         */
        var startTime = null;
        
        /**
         * The number of frames this animation was able to execute.
         * @property actualFrames
         * @private
         * @type Int
         */
        var actualFrames = 0; 

        /**
         * The element to be animated.
         * @property el
         * @private
         * @type HTMLElement
         */
        el = Y.Dom.get(el);
        
        /**
         * The collection of attributes to be animated.  
         * Each attribute must have at least a &quot;to&quot; or &quot;by&quot; defined in order to animate.  
         * If &quot;to&quot; is supplied, the animation will end with the attribute at that value.  
         * If &quot;by&quot; is supplied, the animation will end at that value plus its starting value. 
         * If both are supplied, &quot;to&quot; is used, and &quot;by&quot; is ignored. 
         * Optional additional member include &quot;from&quot; (the value the attribute should start animating from, defaults to current value), and &quot;unit&quot; (the units to apply to the values).
         * @property attributes
         * @type Object
         */
        this.attributes = attributes || {};
        
        /**
         * The length of the animation.  Defaults to &quot;1&quot; (second).
         * @property duration
         * @type Number
         */
        this.duration = !YAHOO.lang.isUndefined(duration) ? duration : 1;
        
        /**
         * The method that will provide values to the attribute(s) during the animation. 
         * Defaults to &quot;YAHOO.util.Easing.easeNone&quot;.
         * @property method
         * @type Function
         */
        this.method = method || Y.Easing.easeNone;

        /**
         * Whether or not the duration should be treated as seconds.
         * Defaults to true.
         * @property useSeconds
         * @type Boolean
         */
        this.useSeconds = true; // default to seconds
        
        /**
         * The location of the current animation on the timeline.
         * In time-based animations, this is used by AnimMgr to ensure the animation finishes on time.
         * @property currentFrame
         * @type Int
         */
        this.currentFrame = 0;
        
        /**
         * The total number of frames to be executed.
         * In time-based animations, this is used by AnimMgr to ensure the animation finishes on time.
         * @property totalFrames
         * @type Int
         */
        this.totalFrames = Y.AnimMgr.fps;
        
        /**
         * Changes the animated element
         * @method setEl
         */
        this.setEl = function(element) {
            el = Y.Dom.get(element);
        };
        
        /**
         * Returns a reference to the animated element.
         * @method getEl
         * @return {HTMLElement}
         */
        this.getEl = function() { return el; };
        
        /**
         * Checks whether the element is currently animated.
         * @method isAnimated
         * @return {Boolean} current value of isAnimated.     
         */
        this.isAnimated = function() {
            return isAnimated;
        };
        
        /**
         * Returns the animation start time.
         * @method getStartTime
         * @return {Date} current value of startTime.      
         */
        this.getStartTime = function() {
            return startTime;
        };        
        
        this.runtimeAttributes = {};
        
        var logger = {};
        logger.log = function() {YAHOO.log.apply(window, arguments)};
        
        logger.log('creating new instance of ' + this);
        
        /**
         * Starts the animation by registering it with the animation manager. 
         * @method animate  
         */
        this.animate = function() {
            if ( this.isAnimated() ) {
                return false;
            }
            
            this.currentFrame = 0;
            
            this.totalFrames = ( this.useSeconds ) ? Math.ceil(Y.AnimMgr.fps * this.duration) : this.duration;
    
            if (this.duration === 0 &amp;&amp; this.useSeconds) { // jump to last frame if zero second duration 
                this.totalFrames = 1; 
            }
            Y.AnimMgr.registerElement(this);
            return true;
        };
          
        /**
         * Stops the animation.  Normally called by AnimMgr when animation completes.
         * @method stop
         * @param {Boolean} finish (optional) If true, animation will jump to final frame.
         */ 
        this.stop = function(finish) {
            if (!this.isAnimated()) { // nothing to stop
                return false;
            }

            if (finish) {
                 this.currentFrame = this.totalFrames;
                 this._onTween.fire();
            }
            Y.AnimMgr.stop(this);
        };
        
        this._handleStart = function() {            
            this.onStart.fire();
            
            this.runtimeAttributes = {};
            for (var attr in this.attributes) {
                if (this.attributes.hasOwnProperty(attr)) {
                    this.setRuntimeAttribute(attr);
                }
            }
            
            isAnimated = true;
            actualFrames = 0;
            startTime = new Date(); 
        };
        
        /**
         * Feeds the starting and ending values for each animated attribute to doMethod once per frame, then applies the resulting value to the attribute(s).
         * @private
         */
         
        this._handleTween = function() {
            var data = {
                duration: new Date() - this.getStartTime(),
                currentFrame: this.currentFrame
            };
            
            data.toString = function() {
                return (
                    'duration: ' + data.duration +
                    ', currentFrame: ' + data.currentFrame
                );
            };
            
            this.onTween.fire(data);
            
            var runtimeAttributes = this.runtimeAttributes;
            
            for (var attr in runtimeAttributes) {
                if (runtimeAttributes.hasOwnProperty(attr)) {
                    this.setAttribute(attr, this.doMethod(attr, runtimeAttributes[attr].start, runtimeAttributes[attr].end), runtimeAttributes[attr].unit); 
                }
            }
            
            this.afterTween.fire(data);
            
            actualFrames += 1;
        };
        
        this._handleComplete = function() {
            var actual_duration = (new Date() - startTime) / 1000 ;
            
            var data = {
                duration: actual_duration,
                frames: actualFrames,
                fps: actualFrames / actual_duration
            };
            
            data.toString = function() {
                return (
                    'duration: ' + data.duration +
                    ', frames: ' + data.frames +
                    ', fps: ' + data.fps
                );
            };
            
            isAnimated = false;
            actualFrames = 0;
            this.onComplete.fire(data);
        };
        
        /**
         * Custom event that fires after onStart, useful in subclassing
         * @private
         */    
        this._onStart = new Y.CustomEvent('_start', this, true);

        /**
         * Custom event that fires when animation begins
         * Listen via subscribe method (e.g. myAnim.onStart.subscribe(someFunction)
         * @event onStart
         */    
        this.onStart = new Y.CustomEvent('start', this);
        
        /**
         * Custom event that fires between each frame
         * Listen via subscribe method (e.g. myAnim.onTween.subscribe(someFunction)
         * @event onTween
         */
        this.onTween = new Y.CustomEvent('tween', this);
        
        /**
         * Custom event that fires between each frame
         * Listen via subscribe method (e.g. myAnim.afterTween.subscribe(someFunction)
         * @event afterTween
         */
        this.afterTween = new Y.CustomEvent('afterTween', this);
        
        /**
         * Custom event that fires after onTween
         * @private
         */
        this._onTween = new Y.CustomEvent('_tween', this, true);
        
        /**
         * Custom event that fires when animation ends
         * Listen via subscribe method (e.g. myAnim.onComplete.subscribe(someFunction)
         * @event onComplete
         */
        this.onComplete = new Y.CustomEvent('complete', this);
        /**
         * Custom event that fires after onComplete
         * @private
         */
        this._onComplete = new Y.CustomEvent('_complete', this, true);

        this._onStart.subscribe(this._handleStart);
        this._onTween.subscribe(this._handleTween);
        this._onComplete.subscribe(this._handleComplete);
    }
};

    Y.Anim = Anim;
})();
/**
 * Handles animation queueing and threading.
 * Used by Anim and subclasses.
 * @class AnimMgr
 * @namespace YAHOO.util
 */
YAHOO.util.AnimMgr = new function() {
    /** 
     * Reference to the animation Interval.
     * @property thread
     * @private
     * @type Int
     */
    var thread = null;
    
    /** 
     * The current queue of registered animation objects.
     * @property queue
     * @private
     * @type Array
     */    
    var queue = [];

    /** 
     * The number of active animations.
     * @property tweenCount
     * @private
     * @type Int
     */        
    var tweenCount = 0;

    /** 
     * Base frame rate (frames per second). 
     * Arbitrarily high for better x-browser calibration (slower browsers drop more frames).
     * @property fps
     * @type Int
     * 
     */
    this.fps = 1000;

    /** 
     * Interval delay in milliseconds, defaults to fastest possible.
     * @property delay
     * @type Int
     * 
     */
    this.delay = 20;

    /**
     * Adds an animation instance to the animation queue.
     * All animation instances must be registered in order to animate.
     * @method registerElement
     * @param {object} tween The Anim instance to be be registered
     */
    this.registerElement = function(tween) {
        queue[queue.length] = tween;
        tweenCount += 1;
        tween._onStart.fire();
        this.start();
    };
    
    var _unregisterQueue = [];
    var _unregistering = false;

    var doUnregister = function() {
        var next_args = _unregisterQueue.shift();
        unRegister.apply(YAHOO.util.AnimMgr,next_args);
        if (_unregisterQueue.length) {
            arguments.callee();
        }
    };

    var unRegister = function(tween, index) {
        index = index || getIndex(tween);
        if (!tween.isAnimated() || index === -1) {
            return false;
        }
        
        tween._onComplete.fire();
        queue.splice(index, 1);

        tweenCount -= 1;
        if (tweenCount &lt;= 0) {
            this.stop();
        }

        return true;
    };

    /**
     * removes an animation instance from the animation queue.
     * All animation instances must be registered in order to animate.
     * @method unRegister
     * @param {object} tween The Anim instance to be be registered
     * @param {Int} index The index of the Anim instance
     * @private
     */
    this.unRegister = function() {
        _unregisterQueue.push(arguments);
        if (!_unregistering) {
            _unregistering = true;
            doUnregister();
            _unregistering = false;
        }
    }

    /**
     * Starts the animation thread.
	* Only one thread can run at a time.
     * @method start
     */    
    this.start = function() {
        if (thread === null) {
            thread = setInterval(this.run, this.delay);
        }
    };

    /**
     * Stops the animation thread or a specific animation instance.
     * @method stop
     * @param {object} tween A specific Anim instance to stop (optional)
     * If no instance given, Manager stops thread and all animations.
     */    
    this.stop = function(tween) {
        if (!tween) {
            clearInterval(thread);
            
            for (var i = 0, len = queue.length; i &lt; len; ++i) {
                this.unRegister(queue[0], 0);  
            }

            queue = [];
            thread = null;
            tweenCount = 0;
        }
        else {
            this.unRegister(tween);
        }
    };
    
    /**
     * Called per Interval to handle each animation frame.
     * @method run
     */    
    this.run = function() {
        for (var i = 0, len = queue.length; i &lt; len; ++i) {
            var tween = queue[i];
            if ( !tween || !tween.isAnimated() ) { continue; }

            if (tween.currentFrame &lt; tween.totalFrames || tween.totalFrames === null)
            {
                tween.currentFrame += 1;
                
                if (tween.useSeconds) {
                    correctFrame(tween);
                }
                tween._onTween.fire();          
            }
            else { YAHOO.util.AnimMgr.stop(tween, i); }
        }
    };
    
    var getIndex = function(anim) {
        for (var i = 0, len = queue.length; i &lt; len; ++i) {
            if (queue[i] === anim) {
                return i; // note return;
            }
        }
        return -1;
    };
    
    /**
     * On the fly frame correction to keep animation on time.
     * @method correctFrame
     * @private
     * @param {Object} tween The Anim instance being corrected.
     */
    var correctFrame = function(tween) {
        var frames = tween.totalFrames;
        var frame = tween.currentFrame;
        var expected = (tween.currentFrame * tween.duration * 1000 / tween.totalFrames);
        var elapsed = (new Date() - tween.getStartTime());
        var tweak = 0;
        
        if (elapsed &lt; tween.duration * 1000) { // check if falling behind
            tweak = Math.round((elapsed / expected - 1) * tween.currentFrame);
        } else { // went over duration, so jump to end
            tweak = frames - (frame + 1); 
        }
        if (tweak &gt; 0 &amp;&amp; isFinite(tweak)) { // adjust if needed
            if (tween.currentFrame + tweak &gt;= frames) {// dont go past last frame
                tweak = frames - (frame + 1);
            }
            
            tween.currentFrame += tweak;      
        }
    };
    this._queue = queue;
    this._getIndex = getIndex;
};
/**
 * Used to calculate Bezier splines for any number of control points.
 * @class Bezier
 * @namespace YAHOO.util
 *
 */
YAHOO.util.Bezier = new function() {
    /**
     * Get the current position of the animated element based on t.
     * Each point is an array of &quot;x&quot; and &quot;y&quot; values (0 = x, 1 = y)
     * At least 2 points are required (start and end).
     * First point is start. Last point is end.
     * Additional control points are optional.     
     * @method getPosition
     * @param {Array} points An array containing Bezier points
     * @param {Number} t A number between 0 and 1 which is the basis for determining current position
     * @return {Array} An array containing int x and y member data
     */
    this.getPosition = function(points, t) {  
        var n = points.length;
        var tmp = [];

        for (var i = 0; i &lt; n; ++i){
            tmp[i] = [points[i][0], points[i][1]]; // save input
        }
        
        for (var j = 1; j &lt; n; ++j) {
            for (i = 0; i &lt; n - j; ++i) {
                tmp[i][0] = (1 - t) * tmp[i][0] + t * tmp[parseInt(i + 1, 10)][0];
                tmp[i][1] = (1 - t) * tmp[i][1] + t * tmp[parseInt(i + 1, 10)][1]; 
            }
        }
    
        return [ tmp[0][0], tmp[0][1] ]; 
    
    };
};
(function() {
/**
 * Anim subclass for color transitions.
 * &lt;p&gt;Usage: &lt;code&gt;var myAnim = new Y.ColorAnim(el, { backgroundColor: { from: '#FF0000', to: '#FFFFFF' } }, 1, Y.Easing.easeOut);&lt;/code&gt; Color values can be specified with either 112233, #112233, 
 * [255,255,255], or rgb(255,255,255)&lt;/p&gt;
 * @class ColorAnim
 * @namespace YAHOO.util
 * @requires YAHOO.util.Anim
 * @requires YAHOO.util.AnimMgr
 * @requires YAHOO.util.Easing
 * @requires YAHOO.util.Bezier
 * @requires YAHOO.util.Dom
 * @requires YAHOO.util.Event
 * @constructor
 * @extends YAHOO.util.Anim
 * @param {HTMLElement | String} el Reference to the element that will be animated
 * @param {Object} attributes The attribute(s) to be animated.
 * Each attribute is an object with at minimum a &quot;to&quot; or &quot;by&quot; member defined.
 * Additional optional members are &quot;from&quot; (defaults to current value), &quot;units&quot; (defaults to &quot;px&quot;).
 * All attribute names use camelCase.
 * @param {Number} duration (optional, defaults to 1 second) Length of animation (frames or seconds), defaults to time-based
 * @param {Function} method (optional, defaults to YAHOO.util.Easing.easeNone) Computes the values that are applied to the attributes per frame (generally a YAHOO.util.Easing method)
 */
    var ColorAnim = function(el, attributes, duration,  method) {
        ColorAnim.superclass.constructor.call(this, el, attributes, duration, method);
    };
    
    ColorAnim.NAME = 'ColorAnim';

    ColorAnim.DEFAULT_BGCOLOR = '#fff';
    // shorthand
    var Y = YAHOO.util;
    YAHOO.extend(ColorAnim, Y.Anim);

    var superclass = ColorAnim.superclass;
    var proto = ColorAnim.prototype;
    
    proto.patterns.color = /color$/i;
    proto.patterns.rgb            = /^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i;
    proto.patterns.hex            = /^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i;
    proto.patterns.hex3          = /^#?([0-9A-F]{1})([0-9A-F]{1})([0-9A-F]{1})$/i;
    proto.patterns.transparent = /^transparent|rgba\(0, 0, 0, 0\)$/; // need rgba for safari
    
    /**
     * Attempts to parse the given string and return a 3-tuple.
     * @method parseColor
     * @param {String} s The string to parse.
     * @return {Array} The 3-tuple of rgb values.
     */
    proto.parseColor = function(s) {
        if (s.length == 3) { return s; }
    
        var c = this.patterns.hex.exec(s);
        if (c &amp;&amp; c.length == 4) {
            return [ parseInt(c[1], 16), parseInt(c[2], 16), parseInt(c[3], 16) ];
        }
    
        c = this.patterns.rgb.exec(s);
        if (c &amp;&amp; c.length == 4) {
            return [ parseInt(c[1], 10), parseInt(c[2], 10), parseInt(c[3], 10) ];
        }
    
        c = this.patterns.hex3.exec(s);
        if (c &amp;&amp; c.length == 4) {
            return [ parseInt(c[1] + c[1], 16), parseInt(c[2] + c[2], 16), parseInt(c[3] + c[3], 16) ];
        }
        
        return null;
    };

    proto.getAttribute = function(attr) {
        var el = this.getEl();
        if (this.patterns.color.test(attr) ) {
            var val = YAHOO.util.Dom.getStyle(el, attr);
            
            var that = this;
            if (this.patterns.transparent.test(val)) { // bgcolor default
                var parent = YAHOO.util.Dom.getAncestorBy(el, function(node) {
                    return !that.patterns.transparent.test(val);
                });

                if (parent) {
                    val = Y.Dom.getStyle(parent, attr);
                } else {
                    val = ColorAnim.DEFAULT_BGCOLOR;
                }
            }
        } else {
            val = superclass.getAttribute.call(this, attr);
        }

        return val;
    };
    
    proto.doMethod = function(attr, start, end) {
        var val;
    
        if ( this.patterns.color.test(attr) ) {
            val = [];
            for (var i = 0, len = start.length; i &lt; len; ++i) {
                val[i] = superclass.doMethod.call(this, attr, start[i], end[i]);
            }
            
            val = 'rgb('+Math.floor(val[0])+','+Math.floor(val[1])+','+Math.floor(val[2])+')';
        }
        else {
            val = superclass.doMethod.call(this, attr, start, end);
        }

        return val;
    };

    proto.setRuntimeAttribute = function(attr) {
        superclass.setRuntimeAttribute.call(this, attr);
        
        if ( this.patterns.color.test(attr) ) {
            var attributes = this.attributes;
            var start = this.parseColor(this.runtimeAttributes[attr].start);
            var end = this.parseColor(this.runtimeAttributes[attr].end);
            // fix colors if going &quot;by&quot;
            if ( typeof attributes[attr]['to'] === 'undefined' &amp;&amp; typeof attributes[attr]['by'] !== 'undefined' ) {
                end = this.parseColor(attributes[attr].by);
            
                for (var i = 0, len = start.length; i &lt; len; ++i) {
                    end[i] = start[i] + end[i];
                }
            }
            
            this.runtimeAttributes[attr].start = start;
            this.runtimeAttributes[attr].end = end;
        }
    };

    Y.ColorAnim = ColorAnim;
})();
/*!
TERMS OF USE - EASING EQUATIONS
Open source under the BSD License.
Copyright 2001 Robert Penner All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 * Neither the name of the author nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * Singleton that determines how an animation proceeds from start to end.
 * @class Easing
 * @namespace YAHOO.util
*/

YAHOO.util.Easing = {

    /**
     * Uniform speed between points.
     * @method easeNone
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeNone: function (t, b, c, d) {
    	return c*t/d + b;
    },
    
    /**
     * Begins slowly and accelerates towards end.
     * @method easeIn
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeIn: function (t, b, c, d) {
    	return c*(t/=d)*t + b;
    },

    /**
     * Begins quickly and decelerates towards end.
     * @method easeOut
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeOut: function (t, b, c, d) {
    	return -c *(t/=d)*(t-2) + b;
    },
    
    /**
     * Begins slowly and decelerates towards end.
     * @method easeBoth
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeBoth: function (t, b, c, d) {
    	if ((t/=d/2) &lt; 1) {
            return c/2*t*t + b;
        }
        
    	return -c/2 * ((--t)*(t-2) - 1) + b;
    },
    
    /**
     * Begins slowly and accelerates towards end.
     * @method easeInStrong
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeInStrong: function (t, b, c, d) {
    	return c*(t/=d)*t*t*t + b;
    },
    
    /**
     * Begins quickly and decelerates towards end.
     * @method easeOutStrong
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeOutStrong: function (t, b, c, d) {
    	return -c * ((t=t/d-1)*t*t*t - 1) + b;
    },
    
    /**
     * Begins slowly and decelerates towards end.
     * @method easeBothStrong
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    easeBothStrong: function (t, b, c, d) {
    	if ((t/=d/2) &lt; 1) {
            return c/2*t*t*t*t + b;
        }
        
    	return -c/2 * ((t-=2)*t*t*t - 2) + b;
    },

    /**
     * Snap in elastic effect.
     * @method elasticIn
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} a Amplitude (optional)
     * @param {Number} p Period (optional)
     * @return {Number} The computed value for the current animation frame
     */

    elasticIn: function (t, b, c, d, a, p) {
    	if (t == 0) {
            return b;
        }
        if ( (t /= d) == 1 ) {
            return b+c;
        }
        if (!p) {
            p=d*.3;
        }
        
    	if (!a || a &lt; Math.abs(c)) {
            a = c; 
            var s = p/4;
        }
    	else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        
    	return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
    },

    /**
     * Snap out elastic effect.
     * @method elasticOut
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} a Amplitude (optional)
     * @param {Number} p Period (optional)
     * @return {Number} The computed value for the current animation frame
     */
    elasticOut: function (t, b, c, d, a, p) {
    	if (t == 0) {
            return b;
        }
        if ( (t /= d) == 1 ) {
            return b+c;
        }
        if (!p) {
            p=d*.3;
        }
        
    	if (!a || a &lt; Math.abs(c)) {
            a = c;
            var s = p / 4;
        }
    	else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        
    	return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
    },
    
    /**
     * Snap both elastic effect.
     * @method elasticBoth
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} a Amplitude (optional)
     * @param {Number} p Period (optional)
     * @return {Number} The computed value for the current animation frame
     */
    elasticBoth: function (t, b, c, d, a, p) {
    	if (t == 0) {
            return b;
        }
        
        if ( (t /= d/2) == 2 ) {
            return b+c;
        }
        
        if (!p) {
            p = d*(.3*1.5);
        }
        
    	if ( !a || a &lt; Math.abs(c) ) {
            a = c; 
            var s = p/4;
        }
    	else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        
    	if (t &lt; 1) {
            return -.5*(a*Math.pow(2,10*(t-=1)) * 
                    Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
        }
    	return a*Math.pow(2,-10*(t-=1)) * 
                Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
    },


    /**
     * Backtracks slightly, then reverses direction and moves to end.
     * @method backIn
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} s Overshoot (optional)
     * @return {Number} The computed value for the current animation frame
     */
    backIn: function (t, b, c, d, s) {
    	if (typeof s == 'undefined') {
            s = 1.70158;
        }
    	return c*(t/=d)*t*((s+1)*t - s) + b;
    },

    /**
     * Overshoots end, then reverses and comes back to end.
     * @method backOut
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} s Overshoot (optional)
     * @return {Number} The computed value for the current animation frame
     */
    backOut: function (t, b, c, d, s) {
    	if (typeof s == 'undefined') {
            s = 1.70158;
        }
    	return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
    },
    
    /**
     * Backtracks slightly, then reverses direction, overshoots end, 
     * then reverses and comes back to end.
     * @method backBoth
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @param {Number} s Overshoot (optional)
     * @return {Number} The computed value for the current animation frame
     */
    backBoth: function (t, b, c, d, s) {
    	if (typeof s == 'undefined') {
            s = 1.70158; 
        }
        
    	if ((t /= d/2 ) &lt; 1) {
            return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
        }
    	return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
    },

    /**
     * Bounce off of start.
     * @method bounceIn
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    bounceIn: function (t, b, c, d) {
    	return c - YAHOO.util.Easing.bounceOut(d-t, 0, c, d) + b;
    },
    
    /**
     * Bounces off end.
     * @method bounceOut
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    bounceOut: function (t, b, c, d) {
    	if ((t/=d) &lt; (1/2.75)) {
    		return c*(7.5625*t*t) + b;
    	} else if (t &lt; (2/2.75)) {
    		return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
    	} else if (t &lt; (2.5/2.75)) {
    		return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
    	}
        return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
    },
    
    /**
     * Bounces off start and end.
     * @method bounceBoth
     * @param {Number} t Time value used to compute current value
     * @param {Number} b Starting value
     * @param {Number} c Delta between start and end values
     * @param {Number} d Total length of animation
     * @return {Number} The computed value for the current animation frame
     */
    bounceBoth: function (t, b, c, d) {
    	if (t &lt; d/2) {
            return YAHOO.util.Easing.bounceIn(t*2, 0, c, d) * .5 + b;
        }
    	return YAHOO.util.Easing.bounceOut(t*2-d, 0, c, d) * .5 + c*.5 + b;
    }
};

(function() {
/**
 * Anim subclass for moving elements along a path defined by the &quot;points&quot; 
 * member of &quot;attributes&quot;.  All &quot;points&quot; are arrays with x, y coordinates.
 * &lt;p&gt;Usage: &lt;code&gt;var myAnim = new YAHOO.util.Motion(el, { points: { to: [800, 800] } }, 1, YAHOO.util.Easing.easeOut);&lt;/code&gt;&lt;/p&gt;
 * @class Motion
 * @namespace YAHOO.util
 * @requires YAHOO.util.Anim
 * @requires YAHOO.util.AnimMgr
 * @requires YAHOO.util.Easing
 * @requires YAHOO.util.Bezier
 * @requires YAHOO.util.Dom
 * @requires YAHOO.util.Event
 * @requires YAHOO.util.CustomEvent 
 * @constructor
 * @extends YAHOO.util.ColorAnim
 * @param {String | HTMLElement} el Reference to the element that will be animated
 * @param {Object} attributes The attribute(s) to be animated.  
 * Each attribute is an object with at minimum a &quot;to&quot; or &quot;by&quot; member defined.  
 * Additional optional members are &quot;from&quot; (defaults to current value), &quot;units&quot; (defaults to &quot;px&quot;).  
 * All attribute names use camelCase.
 * @param {Number} duration (optional, defaults to 1 second) Length of animation (frames or seconds), defaults to time-based
 * @param {Function} method (optional, defaults to YAHOO.util.Easing.easeNone) Computes the values that are applied to the attributes per frame (generally a YAHOO.util.Easing method)
 */
    var Motion = function(el, attributes, duration,  method) {
        if (el) { // dont break existing subclasses not using YAHOO.extend
            Motion.superclass.constructor.call(this, el, attributes, duration, method);
        }
    };


    Motion.NAME = 'Motion';

    // shorthand
    var Y = YAHOO.util;
    YAHOO.extend(Motion, Y.ColorAnim);
    
    var superclass = Motion.superclass;
    var proto = Motion.prototype;

    proto.patterns.points = /^points$/i;
    
    proto.setAttribute = function(attr, val, unit) {
        if (  this.patterns.points.test(attr) ) {
            unit = unit || 'px';
            superclass.setAttribute.call(this, 'left', val[0], unit);
            superclass.setAttribute.call(this, 'top', val[1], unit);
        } else {
            superclass.setAttribute.call(this, attr, val, unit);
        }
    };

    proto.getAttribute = function(attr) {
        if (  this.patterns.points.test(attr) ) {
            var val = [
                superclass.getAttribute.call(this, 'left'),
                superclass.getAttribute.call(this, 'top')
            ];
        } else {
            val = superclass.getAttribute.call(this, attr);
        }

        return val;
    };

    proto.doMethod = function(attr, start, end) {
        var val = null;

        if ( this.patterns.points.test(attr) ) {
            var t = this.method(this.currentFrame, 0, 100, this.totalFrames) / 100;				
            val = Y.Bezier.getPosition(this.runtimeAttributes[attr], t);
        } else {
            val = superclass.doMethod.call(this, attr, start, end);
        }
        return val;
    };

    proto.setRuntimeAttribute = function(attr) {
        if ( this.patterns.points.test(attr) ) {
            var el = this.getEl();
            var attributes = this.attributes;
            var start;
            var control = attributes['points']['control'] || [];
            var end;
            var i, len;
            
            if (control.length &gt; 0 &amp;&amp; !(control[0] instanceof Array) ) { // could be single point or array of points
                control = [control];
            } else { // break reference to attributes.points.control
                var tmp = []; 
                for (i = 0, len = control.length; i&lt; len; ++i) {
                    tmp[i] = control[i];
                }
                control = tmp;
            }

            if (Y.Dom.getStyle(el, 'position') == 'static') { // default to relative
                Y.Dom.setStyle(el, 'position', 'relative');
            }
    
            if ( isset(attributes['points']['from']) ) {
                Y.Dom.setXY(el, attributes['points']['from']); // set position to from point
            } 
            else { Y.Dom.setXY( el, Y.Dom.getXY(el) ); } // set it to current position
            
            start = this.getAttribute('points'); // get actual top &amp; left
            
            // TO beats BY, per SMIL 2.1 spec
            if ( isset(attributes['points']['to']) ) {
                end = translateValues.call(this, attributes['points']['to'], start);
                
                var pageXY = Y.Dom.getXY(this.getEl());
                for (i = 0, len = control.length; i &lt; len; ++i) {
                    control[i] = translateValues.call(this, control[i], start);
                }

                
            } else if ( isset(attributes['points']['by']) ) {
                end = [ start[0] + attributes['points']['by'][0], start[1] + attributes['points']['by'][1] ];
                
                for (i = 0, len = control.length; i &lt; len; ++i) {
                    control[i] = [ start[0] + control[i][0], start[1] + control[i][1] ];
                }
            }

            this.runtimeAttributes[attr] = [start];
            
            if (control.length &gt; 0) {
                this.runtimeAttributes[attr] = this.runtimeAttributes[attr].concat(control); 
            }

            this.runtimeAttributes[attr][this.runtimeAttributes[attr].length] = end;
        }
        else {
            superclass.setRuntimeAttribute.call(this, attr);
        }
    };
    
    var translateValues = function(val, start) {
        var pageXY = Y.Dom.getXY(this.getEl());
        val = [ val[0] - pageXY[0] + start[0], val[1] - pageXY[1] + start[1] ];

        return val; 
    };
    
    var isset = function(prop) {
        return (typeof prop !== 'undefined');
    };

    Y.Motion = Motion;
})();
(function() {
/**
 * Anim subclass for scrolling elements to a position defined by the &quot;scroll&quot;
 * member of &quot;attributes&quot;.  All &quot;scroll&quot; members are arrays with x, y scroll positions.
 * &lt;p&gt;Usage: &lt;code&gt;var myAnim = new YAHOO.util.Scroll(el, { scroll: { to: [0, 800] } }, 1, YAHOO.util.Easing.easeOut);&lt;/code&gt;&lt;/p&gt;
 * @class Scroll
 * @namespace YAHOO.util
 * @requires YAHOO.util.Anim
 * @requires YAHOO.util.AnimMgr
 * @requires YAHOO.util.Easing
 * @requires YAHOO.util.Bezier
 * @requires YAHOO.util.Dom
 * @requires YAHOO.util.Event
 * @requires YAHOO.util.CustomEvent 
 * @extends YAHOO.util.ColorAnim
 * @constructor
 * @param {String or HTMLElement} el Reference to the element that will be animated
 * @param {Object} attributes The attribute(s) to be animated.  
 * Each attribute is an object with at minimum a &quot;to&quot; or &quot;by&quot; member defined.  
 * Additional optional members are &quot;from&quot; (defaults to current value), &quot;units&quot; (defaults to &quot;px&quot;).  
 * All attribute names use camelCase.
 * @param {Number} duration (optional, defaults to 1 second) Length of animation (frames or seconds), defaults to time-based
 * @param {Function} method (optional, defaults to YAHOO.util.Easing.easeNone) Computes the values that are applied to the attributes per frame (generally a YAHOO.util.Easing method)
 */
    var Scroll = function(el, attributes, duration,  method) {
        if (el) { // dont break existing subclasses not using YAHOO.extend
            Scroll.superclass.constructor.call(this, el, attributes, duration, method);
        }
    };

    Scroll.NAME = 'Scroll';

    // shorthand
    var Y = YAHOO.util;
    YAHOO.extend(Scroll, Y.ColorAnim);
    
    var superclass = Scroll.superclass;
    var proto = Scroll.prototype;

    proto.doMethod = function(attr, start, end) {
        var val = null;
    
        if (attr == 'scroll') {
            val = [
                this.method(this.currentFrame, start[0], end[0] - start[0], this.totalFrames),
                this.method(this.currentFrame, start[1], end[1] - start[1], this.totalFrames)
            ];
            
        } else {
            val = superclass.doMethod.call(this, attr, start, end);
        }
        return val;
    };

    proto.getAttribute = function(attr) {
        var val = null;
        var el = this.getEl();
        
        if (attr == 'scroll') {
            val = [ el.scrollLeft, el.scrollTop ];
        } else {
            val = superclass.getAttribute.call(this, attr);
        }
        
        return val;
    };

    proto.setAttribute = function(attr, val, unit) {
        var el = this.getEl();
        
        if (attr == 'scroll') {
            el.scrollLeft = val[0];
            el.scrollTop = val[1];
        } else {
            superclass.setAttribute.call(this, attr, val, unit);
        }
    };

    Y.Scroll = Scroll;
})();
YAHOO.register(&quot;animation&quot;, YAHOO.util.Anim, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * The drag and drop utility provides a framework for building drag and drop
 * applications.  In addition to enabling drag and drop for specific elements,
 * the drag and drop elements are tracked by the manager class, and the
 * interactions between the various elements are tracked during the drag and
 * the implementing code is notified about these important moments.
 * @module dragdrop
 * @title Drag and Drop
 * @requires yahoo,dom,event
 * @namespace YAHOO.util
 */

// Only load the library once.  Rewriting the manager class would orphan 
// existing drag and drop instances.
if (!YAHOO.util.DragDropMgr) {

/**
 * DragDropMgr is a singleton that tracks the element interaction for 
 * all DragDrop items in the window.  Generally, you will not call 
 * this class directly, but it does have helper methods that could 
 * be useful in your DragDrop implementations.
 * @class DragDropMgr
 * @static
 */
YAHOO.util.DragDropMgr = function() {

    var Event = YAHOO.util.Event,
        Dom = YAHOO.util.Dom;

    return {
        /**
        * This property is used to turn on global use of the shim element on all DragDrop instances, defaults to false for backcompat. (Use: YAHOO.util.DDM.useShim = true)
        * @property useShim
        * @type Boolean
        * @static
        */
        useShim: false,
        /**
        * This property is used to determine if the shim is active over the screen, default false.
        * @private
        * @property _shimActive
        * @type Boolean
        * @static
        */
        _shimActive: false,
        /**
        * This property is used when useShim is set on a DragDrop object to store the current state of DDM.useShim so it can be reset when a drag operation is done.
        * @private
        * @property _shimState
        * @type Boolean
        * @static
        */
        _shimState: false,
        /**
        * This property is used when useShim is set to true, it will set the opacity on the shim to .5 for debugging. Use: (YAHOO.util.DDM._debugShim = true;)
        * @private
        * @property _debugShim
        * @type Boolean
        * @static
        */
        _debugShim: false,
        /**
        * This method will create a shim element (giving it the id of yui-ddm-shim), it also attaches the mousemove and mouseup listeners to it and attaches a scroll listener on the window
        * @private
        * @method _sizeShim
        * @static
        */
        _createShim: function() {
            YAHOO.log('Creating Shim Element', 'info', 'DragDropMgr');
            var s = document.createElement('div');
            s.id = 'yui-ddm-shim';
            if (document.body.firstChild) {
                document.body.insertBefore(s, document.body.firstChild);
            } else {
                document.body.appendChild(s);
            }
            s.style.display = 'none';
            s.style.backgroundColor = 'red';
            s.style.position = 'absolute';
            s.style.zIndex = '99999';
            Dom.setStyle(s, 'opacity', '0');
            this._shim = s;
            Event.on(s, &quot;mouseup&quot;,   this.handleMouseUp, this, true);
            Event.on(s, &quot;mousemove&quot;, this.handleMouseMove, this, true);
            Event.on(window, 'scroll', this._sizeShim, this, true);
        },
        /**
        * This method will size the shim, called from activate and on window scroll event
        * @private
        * @method _sizeShim
        * @static
        */
        _sizeShim: function() {
            if (this._shimActive) {
                YAHOO.log('Sizing Shim', 'info', 'DragDropMgr');
                var s = this._shim;
                s.style.height = Dom.getDocumentHeight() + 'px';
                s.style.width = Dom.getDocumentWidth() + 'px';
                s.style.top = '0';
                s.style.left = '0';
            }
        },
        /**
        * This method will create the shim element if needed, then show the shim element, size the element and set the _shimActive property to true
        * @private
        * @method _activateShim
        * @static
        */
        _activateShim: function() {
            if (this.useShim) {
                YAHOO.log('Activating Shim', 'info', 'DragDropMgr');
                if (!this._shim) {
                    this._createShim();
                }
                this._shimActive = true;
                var s = this._shim,
                    o = '0';
                if (this._debugShim) {
                    o = '.5';
                }
                Dom.setStyle(s, 'opacity', o);
                this._sizeShim();
                s.style.display = 'block';
            }
        },
        /**
        * This method will hide the shim element and set the _shimActive property to false
        * @private
        * @method _deactivateShim
        * @static
        */
        _deactivateShim: function() {
            YAHOO.log('Deactivating Shim', 'info', 'DragDropMgr');
            this._shim.style.display = 'none';
            this._shimActive = false;
        },
        /**
        * The HTML element created to use as a shim over the document to track mouse movements
        * @private
        * @property _shim
        * @type HTMLElement
        * @static
        */
        _shim: null,
        /**
         * Two dimensional Array of registered DragDrop objects.  The first 
         * dimension is the DragDrop item group, the second the DragDrop 
         * object.
         * @property ids
         * @type {string: string}
         * @private
         * @static
         */
        ids: {},

        /**
         * Array of element ids defined as drag handles.  Used to determine 
         * if the element that generated the mousedown event is actually the 
         * handle and not the html element itself.
         * @property handleIds
         * @type {string: string}
         * @private
         * @static
         */
        handleIds: {},

        /**
         * the DragDrop object that is currently being dragged
         * @property dragCurrent
         * @type DragDrop
         * @private
         * @static
         **/
        dragCurrent: null,

        /**
         * the DragDrop object(s) that are being hovered over
         * @property dragOvers
         * @type Array
         * @private
         * @static
         */
        dragOvers: {},

        /**
         * the X distance between the cursor and the object being dragged
         * @property deltaX
         * @type int
         * @private
         * @static
         */
        deltaX: 0,

        /**
         * the Y distance between the cursor and the object being dragged
         * @property deltaY
         * @type int
         * @private
         * @static
         */
        deltaY: 0,

        /**
         * Flag to determine if we should prevent the default behavior of the
         * events we define. By default this is true, but this can be set to 
         * false if you need the default behavior (not recommended)
         * @property preventDefault
         * @type boolean
         * @static
         */
        preventDefault: true,

        /**
         * Flag to determine if we should stop the propagation of the events 
         * we generate. This is true by default but you may want to set it to
         * false if the html element contains other features that require the
         * mouse click.
         * @property stopPropagation
         * @type boolean
         * @static
         */
        stopPropagation: true,

        /**
         * Internal flag that is set to true when drag and drop has been
         * initialized
         * @property initialized
         * @private
         * @static
         */
        initialized: false,

        /**
         * All drag and drop can be disabled.
         * @property locked
         * @private
         * @static
         */
        locked: false,

        /**
         * Provides additional information about the the current set of
         * interactions.  Can be accessed from the event handlers. It
         * contains the following properties:
         *
         *       out:       onDragOut interactions
         *       enter:     onDragEnter interactions
         *       over:      onDragOver interactions
         *       drop:      onDragDrop interactions
         *       point:     The location of the cursor
         *       draggedRegion: The location of dragged element at the time
         *                      of the interaction
         *       sourceRegion: The location of the source elemtn at the time
         *                     of the interaction
         *       validDrop: boolean
         * @property interactionInfo
         * @type object
         * @static
         */
        interactionInfo: null,

        /**
         * Called the first time an element is registered.
         * @method init
         * @private
         * @static
         */
        init: function() {
            this.initialized = true;
        },

        /**
         * In point mode, drag and drop interaction is defined by the 
         * location of the cursor during the drag/drop
         * @property POINT
         * @type int
         * @static
         * @final
         */
        POINT: 0,

        /**
         * In intersect mode, drag and drop interaction is defined by the 
         * cursor position or the amount of overlap of two or more drag and 
         * drop objects.
         * @property INTERSECT
         * @type int
         * @static
         * @final
         */
        INTERSECT: 1,

        /**
         * In intersect mode, drag and drop interaction is defined only by the 
         * overlap of two or more drag and drop objects.
         * @property STRICT_INTERSECT
         * @type int
         * @static
         * @final
         */
        STRICT_INTERSECT: 2,

        /**
         * The current drag and drop mode.  Default: POINT
         * @property mode
         * @type int
         * @static
         */
        mode: 0,

        /**
         * Runs method on all drag and drop objects
         * @method _execOnAll
         * @private
         * @static
         */
        _execOnAll: function(sMethod, args) {
            for (var i in this.ids) {
                for (var j in this.ids[i]) {
                    var oDD = this.ids[i][j];
                    if (! this.isTypeOfDD(oDD)) {
                        continue;
                    }
                    oDD[sMethod].apply(oDD, args);
                }
            }
        },

        /**
         * Drag and drop initialization.  Sets up the global event handlers
         * @method _onLoad
         * @private
         * @static
         */
        _onLoad: function() {

            this.init();

            YAHOO.log(&quot;DragDropMgr onload&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
            Event.on(document, &quot;mouseup&quot;,   this.handleMouseUp, this, true);
            Event.on(document, &quot;mousemove&quot;, this.handleMouseMove, this, true);
            Event.on(window,   &quot;unload&quot;,    this._onUnload, this, true);
            Event.on(window,   &quot;resize&quot;,    this._onResize, this, true);
            // Event.on(window,   &quot;mouseout&quot;,    this._test);

        },

        /**
         * Reset constraints on all drag and drop objs
         * @method _onResize
         * @private
         * @static
         */
        _onResize: function(e) {
            YAHOO.log(&quot;window resize&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
            this._execOnAll(&quot;resetConstraints&quot;, []);
        },

        /**
         * Lock all drag and drop functionality
         * @method lock
         * @static
         */
        lock: function() { this.locked = true; },

        /**
         * Unlock all drag and drop functionality
         * @method unlock
         * @static
         */
        unlock: function() { this.locked = false; },

        /**
         * Is drag and drop locked?
         * @method isLocked
         * @return {boolean} True if drag and drop is locked, false otherwise.
         * @static
         */
        isLocked: function() { return this.locked; },

        /**
         * Location cache that is set for all drag drop objects when a drag is
         * initiated, cleared when the drag is finished.
         * @property locationCache
         * @private
         * @static
         */
        locationCache: {},

        /**
         * Set useCache to false if you want to force object the lookup of each
         * drag and drop linked element constantly during a drag.
         * @property useCache
         * @type boolean
         * @static
         */
        useCache: true,

        /**
         * The number of pixels that the mouse needs to move after the 
         * mousedown before the drag is initiated.  Default=3;
         * @property clickPixelThresh
         * @type int
         * @static
         */
        clickPixelThresh: 3,

        /**
         * The number of milliseconds after the mousedown event to initiate the
         * drag if we don't get a mouseup event. Default=1000
         * @property clickTimeThresh
         * @type int
         * @static
         */
        clickTimeThresh: 1000,

        /**
         * Flag that indicates that either the drag pixel threshold or the 
         * mousdown time threshold has been met
         * @property dragThreshMet
         * @type boolean
         * @private
         * @static
         */
        dragThreshMet: false,

        /**
         * Timeout used for the click time threshold
         * @property clickTimeout
         * @type Object
         * @private
         * @static
         */
        clickTimeout: null,

        /**
         * The X position of the mousedown event stored for later use when a 
         * drag threshold is met.
         * @property startX
         * @type int
         * @private
         * @static
         */
        startX: 0,

        /**
         * The Y position of the mousedown event stored for later use when a 
         * drag threshold is met.
         * @property startY
         * @type int
         * @private
         * @static
         */
        startY: 0,

        /**
         * Flag to determine if the drag event was fired from the click timeout and
         * not the mouse move threshold.
         * @property fromTimeout
         * @type boolean
         * @private
         * @static
         */
        fromTimeout: false,

        /**
         * Each DragDrop instance must be registered with the DragDropMgr.  
         * This is executed in DragDrop.init()
         * @method regDragDrop
         * @param {DragDrop} oDD the DragDrop object to register
         * @param {String} sGroup the name of the group this element belongs to
         * @static
         */
        regDragDrop: function(oDD, sGroup) {
            if (!this.initialized) { this.init(); }
            
            if (!this.ids[sGroup]) {
                this.ids[sGroup] = {};
            }
            this.ids[sGroup][oDD.id] = oDD;
        },

        /**
         * Removes the supplied dd instance from the supplied group. Executed
         * by DragDrop.removeFromGroup, so don't call this function directly.
         * @method removeDDFromGroup
         * @private
         * @static
         */
        removeDDFromGroup: function(oDD, sGroup) {
            if (!this.ids[sGroup]) {
                this.ids[sGroup] = {};
            }

            var obj = this.ids[sGroup];
            if (obj &amp;&amp; obj[oDD.id]) {
                delete obj[oDD.id];
            }
        },

        /**
         * Unregisters a drag and drop item.  This is executed in 
         * DragDrop.unreg, use that method instead of calling this directly.
         * @method _remove
         * @private
         * @static
         */
        _remove: function(oDD) {
            for (var g in oDD.groups) {
                if (g) {
                    var item = this.ids[g];
                    if (item &amp;&amp; item[oDD.id]) {
                        delete item[oDD.id];
                    }
                }
                
            }
            delete this.handleIds[oDD.id];
        },

        /**
         * Each DragDrop handle element must be registered.  This is done
         * automatically when executing DragDrop.setHandleElId()
         * @method regHandle
         * @param {String} sDDId the DragDrop id this element is a handle for
         * @param {String} sHandleId the id of the element that is the drag 
         * handle
         * @static
         */
        regHandle: function(sDDId, sHandleId) {
            if (!this.handleIds[sDDId]) {
                this.handleIds[sDDId] = {};
            }
            this.handleIds[sDDId][sHandleId] = sHandleId;
        },

        /**
         * Utility function to determine if a given element has been 
         * registered as a drag drop item.
         * @method isDragDrop
         * @param {String} id the element id to check
         * @return {boolean} true if this element is a DragDrop item, 
         * false otherwise
         * @static
         */
        isDragDrop: function(id) {
            return ( this.getDDById(id) ) ? true : false;
        },

        /**
         * Returns the drag and drop instances that are in all groups the
         * passed in instance belongs to.
         * @method getRelated
         * @param {DragDrop} p_oDD the obj to get related data for
         * @param {boolean} bTargetsOnly if true, only return targetable objs
         * @return {DragDrop[]} the related instances
         * @static
         */
        getRelated: function(p_oDD, bTargetsOnly) {
            var oDDs = [];
            for (var i in p_oDD.groups) {
                for (var j in this.ids[i]) {
                    var dd = this.ids[i][j];
                    if (! this.isTypeOfDD(dd)) {
                        continue;
                    }
                    if (!bTargetsOnly || dd.isTarget) {
                        oDDs[oDDs.length] = dd;
                    }
                }
            }

            return oDDs;
        },

        /**
         * Returns true if the specified dd target is a legal target for 
         * the specifice drag obj
         * @method isLegalTarget
         * @param {DragDrop} the drag obj
         * @param {DragDrop} the target
         * @return {boolean} true if the target is a legal target for the 
         * dd obj
         * @static
         */
        isLegalTarget: function (oDD, oTargetDD) {
            var targets = this.getRelated(oDD, true);
            for (var i=0, len=targets.length;i&lt;len;++i) {
                if (targets[i].id == oTargetDD.id) {
                    return true;
                }
            }

            return false;
        },

        /**
         * My goal is to be able to transparently determine if an object is
         * typeof DragDrop, and the exact subclass of DragDrop.  typeof 
         * returns &quot;object&quot;, oDD.constructor.toString() always returns
         * &quot;DragDrop&quot; and not the name of the subclass.  So for now it just
         * evaluates a well-known variable in DragDrop.
         * @method isTypeOfDD
         * @param {Object} the object to evaluate
         * @return {boolean} true if typeof oDD = DragDrop
         * @static
         */
        isTypeOfDD: function (oDD) {
            return (oDD &amp;&amp; oDD.__ygDragDrop);
        },

        /**
         * Utility function to determine if a given element has been 
         * registered as a drag drop handle for the given Drag Drop object.
         * @method isHandle
         * @param {String} id the element id to check
         * @return {boolean} true if this element is a DragDrop handle, false 
         * otherwise
         * @static
         */
        isHandle: function(sDDId, sHandleId) {
            return ( this.handleIds[sDDId] &amp;&amp; 
                            this.handleIds[sDDId][sHandleId] );
        },

        /**
         * Returns the DragDrop instance for a given id
         * @method getDDById
         * @param {String} id the id of the DragDrop object
         * @return {DragDrop} the drag drop object, null if it is not found
         * @static
         */
        getDDById: function(id) {
            for (var i in this.ids) {
                if (this.ids[i][id]) {
                    return this.ids[i][id];
                }
            }
            return null;
        },

        /**
         * Fired after a registered DragDrop object gets the mousedown event.
         * Sets up the events required to track the object being dragged
         * @method handleMouseDown
         * @param {Event} e the event
         * @param oDD the DragDrop object being dragged
         * @private
         * @static
         */
        handleMouseDown: function(e, oDD) {
            //this._activateShim();

            this.currentTarget = YAHOO.util.Event.getTarget(e);

            this.dragCurrent = oDD;

            var el = oDD.getEl();

            // track start position
            this.startX = YAHOO.util.Event.getPageX(e);
            this.startY = YAHOO.util.Event.getPageY(e);

            this.deltaX = this.startX - el.offsetLeft;
            this.deltaY = this.startY - el.offsetTop;

            this.dragThreshMet = false;

            this.clickTimeout = setTimeout( 
                    function() { 
                        var DDM = YAHOO.util.DDM;
                        DDM.startDrag(DDM.startX, DDM.startY);
                        DDM.fromTimeout = true;
                    }, 
                    this.clickTimeThresh );
        },

        /**
         * Fired when either the drag pixel threshold or the mousedown hold 
         * time threshold has been met.
         * @method startDrag
         * @param x {int} the X position of the original mousedown
         * @param y {int} the Y position of the original mousedown
         * @static
         */
        startDrag: function(x, y) {
            if (this.dragCurrent &amp;&amp; this.dragCurrent.useShim) {
                this._shimState = this.useShim;
                this.useShim = true;
            }
            this._activateShim();
            YAHOO.log(&quot;firing drag start events&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
            clearTimeout(this.clickTimeout);
            var dc = this.dragCurrent;
            if (dc &amp;&amp; dc.events.b4StartDrag) {
                dc.b4StartDrag(x, y);
                dc.fireEvent('b4StartDragEvent', { x: x, y: y });
            }
            if (dc &amp;&amp; dc.events.startDrag) {
                dc.startDrag(x, y);
                dc.fireEvent('startDragEvent', { x: x, y: y });
            }
            this.dragThreshMet = true;
        },

        /**
         * Internal function to handle the mouseup event.  Will be invoked 
         * from the context of the document.
         * @method handleMouseUp
         * @param {Event} e the event
         * @private
         * @static
         */
        handleMouseUp: function(e) {
            if (this.dragCurrent) {
                clearTimeout(this.clickTimeout);

                if (this.dragThreshMet) {
                    YAHOO.log(&quot;mouseup detected - completing drag&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                    if (this.fromTimeout) {
                        YAHOO.log('fromTimeout is true (mouse didn\'t move), call handleMouseMove so we can get the dragOver event', 'info', 'DragDropMgr');
                        this.fromTimeout = false;
                        this.handleMouseMove(e);
                    }
                    this.fromTimeout = false;
                    this.fireEvents(e, true);
                } else {
                    YAHOO.log(&quot;drag threshold not met&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                }

                this.stopDrag(e);

                this.stopEvent(e);
            }
        },

        /**
         * Utility to stop event propagation and event default, if these 
         * features are turned on.
         * @method stopEvent
         * @param {Event} e the event as returned by this.getEvent()
         * @static
         */
        stopEvent: function(e) {
            if (this.stopPropagation) {
                YAHOO.util.Event.stopPropagation(e);
            }

            if (this.preventDefault) {
                YAHOO.util.Event.preventDefault(e);
            }
        },

        /** 
         * Ends the current drag, cleans up the state, and fires the endDrag
         * and mouseUp events.  Called internally when a mouseup is detected
         * during the drag.  Can be fired manually during the drag by passing
         * either another event (such as the mousemove event received in onDrag)
         * or a fake event with pageX and pageY defined (so that endDrag and
         * onMouseUp have usable position data.).  Alternatively, pass true
         * for the silent parameter so that the endDrag and onMouseUp events
         * are skipped (so no event data is needed.)
         *
         * @method stopDrag
         * @param {Event} e the mouseup event, another event (or a fake event) 
         *                  with pageX and pageY defined, or nothing if the 
         *                  silent parameter is true
         * @param {boolean} silent skips the enddrag and mouseup events if true
         * @static
         */
        stopDrag: function(e, silent) {
            // YAHOO.log(&quot;mouseup - removing event handlers&quot;);
            var dc = this.dragCurrent;
            // Fire the drag end event for the item that was dragged
            if (dc &amp;&amp; !silent) {
                if (this.dragThreshMet) {
                    YAHOO.log(&quot;firing endDrag events&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                    if (dc.events.b4EndDrag) {
                        dc.b4EndDrag(e);
                        dc.fireEvent('b4EndDragEvent', { e: e });
                    }
                    if (dc.events.endDrag) {
                        dc.endDrag(e);
                        dc.fireEvent('endDragEvent', { e: e });
                    }
                }
                if (dc.events.mouseUp) {
                    YAHOO.log(&quot;firing dragdrop onMouseUp event&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                    dc.onMouseUp(e);
                    dc.fireEvent('mouseUpEvent', { e: e });
                }
            }

            if (this._shimActive) {
                this._deactivateShim();
                if (this.dragCurrent &amp;&amp; this.dragCurrent.useShim) {
                    this.useShim = this._shimState;
                    this._shimState = false;
                }
            }

            this.dragCurrent = null;
            this.dragOvers = {};
        },

        /** 
         * Internal function to handle the mousemove event.  Will be invoked 
         * from the context of the html element.
         *
         * @TODO figure out what we can do about mouse events lost when the 
         * user drags objects beyond the window boundary.  Currently we can 
         * detect this in internet explorer by verifying that the mouse is 
         * down during the mousemove event.  Firefox doesn't give us the 
         * button state on the mousemove event.
         * @method handleMouseMove
         * @param {Event} e the event
         * @private
         * @static
         */
        handleMouseMove: function(e) {
            //YAHOO.log(&quot;handlemousemove&quot;);

            var dc = this.dragCurrent;
            if (dc) {
                // YAHOO.log(&quot;no current drag obj&quot;);

                // var button = e.which || e.button;
                // YAHOO.log(&quot;which: &quot; + e.which + &quot;, button: &quot;+ e.button);

                // check for IE &lt; 9 mouseup outside of page boundary
                if (YAHOO.env.ua.ie &amp;&amp; (YAHOO.env.ua.ie &lt; 9) &amp;&amp; !e.button) {
                    YAHOO.log(&quot;button failure&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                    this.stopEvent(e);
                    return this.handleMouseUp(e);
                } else {
                    if (e.clientX &lt; 0 || e.clientY &lt; 0) {
                        //This will stop the element from leaving the viewport in FF, Opera &amp; Safari
                        //Not turned on yet
                        //YAHOO.log(&quot;Either clientX or clientY is negative, stop the event.&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                        //this.stopEvent(e);
                        //return false;
                    }
                }

                if (!this.dragThreshMet) {
                    var diffX = Math.abs(this.startX - YAHOO.util.Event.getPageX(e));
                    var diffY = Math.abs(this.startY - YAHOO.util.Event.getPageY(e));
                    // YAHOO.log(&quot;diffX: &quot; + diffX + &quot;diffY: &quot; + diffY);
                    if (diffX &gt; this.clickPixelThresh || 
                                diffY &gt; this.clickPixelThresh) {
                        YAHOO.log(&quot;pixel threshold met&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                        this.startDrag(this.startX, this.startY);
                    }
                }

                if (this.dragThreshMet) {
                    if (dc &amp;&amp; dc.events.b4Drag) {
                        dc.b4Drag(e);
                        dc.fireEvent('b4DragEvent', { e: e});
                    }
                    if (dc &amp;&amp; dc.events.drag) {
                        dc.onDrag(e);
                        dc.fireEvent('dragEvent', { e: e});
                    }
                    if (dc) {
                        this.fireEvents(e, false);
                    }
                }

                this.stopEvent(e);
            }
        },
        
        /**
         * Iterates over all of the DragDrop elements to find ones we are 
         * hovering over or dropping on
         * @method fireEvents
         * @param {Event} e the event
         * @param {boolean} isDrop is this a drop op or a mouseover op?
         * @private
         * @static
         */
        fireEvents: function(e, isDrop) {
            var dc = this.dragCurrent;

            // If the user did the mouse up outside of the window, we could 
            // get here even though we have ended the drag.
            // If the config option dragOnly is true, bail out and don't fire the events
            if (!dc || dc.isLocked() || dc.dragOnly) {
                return;
            }

            var x = YAHOO.util.Event.getPageX(e),
                y = YAHOO.util.Event.getPageY(e),
                pt = new YAHOO.util.Point(x,y),
                pos = dc.getTargetCoord(pt.x, pt.y),
                el = dc.getDragEl(),
                events = ['out', 'over', 'drop', 'enter'],
                curRegion = new YAHOO.util.Region( pos.y, 
                                               pos.x + el.offsetWidth,
                                               pos.y + el.offsetHeight, 
                                               pos.x ),
            
                oldOvers = [], // cache the previous dragOver array
                inGroupsObj  = {},
                b4Results = {},
                inGroups  = [],
                data = {
                    outEvts: [],
                    overEvts: [],
                    dropEvts: [],
                    enterEvts: []
                };


            // Check to see if the object(s) we were hovering over is no longer 
            // being hovered over so we can fire the onDragOut event
            for (var i in this.dragOvers) {

                var ddo = this.dragOvers[i];

                if (! this.isTypeOfDD(ddo)) {
                    continue;
                }
                if (! this.isOverTarget(pt, ddo, this.mode, curRegion)) {
                    data.outEvts.push( ddo );
                }

                oldOvers[i] = true;
                delete this.dragOvers[i];
            }

            for (var sGroup in dc.groups) {
                // YAHOO.log(&quot;Processing group &quot; + sGroup);
                
                if (&quot;string&quot; != typeof sGroup) {
                    continue;
                }

                for (i in this.ids[sGroup]) {
                    var oDD = this.ids[sGroup][i];
                    if (! this.isTypeOfDD(oDD)) {
                        continue;
                    }

                    if (oDD.isTarget &amp;&amp; !oDD.isLocked() &amp;&amp; oDD != dc) {
                        if (this.isOverTarget(pt, oDD, this.mode, curRegion)) {
                            inGroupsObj[sGroup] = true;
                            // look for drop interactions
                            if (isDrop) {
                                data.dropEvts.push( oDD );
                            // look for drag enter and drag over interactions
                            } else {

                                // initial drag over: dragEnter fires
                                if (!oldOvers[oDD.id]) {
                                    data.enterEvts.push( oDD );
                                // subsequent drag overs: dragOver fires
                                } else {
                                    data.overEvts.push( oDD );
                                }

                                this.dragOvers[oDD.id] = oDD;
                            }
                        }
                    }
                }
            }

            this.interactionInfo = {
                out:       data.outEvts,
                enter:     data.enterEvts,
                over:      data.overEvts,
                drop:      data.dropEvts,
                point:     pt,
                draggedRegion:    curRegion,
                sourceRegion: this.locationCache[dc.id],
                validDrop: isDrop
            };

            
            for (var inG in inGroupsObj) {
                inGroups.push(inG);
            }

            // notify about a drop that did not find a target
            if (isDrop &amp;&amp; !data.dropEvts.length) {
                YAHOO.log(dc.id + &quot; dropped, but not on a target&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                this.interactionInfo.validDrop = false;
                if (dc.events.invalidDrop) {
                    dc.onInvalidDrop(e);
                    dc.fireEvent('invalidDropEvent', { e: e });
                }
            }
            for (i = 0; i &lt; events.length; i++) {
                var tmp = null;
                if (data[events[i] + 'Evts']) {
                    tmp = data[events[i] + 'Evts'];
                }
                if (tmp &amp;&amp; tmp.length) {
                    var type = events[i].charAt(0).toUpperCase() + events[i].substr(1),
                        ev = 'onDrag' + type,
                        b4 = 'b4Drag' + type,
                        cev = 'drag' + type + 'Event',
                        check = 'drag' + type;
                    if (this.mode) {
                        YAHOO.log(dc.id + ' ' + ev + ': ' + tmp, &quot;info&quot;, &quot;DragDropMgr&quot;);
                        if (dc.events[b4]) {
                            dc[b4](e, tmp, inGroups);
                            b4Results[ev] = dc.fireEvent(b4 + 'Event', { event: e, info: tmp, group: inGroups });
                            
                        }
                        if (dc.events[check] &amp;&amp; (b4Results[ev] !== false)) {
                            dc[ev](e, tmp, inGroups);
                            dc.fireEvent(cev, { event: e, info: tmp, group: inGroups });
                        }
                    } else {
                        for (var b = 0, len = tmp.length; b &lt; len; ++b) {
                            YAHOO.log(dc.id + ' ' + ev + ': ' + tmp[b].id, &quot;info&quot;, &quot;DragDropMgr&quot;);
                            if (dc.events[b4]) {
                                dc[b4](e, tmp[b].id, inGroups[0]);
                                b4Results[ev] = dc.fireEvent(b4 + 'Event', { event: e, info: tmp[b].id, group: inGroups[0] });
                            }
                            if (dc.events[check] &amp;&amp; (b4Results[ev] !== false)) {
                                dc[ev](e, tmp[b].id, inGroups[0]);
                                dc.fireEvent(cev, { event: e, info: tmp[b].id, group: inGroups[0] });
                            }
                        }
                    }
                }
            }
        },

        /**
         * Helper function for getting the best match from the list of drag 
         * and drop objects returned by the drag and drop events when we are 
         * in INTERSECT mode.  It returns either the first object that the 
         * cursor is over, or the object that has the greatest overlap with 
         * the dragged element.
         * @method getBestMatch
         * @param  {DragDrop[]} dds The array of drag and drop objects 
         * targeted
         * @return {DragDrop}       The best single match
         * @static
         */
        getBestMatch: function(dds) {
            var winner = null;

            var len = dds.length;

            if (len == 1) {
                winner = dds[0];
            } else {
                // Loop through the targeted items
                for (var i=0; i&lt;len; ++i) {
                    var dd = dds[i];
                    // If the cursor is over the object, it wins.  If the 
                    // cursor is over multiple matches, the first one we come
                    // to wins.
                    if (this.mode == this.INTERSECT &amp;&amp; dd.cursorIsOver) {
                        winner = dd;
                        break;
                    // Otherwise the object with the most overlap wins
                    } else {
                        if (!winner || !winner.overlap || (dd.overlap &amp;&amp;
                            winner.overlap.getArea() &lt; dd.overlap.getArea())) {
                            winner = dd;
                        }
                    }
                }
            }

            return winner;
        },

        /**
         * Refreshes the cache of the top-left and bottom-right points of the 
         * drag and drop objects in the specified group(s).  This is in the
         * format that is stored in the drag and drop instance, so typical 
         * usage is:
         * &lt;code&gt;
         * YAHOO.util.DragDropMgr.refreshCache(ddinstance.groups);
         * &lt;/code&gt;
         * Alternatively:
         * &lt;code&gt;
         * YAHOO.util.DragDropMgr.refreshCache({group1:true, group2:true});
         * &lt;/code&gt;
         * @TODO this really should be an indexed array.  Alternatively this
         * method could accept both.
         * @method refreshCache
         * @param {Object} groups an associative array of groups to refresh
         * @static
         */
        refreshCache: function(groups) {
            YAHOO.log(&quot;refreshing element location cache&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);

            // refresh everything if group array is not provided
            var g = groups || this.ids;

            for (var sGroup in g) {
                if (&quot;string&quot; != typeof sGroup) {
                    continue;
                }
                for (var i in this.ids[sGroup]) {
                    var oDD = this.ids[sGroup][i];

                    if (this.isTypeOfDD(oDD)) {
                        var loc = this.getLocation(oDD);
                        if (loc) {
                            this.locationCache[oDD.id] = loc;
                        } else {
                            delete this.locationCache[oDD.id];
YAHOO.log(&quot;Could not get the loc for &quot; + oDD.id, &quot;warn&quot;, &quot;DragDropMgr&quot;);
                        }
                    }
                }
            }
        },

        /**
         * This checks to make sure an element exists and is in the DOM.  The
         * main purpose is to handle cases where innerHTML is used to remove
         * drag and drop objects from the DOM.  IE provides an 'unspecified
         * error' when trying to access the offsetParent of such an element
         * @method verifyEl
         * @param {HTMLElement} el the element to check
         * @return {boolean} true if the element looks usable
         * @static
         */
        verifyEl: function(el) {
            try {
                if (el) {
                    var parent = el.offsetParent;
                    if (parent) {
                        return true;
                    }
                }
            } catch(e) {
                YAHOO.log(&quot;detected problem with an element&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
            }

            return false;
        },
        
        /**
         * Returns a Region object containing the drag and drop element's position
         * and size, including the padding configured for it
         * @method getLocation
         * @param {DragDrop} oDD the drag and drop object to get the 
         *                       location for
         * @return {YAHOO.util.Region} a Region object representing the total area
         *                             the element occupies, including any padding
         *                             the instance is configured for.
         * @static
         */
        getLocation: function(oDD) {
            if (! this.isTypeOfDD(oDD)) {
                YAHOO.log(oDD + &quot; is not a DD obj&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                return null;
            }

            var el = oDD.getEl(), pos, x1, x2, y1, y2, t, r, b, l;

            try {
                pos= YAHOO.util.Dom.getXY(el);
            } catch (e) { }

            if (!pos) {
                YAHOO.log(&quot;getXY failed&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                return null;
            }

            x1 = pos[0];
            x2 = x1 + el.offsetWidth;
            y1 = pos[1];
            y2 = y1 + el.offsetHeight;

            t = y1 - oDD.padding[0];
            r = x2 + oDD.padding[1];
            b = y2 + oDD.padding[2];
            l = x1 - oDD.padding[3];

            return new YAHOO.util.Region( t, r, b, l );
        },

        /**
         * Checks the cursor location to see if it over the target
         * @method isOverTarget
         * @param {YAHOO.util.Point} pt The point to evaluate
         * @param {DragDrop} oTarget the DragDrop object we are inspecting
         * @param {boolean} intersect true if we are in intersect mode
         * @param {YAHOO.util.Region} pre-cached location of the dragged element
         * @return {boolean} true if the mouse is over the target
         * @private
         * @static
         */
        isOverTarget: function(pt, oTarget, intersect, curRegion) {
            // use cache if available
            var loc = this.locationCache[oTarget.id];
            if (!loc || !this.useCache) {
                YAHOO.log(&quot;cache not populated&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                loc = this.getLocation(oTarget);
                this.locationCache[oTarget.id] = loc;

                YAHOO.log(&quot;cache: &quot; + loc, &quot;info&quot;, &quot;DragDropMgr&quot;);
            }

            if (!loc) {
                YAHOO.log(&quot;could not get the location of the element&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                return false;
            }

            //YAHOO.log(&quot;loc: &quot; + loc + &quot;, pt: &quot; + pt);
            oTarget.cursorIsOver = loc.contains( pt );

            // DragDrop is using this as a sanity check for the initial mousedown
            // in this case we are done.  In POINT mode, if the drag obj has no
            // contraints, we are done. Otherwise we need to evaluate the 
            // region the target as occupies to determine if the dragged element
            // overlaps with it.
            
            var dc = this.dragCurrent;
            if (!dc || (!intersect &amp;&amp; !dc.constrainX &amp;&amp; !dc.constrainY)) {

                //if (oTarget.cursorIsOver) {
                    //YAHOO.log(&quot;over &quot; + oTarget + &quot;, &quot; + loc + &quot;, &quot; + pt, &quot;warn&quot;);
                //}
                return oTarget.cursorIsOver;
            }

            oTarget.overlap = null;


            // Get the current location of the drag element, this is the
            // location of the mouse event less the delta that represents
            // where the original mousedown happened on the element.  We
            // need to consider constraints and ticks as well.

            if (!curRegion) {
                var pos = dc.getTargetCoord(pt.x, pt.y);
                var el = dc.getDragEl();
                curRegion = new YAHOO.util.Region( pos.y, 
                                                   pos.x + el.offsetWidth,
                                                   pos.y + el.offsetHeight, 
                                                   pos.x );
            }

            var overlap = curRegion.intersect(loc);

            if (overlap) {
                oTarget.overlap = overlap;
                return (intersect) ? true : oTarget.cursorIsOver;
            } else {
                return false;
            }
        },

        /**
         * unload event handler
         * @method _onUnload
         * @private
         * @static
         */
        _onUnload: function(e, me) {
            this.unregAll();
        },

        /**
         * Cleans up the drag and drop events and objects.
         * @method unregAll
         * @private
         * @static
         */
        unregAll: function() {
            YAHOO.log(&quot;unregister all&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);

            if (this.dragCurrent) {
                this.stopDrag();
                this.dragCurrent = null;
            }

            this._execOnAll(&quot;unreg&quot;, []);

            //for (var i in this.elementCache) {
                //delete this.elementCache[i];
            //}
            //this.elementCache = {};

            this.ids = {};
        },

        /**
         * A cache of DOM elements
         * @property elementCache
         * @private
         * @static
         * @deprecated elements are not cached now
         */
        elementCache: {},
        
        /**
         * Get the wrapper for the DOM element specified
         * @method getElWrapper
         * @param {String} id the id of the element to get
         * @return {YAHOO.util.DDM.ElementWrapper} the wrapped element
         * @private
         * @deprecated This wrapper isn't that useful
         * @static
         */
        getElWrapper: function(id) {
            var oWrapper = this.elementCache[id];
            if (!oWrapper || !oWrapper.el) {
                oWrapper = this.elementCache[id] = 
                    new this.ElementWrapper(YAHOO.util.Dom.get(id));
            }
            return oWrapper;
        },

        /**
         * Returns the actual DOM element
         * @method getElement
         * @param {String} id the id of the elment to get
         * @return {Object} The element
         * @deprecated use YAHOO.util.Dom.get instead
         * @static
         */
        getElement: function(id) {
            return YAHOO.util.Dom.get(id);
        },
        
        /**
         * Returns the style property for the DOM element (i.e., 
         * document.getElById(id).style)
         * @method getCss
         * @param {String} id the id of the elment to get
         * @return {Object} The style property of the element
         * @deprecated use YAHOO.util.Dom instead
         * @static
         */
        getCss: function(id) {
            var el = YAHOO.util.Dom.get(id);
            return (el) ? el.style : null;
        },

        /**
         * Inner class for cached elements
         * @class DragDropMgr.ElementWrapper
         * @for DragDropMgr
         * @private
         * @deprecated
         */
        ElementWrapper: function(el) {
                /**
                 * The element
                 * @property el
                 */
                this.el = el || null;
                /**
                 * The element id
                 * @property id
                 */
                this.id = this.el &amp;&amp; el.id;
                /**
                 * A reference to the style property
                 * @property css
                 */
                this.css = this.el &amp;&amp; el.style;
            },

        /**
         * Returns the X position of an html element
         * @method getPosX
         * @param el the element for which to get the position
         * @return {int} the X coordinate
         * @for DragDropMgr
         * @deprecated use YAHOO.util.Dom.getX instead
         * @static
         */
        getPosX: function(el) {
            return YAHOO.util.Dom.getX(el);
        },

        /**
         * Returns the Y position of an html element
         * @method getPosY
         * @param el the element for which to get the position
         * @return {int} the Y coordinate
         * @deprecated use YAHOO.util.Dom.getY instead
         * @static
         */
        getPosY: function(el) {
            return YAHOO.util.Dom.getY(el); 
        },

        /**
         * Swap two nodes.  In IE, we use the native method, for others we 
         * emulate the IE behavior
         * @method swapNode
         * @param n1 the first node to swap
         * @param n2 the other node to swap
         * @static
         */
        swapNode: function(n1, n2) {
            if (n1.swapNode) {
                n1.swapNode(n2);
            } else {
                var p = n2.parentNode;
                var s = n2.nextSibling;

                if (s == n1) {
                    p.insertBefore(n1, n2);
                } else if (n2 == n1.nextSibling) {
                    p.insertBefore(n2, n1);
                } else {
                    n1.parentNode.replaceChild(n2, n1);
                    p.insertBefore(n1, s);
                }
            }
        },

        /**
         * Returns the current scroll position
         * @method getScroll
         * @private
         * @static
         */
        getScroll: function () {
            var t, l, dde=document.documentElement, db=document.body;
            if (dde &amp;&amp; (dde.scrollTop || dde.scrollLeft)) {
                t = dde.scrollTop;
                l = dde.scrollLeft;
            } else if (db) {
                t = db.scrollTop;
                l = db.scrollLeft;
            } else {
                YAHOO.log(&quot;could not get scroll property&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
            }
            return { top: t, left: l };
        },

        /**
         * Returns the specified element style property
         * @method getStyle
         * @param {HTMLElement} el          the element
         * @param {string}      styleProp   the style property
         * @return {string} The value of the style property
         * @deprecated use YAHOO.util.Dom.getStyle
         * @static
         */
        getStyle: function(el, styleProp) {
            return YAHOO.util.Dom.getStyle(el, styleProp);
        },

        /**
         * Gets the scrollTop
         * @method getScrollTop
         * @return {int} the document's scrollTop
         * @static
         */
        getScrollTop: function () { return this.getScroll().top; },

        /**
         * Gets the scrollLeft
         * @method getScrollLeft
         * @return {int} the document's scrollTop
         * @static
         */
        getScrollLeft: function () { return this.getScroll().left; },

        /**
         * Sets the x/y position of an element to the location of the
         * target element.
         * @method moveToEl
         * @param {HTMLElement} moveEl      The element to move
         * @param {HTMLElement} targetEl    The position reference element
         * @static
         */
        moveToEl: function (moveEl, targetEl) {
            var aCoord = YAHOO.util.Dom.getXY(targetEl);
            YAHOO.log(&quot;moveToEl: &quot; + aCoord, &quot;info&quot;, &quot;DragDropMgr&quot;);
            YAHOO.util.Dom.setXY(moveEl, aCoord);
        },

        /**
         * Gets the client height
         * @method getClientHeight
         * @return {int} client height in px
         * @deprecated use YAHOO.util.Dom.getViewportHeight instead
         * @static
         */
        getClientHeight: function() {
            return YAHOO.util.Dom.getViewportHeight();
        },

        /**
         * Gets the client width
         * @method getClientWidth
         * @return {int} client width in px
         * @deprecated use YAHOO.util.Dom.getViewportWidth instead
         * @static
         */
        getClientWidth: function() {
            return YAHOO.util.Dom.getViewportWidth();
        },

        /**
         * Numeric array sort function
         * @method numericSort
         * @static
         */
        numericSort: function(a, b) { return (a - b); },

        /**
         * Internal counter
         * @property _timeoutCount
         * @private
         * @static
         */
        _timeoutCount: 0,

        /**
         * Trying to make the load order less important.  Without this we get
         * an error if this file is loaded before the Event Utility.
         * @method _addListeners
         * @private
         * @static
         */
        _addListeners: function() {
            var DDM = YAHOO.util.DDM;
            if ( YAHOO.util.Event &amp;&amp; document ) {
                DDM._onLoad();
            } else {
                if (DDM._timeoutCount &gt; 2000) {
                    YAHOO.log(&quot;DragDrop requires the Event Utility&quot;, &quot;error&quot;, &quot;DragDropMgr&quot;);
                } else {
                    setTimeout(DDM._addListeners, 10);
                    if (document &amp;&amp; document.body) {
                        DDM._timeoutCount += 1;
                    }
                }
            }
        },

        /**
         * Recursively searches the immediate parent and all child nodes for 
         * the handle element in order to determine wheter or not it was 
         * clicked.
         * @method handleWasClicked
         * @param node the html element to inspect
         * @static
         */
        handleWasClicked: function(node, id) {
            if (this.isHandle(id, node.id)) {
                YAHOO.log(&quot;clicked node is a handle&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                return true;
            } else {
                // check to see if this is a text node child of the one we want
                var p = node.parentNode;
                // YAHOO.log(&quot;p: &quot; + p);

                while (p) {
                    if (this.isHandle(id, p.id)) {
                        return true;
                    } else {
                        YAHOO.log(p.id + &quot; is not a handle&quot;, &quot;info&quot;, &quot;DragDropMgr&quot;);
                        p = p.parentNode;
                    }
                }
            }

            return false;
        }

    };

}();

// shorter alias, save a few bytes
YAHOO.util.DDM = YAHOO.util.DragDropMgr;
YAHOO.util.DDM._addListeners();

}

(function() {

var Event=YAHOO.util.Event; 
var Dom=YAHOO.util.Dom;

/**
 * Defines the interface and base operation of items that that can be 
 * dragged or can be drop targets.  It was designed to be extended, overriding
 * the event handlers for startDrag, onDrag, onDragOver, onDragOut.
 * Up to three html elements can be associated with a DragDrop instance:
 * &lt;ul&gt;
 * &lt;li&gt;linked element: the element that is passed into the constructor.
 * This is the element which defines the boundaries for interaction with 
 * other DragDrop objects.&lt;/li&gt;
 * &lt;li&gt;handle element(s): The drag operation only occurs if the element that 
 * was clicked matches a handle element.  By default this is the linked 
 * element, but there are times that you will want only a portion of the 
 * linked element to initiate the drag operation, and the setHandleElId() 
 * method provides a way to define this.&lt;/li&gt;
 * &lt;li&gt;drag element: this represents an the element that would be moved along
 * with the cursor during a drag operation.  By default, this is the linked
 * element itself as in {@link YAHOO.util.DD}.  setDragElId() lets you define
 * a separate element that would be moved, as in {@link YAHOO.util.DDProxy}
 * &lt;/li&gt;
 * &lt;/ul&gt;
 * This class should not be instantiated until the onload event to ensure that
 * the associated elements are available.
 * The following would define a DragDrop obj that would interact with any 
 * other DragDrop obj in the &quot;group1&quot; group:
 * &lt;pre&gt;
 *  dd = new YAHOO.util.DragDrop(&quot;div1&quot;, &quot;group1&quot;);
 * &lt;/pre&gt;
 * Since none of the event handlers have been implemented, nothing would 
 * actually happen if you were to run the code above.  Normally you would 
 * override this class or one of the default implementations, but you can 
 * also override the methods you want on an instance of the class...
 * &lt;pre&gt;
 *  dd.onDragDrop = function(e, id) {
 *  &amp;nbsp;&amp;nbsp;alert(&quot;dd was dropped on &quot; + id);
 *  }
 * &lt;/pre&gt;
 * @namespace YAHOO.util
 * @class DragDrop
 * @constructor
 * @param {String} id of the element that is linked to this instance
 * @param {String} sGroup the group of related DragDrop objects
 * @param {object} config an object containing configurable attributes
 *                Valid properties for DragDrop: 
 *                    padding, isTarget, maintainOffset, primaryButtonOnly,
 */
YAHOO.util.DragDrop = function(id, sGroup, config) {
    if (id) {
        this.init(id, sGroup, config); 
    }
};

YAHOO.util.DragDrop.prototype = {
    /**
     * An Object Literal containing the events that we will be using: mouseDown, b4MouseDown, mouseUp, b4StartDrag, startDrag, b4EndDrag, endDrag, mouseUp, drag, b4Drag, invalidDrop, b4DragOut, dragOut, dragEnter, b4DragOver, dragOver, b4DragDrop, dragDrop
     * By setting any of these to false, then event will not be fired.
     * @property events
     * @type object
     */
    events: null,
    /**
    * @method on
    * @description Shortcut for EventProvider.subscribe, see &lt;a href=&quot;YAHOO.util.EventProvider.html#subscribe&quot;&gt;YAHOO.util.EventProvider.subscribe&lt;/a&gt;
    */
    on: function() {
        this.subscribe.apply(this, arguments);
    },
    /**
     * The id of the element associated with this object.  This is what we 
     * refer to as the &quot;linked element&quot; because the size and position of 
     * this element is used to determine when the drag and drop objects have 
     * interacted.
     * @property id
     * @type String
     */
    id: null,

    /**
     * Configuration attributes passed into the constructor
     * @property config
     * @type object
     */
    config: null,

    /**
     * The id of the element that will be dragged.  By default this is same 
     * as the linked element , but could be changed to another element. Ex: 
     * YAHOO.util.DDProxy
     * @property dragElId
     * @type String
     * @private
     */
    dragElId: null, 

    /**
     * the id of the element that initiates the drag operation.  By default 
     * this is the linked element, but could be changed to be a child of this
     * element.  This lets us do things like only starting the drag when the 
     * header element within the linked html element is clicked.
     * @property handleElId
     * @type String
     * @private
     */
    handleElId: null, 

    /**
     * An associative array of HTML tags that will be ignored if clicked.
     * @property invalidHandleTypes
     * @type {string: string}
     */
    invalidHandleTypes: null, 

    /**
     * An associative array of ids for elements that will be ignored if clicked
     * @property invalidHandleIds
     * @type {string: string}
     */
    invalidHandleIds: null, 

    /**
     * An indexted array of css class names for elements that will be ignored
     * if clicked.
     * @property invalidHandleClasses
     * @type string[]
     */
    invalidHandleClasses: null, 

    /**
     * The linked element's absolute X position at the time the drag was 
     * started
     * @property startPageX
     * @type int
     * @private
     */
    startPageX: 0,

    /**
     * The linked element's absolute X position at the time the drag was 
     * started
     * @property startPageY
     * @type int
     * @private
     */
    startPageY: 0,

    /**
     * The group defines a logical collection of DragDrop objects that are 
     * related.  Instances only get events when interacting with other 
     * DragDrop object in the same group.  This lets us define multiple 
     * groups using a single DragDrop subclass if we want.
     * @property groups
     * @type {string: string}
     */
    groups: null,

    /**
     * Individual drag/drop instances can be locked.  This will prevent 
     * onmousedown start drag.
     * @property locked
     * @type boolean
     * @private
     */
    locked: false,

    /**
     * Lock this instance
     * @method lock
     */
    lock: function() { this.locked = true; },

    /**
     * Unlock this instace
     * @method unlock
     */
    unlock: function() { this.locked = false; },

    /**
     * By default, all instances can be a drop target.  This can be disabled by
     * setting isTarget to false.
     * @property isTarget
     * @type boolean
     */
    isTarget: true,

    /**
     * The padding configured for this drag and drop object for calculating
     * the drop zone intersection with this object.
     * @property padding
     * @type int[]
     */
    padding: null,
    /**
     * If this flag is true, do not fire drop events. The element is a drag only element (for movement not dropping)
     * @property dragOnly
     * @type Boolean
     */
    dragOnly: false,

    /**
     * If this flag is true, a shim will be placed over the screen/viewable area to track mouse events. Should help with dragging elements over iframes and other controls.
     * @property useShim
     * @type Boolean
     */
    useShim: false,

    /**
     * Cached reference to the linked element
     * @property _domRef
     * @private
     */
    _domRef: null,

    /**
     * Internal typeof flag
     * @property __ygDragDrop
     * @private
     */
    __ygDragDrop: true,

    /**
     * Set to true when horizontal contraints are applied
     * @property constrainX
     * @type boolean
     * @private
     */
    constrainX: false,

    /**
     * Set to true when vertical contraints are applied
     * @property constrainY
     * @type boolean
     * @private
     */
    constrainY: false,

    /**
     * The left constraint
     * @property minX
     * @type int
     * @private
     */
    minX: 0,

    /**
     * The right constraint
     * @property maxX
     * @type int
     * @private
     */
    maxX: 0,

    /**
     * The up constraint 
     * @property minY
     * @type int
     * @type int
     * @private
     */
    minY: 0,

    /**
     * The down constraint 
     * @property maxY
     * @type int
     * @private
     */
    maxY: 0,

    /**
     * The difference between the click position and the source element's location
     * @property deltaX
     * @type int
     * @private
     */
    deltaX: 0,

    /**
     * The difference between the click position and the source element's location
     * @property deltaY
     * @type int
     * @private
     */
    deltaY: 0,

    /**
     * Maintain offsets when we resetconstraints.  Set to true when you want
     * the position of the element relative to its parent to stay the same
     * when the page changes
     *
     * @property maintainOffset
     * @type boolean
     */
    maintainOffset: false,

    /**
     * Array of pixel locations the element will snap to if we specified a 
     * horizontal graduation/interval.  This array is generated automatically
     * when you define a tick interval.
     * @property xTicks
     * @type int[]
     */
    xTicks: null,

    /**
     * Array of pixel locations the element will snap to if we specified a 
     * vertical graduation/interval.  This array is generated automatically 
     * when you define a tick interval.
     * @property yTicks
     * @type int[]
     */
    yTicks: null,

    /**
     * By default the drag and drop instance will only respond to the primary
     * button click (left button for a right-handed mouse).  Set to true to
     * allow drag and drop to start with any mouse click that is propogated
     * by the browser
     * @property primaryButtonOnly
     * @type boolean
     */
    primaryButtonOnly: true,

    /**
     * The availabe property is false until the linked dom element is accessible.
     * @property available
     * @type boolean
     */
    available: false,

    /**
     * By default, drags can only be initiated if the mousedown occurs in the
     * region the linked element is.  This is done in part to work around a
     * bug in some browsers that mis-report the mousedown if the previous
     * mouseup happened outside of the window.  This property is set to true
     * if outer handles are defined.
     *
     * @property hasOuterHandles
     * @type boolean
     * @default false
     */
    hasOuterHandles: false,

    /**
     * Property that is assigned to a drag and drop object when testing to
     * see if it is being targeted by another dd object.  This property
     * can be used in intersect mode to help determine the focus of
     * the mouse interaction.  DDM.getBestMatch uses this property first to
     * determine the closest match in INTERSECT mode when multiple targets
     * are part of the same interaction.
     * @property cursorIsOver
     * @type boolean
     */
    cursorIsOver: false,

    /**
     * Property that is assigned to a drag and drop object when testing to
     * see if it is being targeted by another dd object.  This is a region
     * that represents the area the draggable element overlaps this target.
     * DDM.getBestMatch uses this property to compare the size of the overlap
     * to that of other targets in order to determine the closest match in
     * INTERSECT mode when multiple targets are part of the same interaction.
     * @property overlap 
     * @type YAHOO.util.Region
     */
    overlap: null,

    /**
     * Code that executes immediately before the startDrag event
     * @method b4StartDrag
     * @private
     */
    b4StartDrag: function(x, y) { },

    /**
     * Abstract method called after a drag/drop object is clicked
     * and the drag or mousedown time thresholds have beeen met.
     * @method startDrag
     * @param {int} X click location
     * @param {int} Y click location
     */
    startDrag: function(x, y) { /* override this */ },

    /**
     * Code that executes immediately before the onDrag event
     * @method b4Drag
     * @private
     */
    b4Drag: function(e) { },

    /**
     * Abstract method called during the onMouseMove event while dragging an 
     * object.
     * @method onDrag
     * @param {Event} e the mousemove event
     */
    onDrag: function(e) { /* override this */ },

    /**
     * Abstract method called when this element fist begins hovering over 
     * another DragDrop obj
     * @method onDragEnter
     * @param {Event} e the mousemove event
     * @param {String|DragDrop[]} id In POINT mode, the element
     * id this is hovering over.  In INTERSECT mode, an array of one or more 
     * dragdrop items being hovered over.
     */
    onDragEnter: function(e, id) { /* override this */ },

    /**
     * Code that executes immediately before the onDragOver event
     * @method b4DragOver
     * @private
     */
    b4DragOver: function(e) { },

    /**
     * Abstract method called when this element is hovering over another 
     * DragDrop obj
     * @method onDragOver
     * @param {Event} e the mousemove event
     * @param {String|DragDrop[]} id In POINT mode, the element
     * id this is hovering over.  In INTERSECT mode, an array of dd items 
     * being hovered over.
     */
    onDragOver: function(e, id) { /* override this */ },

    /**
     * Code that executes immediately before the onDragOut event
     * @method b4DragOut
     * @private
     */
    b4DragOut: function(e) { },

    /**
     * Abstract method called when we are no longer hovering over an element
     * @method onDragOut
     * @param {Event} e the mousemove event
     * @param {String|DragDrop[]} id In POINT mode, the element
     * id this was hovering over.  In INTERSECT mode, an array of dd items 
     * that the mouse is no longer over.
     */
    onDragOut: function(e, id) { /* override this */ },

    /**
     * Code that executes immediately before the onDragDrop event
     * @method b4DragDrop
     * @private
     */
    b4DragDrop: function(e) { },

    /**
     * Abstract method called when this item is dropped on another DragDrop 
     * obj
     * @method onDragDrop
     * @param {Event} e the mouseup event
     * @param {String|DragDrop[]} id In POINT mode, the element
     * id this was dropped on.  In INTERSECT mode, an array of dd items this 
     * was dropped on.
     */
    onDragDrop: function(e, id) { /* override this */ },

    /**
     * Abstract method called when this item is dropped on an area with no
     * drop target
     * @method onInvalidDrop
     * @param {Event} e the mouseup event
     */
    onInvalidDrop: function(e) { /* override this */ },

    /**
     * Code that executes immediately before the endDrag event
     * @method b4EndDrag
     * @private
     */
    b4EndDrag: function(e) { },

    /**
     * Fired when we are done dragging the object
     * @method endDrag
     * @param {Event} e the mouseup event
     */
    endDrag: function(e) { /* override this */ },

    /**
     * Code executed immediately before the onMouseDown event
     * @method b4MouseDown
     * @param {Event} e the mousedown event
     * @private
     */
    b4MouseDown: function(e) {  },

    /**
     * Event handler that fires when a drag/drop obj gets a mousedown
     * @method onMouseDown
     * @param {Event} e the mousedown event
     */
    onMouseDown: function(e) { /* override this */ },

    /**
     * Event handler that fires when a drag/drop obj gets a mouseup
     * @method onMouseUp
     * @param {Event} e the mouseup event
     */
    onMouseUp: function(e) { /* override this */ },
   
    /**
     * Override the onAvailable method to do what is needed after the initial
     * position was determined.
     * @method onAvailable
     */
    onAvailable: function () { 
        //this.logger.log(&quot;onAvailable (base)&quot;); 
    },

    /**
     * Returns a reference to the linked element
     * @method getEl
     * @return {HTMLElement} the html element 
     */
    getEl: function() { 
        if (!this._domRef) {
            this._domRef = Dom.get(this.id); 
        }

        return this._domRef;
    },

    /**
     * Returns a reference to the actual element to drag.  By default this is
     * the same as the html element, but it can be assigned to another 
     * element. An example of this can be found in YAHOO.util.DDProxy
     * @method getDragEl
     * @return {HTMLElement} the html element 
     */
    getDragEl: function() {
        return Dom.get(this.dragElId);
    },

    /**
     * Sets up the DragDrop object.  Must be called in the constructor of any
     * YAHOO.util.DragDrop subclass
     * @method init
     * @param id the id of the linked element
     * @param {String} sGroup the group of related items
     * @param {object} config configuration attributes
     */
    init: function(id, sGroup, config) {
        this.initTarget(id, sGroup, config);
        Event.on(this._domRef || this.id, &quot;mousedown&quot;, 
                        this.handleMouseDown, this, true);

        // Event.on(this.id, &quot;selectstart&quot;, Event.preventDefault);
        for (var i in this.events) {
            this.createEvent(i + 'Event');
        }
        
    },

    /**
     * Initializes Targeting functionality only... the object does not
     * get a mousedown handler.
     * @method initTarget
     * @param id the id of the linked element
     * @param {String} sGroup the group of related items
     * @param {object} config configuration attributes
     */
    initTarget: function(id, sGroup, config) {

        // configuration attributes 
        this.config = config || {};

        this.events = {};

        // create a local reference to the drag and drop manager
        this.DDM = YAHOO.util.DDM;

        // initialize the groups object
        this.groups = {};

        // assume that we have an element reference instead of an id if the
        // parameter is not a string
        if (typeof id !== &quot;string&quot;) {
            YAHOO.log(&quot;id is not a string, assuming it is an HTMLElement&quot;);
            this._domRef = id;
            id = Dom.generateId(id);
        }

        // set the id
        this.id = id;

        // add to an interaction group
        this.addToGroup((sGroup) ? sGroup : &quot;default&quot;);

        // We don't want to register this as the handle with the manager
        // so we just set the id rather than calling the setter.
        this.handleElId = id;

        Event.onAvailable(id, this.handleOnAvailable, this, true);

        // create a logger instance
        this.logger = (YAHOO.widget.LogWriter) ? 
                new YAHOO.widget.LogWriter(this.toString()) : YAHOO;

        // the linked element is the element that gets dragged by default
        this.setDragElId(id); 

        // by default, clicked anchors will not start drag operations. 
        // @TODO what else should be here?  Probably form fields.
        this.invalidHandleTypes = { A: &quot;A&quot; };
        this.invalidHandleIds = {};
        this.invalidHandleClasses = [];

        this.applyConfig();
    },

    /**
     * Applies the configuration parameters that were passed into the constructor.
     * This is supposed to happen at each level through the inheritance chain.  So
     * a DDProxy implentation will execute apply config on DDProxy, DD, and 
     * DragDrop in order to get all of the parameters that are available in
     * each object.
     * @method applyConfig
     */
    applyConfig: function() {
        this.events = {
            mouseDown: true,
            b4MouseDown: true,
            mouseUp: true,
            b4StartDrag: true,
            startDrag: true,
            b4EndDrag: true,
            endDrag: true,
            drag: true,
            b4Drag: true,
            invalidDrop: true,
            b4DragOut: true,
            dragOut: true,
            dragEnter: true,
            b4DragOver: true,
            dragOver: true,
            b4DragDrop: true,
            dragDrop: true
        };
        
        if (this.config.events) {
            for (var i in this.config.events) {
                if (this.config.events[i] === false) {
                    this.events[i] = false;
                }
            }
        }


        // configurable properties: 
        //    padding, isTarget, maintainOffset, primaryButtonOnly
        this.padding           = this.config.padding || [0, 0, 0, 0];
        this.isTarget          = (this.config.isTarget !== false);
        this.maintainOffset    = (this.config.maintainOffset);
        this.primaryButtonOnly = (this.config.primaryButtonOnly !== false);
        this.dragOnly = ((this.config.dragOnly === true) ? true : false);
        this.useShim = ((this.config.useShim === true) ? true : false);
    },

    /**
     * Executed when the linked element is available
     * @method handleOnAvailable
     * @private
     */
    handleOnAvailable: function() {
        //this.logger.log(&quot;handleOnAvailable&quot;);
        this.available = true;
        this.resetConstraints();
        this.onAvailable();
    },

     /**
     * Configures the padding for the target zone in px.  Effectively expands
     * (or reduces) the virtual object size for targeting calculations.  
     * Supports css-style shorthand; if only one parameter is passed, all sides
     * will have that padding, and if only two are passed, the top and bottom
     * will have the first param, the left and right the second.
     * @method setPadding
     * @param {int} iTop    Top pad
     * @param {int} iRight  Right pad
     * @param {int} iBot    Bot pad
     * @param {int} iLeft   Left pad
     */
    setPadding: function(iTop, iRight, iBot, iLeft) {
        // this.padding = [iLeft, iRight, iTop, iBot];
        if (!iRight &amp;&amp; 0 !== iRight) {
            this.padding = [iTop, iTop, iTop, iTop];
        } else if (!iBot &amp;&amp; 0 !== iBot) {
            this.padding = [iTop, iRight, iTop, iRight];
        } else {
            this.padding = [iTop, iRight, iBot, iLeft];
        }
    },

    /**
     * Stores the initial placement of the linked element.
     * @method setInitialPosition
     * @param {int} diffX   the X offset, default 0
     * @param {int} diffY   the Y offset, default 0
     * @private
     */
    setInitPosition: function(diffX, diffY) {
        var el = this.getEl();

        if (!this.DDM.verifyEl(el)) {
            if (el &amp;&amp; el.style &amp;&amp; (el.style.display == 'none')) {
                this.logger.log(this.id + &quot; can not get initial position, element style is display: none&quot;);
            } else {
                this.logger.log(this.id + &quot; element is broken&quot;);
            }
            return;
        }

        var dx = diffX || 0;
        var dy = diffY || 0;

        var p = Dom.getXY( el );

        this.initPageX = p[0] - dx;
        this.initPageY = p[1] - dy;

        this.lastPageX = p[0];
        this.lastPageY = p[1];

        this.logger.log(this.id + &quot; initial position: &quot; + this.initPageX + 
                &quot;, &quot; + this.initPageY);


        this.setStartPosition(p);
    },

    /**
     * Sets the start position of the element.  This is set when the obj
     * is initialized, the reset when a drag is started.
     * @method setStartPosition
     * @param pos current position (from previous lookup)
     * @private
     */
    setStartPosition: function(pos) {
        var p = pos || Dom.getXY(this.getEl());

        this.deltaSetXY = null;

        this.startPageX = p[0];
        this.startPageY = p[1];
    },

    /**
     * Add this instance to a group of related drag/drop objects.  All 
     * instances belong to at least one group, and can belong to as many 
     * groups as needed.
     * @method addToGroup
     * @param sGroup {string} the name of the group
     */
    addToGroup: function(sGroup) {
        this.groups[sGroup] = true;
        this.DDM.regDragDrop(this, sGroup);
    },

    /**
     * Remove's this instance from the supplied interaction group
     * @method removeFromGroup
     * @param {string}  sGroup  The group to drop
     */
    removeFromGroup: function(sGroup) {
        this.logger.log(&quot;Removing from group: &quot; + sGroup);
        if (this.groups[sGroup]) {
            delete this.groups[sGroup];
        }

        this.DDM.removeDDFromGroup(this, sGroup);
    },

    /**
     * Allows you to specify that an element other than the linked element 
     * will be moved with the cursor during a drag
     * @method setDragElId
     * @param id {string} the id of the element that will be used to initiate the drag
     */
    setDragElId: function(id) {
        this.dragElId = id;
    },

    /**
     * Allows you to specify a child of the linked element that should be 
     * used to initiate the drag operation.  An example of this would be if 
     * you have a content div with text and links.  Clicking anywhere in the 
     * content area would normally start the drag operation.  Use this method
     * to specify that an element inside of the content div is the element 
     * that starts the drag operation.
     * @method setHandleElId
     * @param id {string} the id of the element that will be used to 
     * initiate the drag.
     */
    setHandleElId: function(id) {
        if (typeof id !== &quot;string&quot;) {
            YAHOO.log(&quot;id is not a string, assuming it is an HTMLElement&quot;);
            id = Dom.generateId(id);
        }
        this.handleElId = id;
        this.DDM.regHandle(this.id, id);
    },

    /**
     * Allows you to set an element outside of the linked element as a drag 
     * handle
     * @method setOuterHandleElId
     * @param id the id of the element that will be used to initiate the drag
     */
    setOuterHandleElId: function(id) {
        if (typeof id !== &quot;string&quot;) {
            YAHOO.log(&quot;id is not a string, assuming it is an HTMLElement&quot;);
            id = Dom.generateId(id);
        }
        this.logger.log(&quot;Adding outer handle event: &quot; + id);
        Event.on(id, &quot;mousedown&quot;, 
                this.handleMouseDown, this, true);
        this.setHandleElId(id);

        this.hasOuterHandles = true;
    },

    /**
     * Remove all drag and drop hooks for this element
     * @method unreg
     */
    unreg: function() {
        this.logger.log(&quot;DragDrop obj cleanup &quot; + this.id);
        Event.removeListener(this.id, &quot;mousedown&quot;, 
                this.handleMouseDown);
        this._domRef = null;
        this.DDM._remove(this);
    },

    /**
     * Returns true if this instance is locked, or the drag drop mgr is locked
     * (meaning that all drag/drop is disabled on the page.)
     * @method isLocked
     * @return {boolean} true if this obj or all drag/drop is locked, else 
     * false
     */
    isLocked: function() {
        return (this.DDM.isLocked() || this.locked);
    },

    /**
     * Fired when this object is clicked
     * @method handleMouseDown
     * @param {Event} e 
     * @param {YAHOO.util.DragDrop} oDD the clicked dd object (this dd obj)
     * @private
     */
    handleMouseDown: function(e, oDD) {

        var button = e.which || e.button;
        this.logger.log(&quot;button: &quot; + button);

        if (this.primaryButtonOnly &amp;&amp; button &gt; 1) {
            this.logger.log(&quot;Mousedown was not produced by the primary button&quot;);
            return;
        }

        if (this.isLocked()) {
            this.logger.log(&quot;Drag and drop is disabled, aborting&quot;);
            return;
        }

        this.logger.log(&quot;mousedown &quot; + this.id);

        this.logger.log(&quot;firing onMouseDown events&quot;);

        // firing the mousedown events prior to calculating positions
        var b4Return = this.b4MouseDown(e),
        b4Return2 = true;

        if (this.events.b4MouseDown) {
            b4Return2 = this.fireEvent('b4MouseDownEvent', e);
        }
        var mDownReturn = this.onMouseDown(e),
            mDownReturn2 = true;
        if (this.events.mouseDown) {
            if (mDownReturn === false) {
                //Fixes #2528759 - Mousedown function returned false, don't fire the event and cancel everything.
                 mDownReturn2 = false;
            } else {
                mDownReturn2 = this.fireEvent('mouseDownEvent', e);
            }
        }

        if ((b4Return === false) || (mDownReturn === false) || (b4Return2 === false) || (mDownReturn2 === false)) {
            this.logger.log('b4MouseDown or onMouseDown returned false, exiting drag');
            return;
        }

        this.DDM.refreshCache(this.groups);
        // var self = this;
        // setTimeout( function() { self.DDM.refreshCache(self.groups); }, 0);

        // Only process the event if we really clicked within the linked 
        // element.  The reason we make this check is that in the case that 
        // another element was moved between the clicked element and the 
        // cursor in the time between the mousedown and mouseup events. When 
        // this happens, the element gets the next mousedown event 
        // regardless of where on the screen it happened.  
        var pt = new YAHOO.util.Point(Event.getPageX(e), Event.getPageY(e));
        if (!this.hasOuterHandles &amp;&amp; !this.DDM.isOverTarget(pt, this) )  {
                this.logger.log(&quot;Click was not over the element: &quot; + this.id);
        } else {
            if (this.clickValidator(e)) {

                this.logger.log(&quot;click was a valid handle&quot;);

                // set the initial element position
                this.setStartPosition();

                // start tracking mousemove distance and mousedown time to
                // determine when to start the actual drag
                this.DDM.handleMouseDown(e, this);

                // this mousedown is mine
                this.DDM.stopEvent(e);
            } else {

this.logger.log(&quot;clickValidator returned false, drag not initiated&quot;);

            }
        }
    },

    /**
     * @method clickValidator
     * @description Method validates that the clicked element
     * was indeed the handle or a valid child of the handle
     * @param {Event} e 
     */
    clickValidator: function(e) {
        var target = YAHOO.util.Event.getTarget(e);
        return ( this.isValidHandleChild(target) &amp;&amp;
                    (this.id == this.handleElId || 
                        this.DDM.handleWasClicked(target, this.id)) );
    },

    /**
     * Finds the location the element should be placed if we want to move
     * it to where the mouse location less the click offset would place us.
     * @method getTargetCoord
     * @param {int} iPageX the X coordinate of the click
     * @param {int} iPageY the Y coordinate of the click
     * @return an object that contains the coordinates (Object.x and Object.y)
     * @private
     */
    getTargetCoord: function(iPageX, iPageY) {

        // this.logger.log(&quot;getTargetCoord: &quot; + iPageX + &quot;, &quot; + iPageY);

        var x = iPageX - this.deltaX;
        var y = iPageY - this.deltaY;

        if (this.constrainX) {
            if (x &lt; this.minX) { x = this.minX; }
            if (x &gt; this.maxX) { x = this.maxX; }
        }

        if (this.constrainY) {
            if (y &lt; this.minY) { y = this.minY; }
            if (y &gt; this.maxY) { y = this.maxY; }
        }

        x = this.getTick(x, this.xTicks);
        y = this.getTick(y, this.yTicks);

        // this.logger.log(&quot;getTargetCoord &quot; + 
                // &quot; iPageX: &quot; + iPageX +
                // &quot; iPageY: &quot; + iPageY +
                // &quot; x: &quot; + x + &quot;, y: &quot; + y);

        return {x:x, y:y};
    },

    /**
     * Allows you to specify a tag name that should not start a drag operation
     * when clicked.  This is designed to facilitate embedding links within a
     * drag handle that do something other than start the drag.
     * @method addInvalidHandleType
     * @param {string} tagName the type of element to exclude
     */
    addInvalidHandleType: function(tagName) {
        var type = tagName.toUpperCase();
        this.invalidHandleTypes[type] = type;
    },

    /**
     * Lets you to specify an element id for a child of a drag handle
     * that should not initiate a drag
     * @method addInvalidHandleId
     * @param {string} id the element id of the element you wish to ignore
     */
    addInvalidHandleId: function(id) {
        if (typeof id !== &quot;string&quot;) {
            YAHOO.log(&quot;id is not a string, assuming it is an HTMLElement&quot;);
            id = Dom.generateId(id);
        }
        this.invalidHandleIds[id] = id;
    },


    /**
     * Lets you specify a css class of elements that will not initiate a drag
     * @method addInvalidHandleClass
     * @param {string} cssClass the class of the elements you wish to ignore
     */
    addInvalidHandleClass: function(cssClass) {
        this.invalidHandleClasses.push(cssClass);
    },

    /**
     * Unsets an excluded tag name set by addInvalidHandleType
     * @method removeInvalidHandleType
     * @param {string} tagName the type of element to unexclude
     */
    removeInvalidHandleType: function(tagName) {
        var type = tagName.toUpperCase();
        // this.invalidHandleTypes[type] = null;
        delete this.invalidHandleTypes[type];
    },
    
    /**
     * Unsets an invalid handle id
     * @method removeInvalidHandleId
     * @param {string} id the id of the element to re-enable
     */
    removeInvalidHandleId: function(id) {
        if (typeof id !== &quot;string&quot;) {
            YAHOO.log(&quot;id is not a string, assuming it is an HTMLElement&quot;);
            id = Dom.generateId(id);
        }
        delete this.invalidHandleIds[id];
    },

    /**
     * Unsets an invalid css class
     * @method removeInvalidHandleClass
     * @param {string} cssClass the class of the element(s) you wish to 
     * re-enable
     */
    removeInvalidHandleClass: function(cssClass) {
        for (var i=0, len=this.invalidHandleClasses.length; i&lt;len; ++i) {
            if (this.invalidHandleClasses[i] == cssClass) {
                delete this.invalidHandleClasses[i];
            }
        }
    },

    /**
     * Checks the tag exclusion list to see if this click should be ignored
     * @method isValidHandleChild
     * @param {HTMLElement} node the HTMLElement to evaluate
     * @return {boolean} true if this is a valid tag type, false if not
     */
    isValidHandleChild: function(node) {

        var valid = true;
        // var n = (node.nodeName == &quot;#text&quot;) ? node.parentNode : node;
        var nodeName;
        try {
            nodeName = node.nodeName.toUpperCase();
        } catch(e) {
            nodeName = node.nodeName;
        }
        valid = valid &amp;&amp; !this.invalidHandleTypes[nodeName];
        valid = valid &amp;&amp; !this.invalidHandleIds[node.id];

        for (var i=0, len=this.invalidHandleClasses.length; valid &amp;&amp; i&lt;len; ++i) {
            valid = !Dom.hasClass(node, this.invalidHandleClasses[i]);
        }

        this.logger.log(&quot;Valid handle? ... &quot; + valid);

        return valid;

    },

    /**
     * Create the array of horizontal tick marks if an interval was specified
     * in setXConstraint().
     * @method setXTicks
     * @private
     */
    setXTicks: function(iStartX, iTickSize) {
        this.xTicks = [];
        this.xTickSize = iTickSize;
        
        var tickMap = {};

        for (var i = this.initPageX; i &gt;= this.minX; i = i - iTickSize) {
            if (!tickMap[i]) {
                this.xTicks[this.xTicks.length] = i;
                tickMap[i] = true;
            }
        }

        for (i = this.initPageX; i &lt;= this.maxX; i = i + iTickSize) {
            if (!tickMap[i]) {
                this.xTicks[this.xTicks.length] = i;
                tickMap[i] = true;
            }
        }

        this.xTicks.sort(this.DDM.numericSort) ;
        this.logger.log(&quot;xTicks: &quot; + this.xTicks.join());
    },

    /**
     * Create the array of vertical tick marks if an interval was specified in 
     * setYConstraint().
     * @method setYTicks
     * @private
     */
    setYTicks: function(iStartY, iTickSize) {
        // this.logger.log(&quot;setYTicks: &quot; + iStartY + &quot;, &quot; + iTickSize
               // + &quot;, &quot; + this.initPageY + &quot;, &quot; + this.minY + &quot;, &quot; + this.maxY );
        this.yTicks = [];
        this.yTickSize = iTickSize;

        var tickMap = {};

        for (var i = this.initPageY; i &gt;= this.minY; i = i - iTickSize) {
            if (!tickMap[i]) {
                this.yTicks[this.yTicks.length] = i;
                tickMap[i] = true;
            }
        }

        for (i = this.initPageY; i &lt;= this.maxY; i = i + iTickSize) {
            if (!tickMap[i]) {
                this.yTicks[this.yTicks.length] = i;
                tickMap[i] = true;
            }
        }

        this.yTicks.sort(this.DDM.numericSort) ;
        this.logger.log(&quot;yTicks: &quot; + this.yTicks.join());
    },

    /**
     * By default, the element can be dragged any place on the screen.  Use 
     * this method to limit the horizontal travel of the element.  Pass in 
     * 0,0 for the parameters if you want to lock the drag to the y axis.
     * @method setXConstraint
     * @param {int} iLeft the number of pixels the element can move to the left
     * @param {int} iRight the number of pixels the element can move to the 
     * right
     * @param {int} iTickSize optional parameter for specifying that the 
     * element
     * should move iTickSize pixels at a time.
     */
    setXConstraint: function(iLeft, iRight, iTickSize) {
        this.leftConstraint = parseInt(iLeft, 10);
        this.rightConstraint = parseInt(iRight, 10);

        this.minX = this.initPageX - this.leftConstraint;
        this.maxX = this.initPageX + this.rightConstraint;
        if (iTickSize) { this.setXTicks(this.initPageX, iTickSize); }

        this.constrainX = true;
        this.logger.log(&quot;initPageX:&quot; + this.initPageX + &quot; minX:&quot; + this.minX + 
                &quot; maxX:&quot; + this.maxX);
    },

    /**
     * Clears any constraints applied to this instance.  Also clears ticks
     * since they can't exist independent of a constraint at this time.
     * @method clearConstraints
     */
    clearConstraints: function() {
        this.logger.log(&quot;Clearing constraints&quot;);
        this.constrainX = false;
        this.constrainY = false;
        this.clearTicks();
    },

    /**
     * Clears any tick interval defined for this instance
     * @method clearTicks
     */
    clearTicks: function() {
        this.logger.log(&quot;Clearing ticks&quot;);
        this.xTicks = null;
        this.yTicks = null;
        this.xTickSize = 0;
        this.yTickSize = 0;
    },

    /**
     * By default, the element can be dragged any place on the screen.  Set 
     * this to limit the vertical travel of the element.  Pass in 0,0 for the
     * parameters if you want to lock the drag to the x axis.
     * @method setYConstraint
     * @param {int} iUp the number of pixels the element can move up
     * @param {int} iDown the number of pixels the element can move down
     * @param {int} iTickSize optional parameter for specifying that the 
     * element should move iTickSize pixels at a time.
     */
    setYConstraint: function(iUp, iDown, iTickSize) {
        this.logger.log(&quot;setYConstraint: &quot; + iUp + &quot;,&quot; + iDown + &quot;,&quot; + iTickSize);
        this.topConstraint = parseInt(iUp, 10);
        this.bottomConstraint = parseInt(iDown, 10);

        this.minY = this.initPageY - this.topConstraint;
        this.maxY = this.initPageY + this.bottomConstraint;
        if (iTickSize) { this.setYTicks(this.initPageY, iTickSize); }

        this.constrainY = true;
        
        this.logger.log(&quot;initPageY:&quot; + this.initPageY + &quot; minY:&quot; + this.minY + 
                &quot; maxY:&quot; + this.maxY);
    },

    /**
     * resetConstraints must be called if you manually reposition a dd element.
     * @method resetConstraints
     */
    resetConstraints: function() {

        //this.logger.log(&quot;resetConstraints&quot;);

        // Maintain offsets if necessary
        if (this.initPageX || this.initPageX === 0) {
            //this.logger.log(&quot;init pagexy: &quot; + this.initPageX + &quot;, &quot; + 
                               //this.initPageY);
            //this.logger.log(&quot;last pagexy: &quot; + this.lastPageX + &quot;, &quot; + 
                               //this.lastPageY);
            // figure out how much this thing has moved
            var dx = (this.maintainOffset) ? this.lastPageX - this.initPageX : 0;
            var dy = (this.maintainOffset) ? this.lastPageY - this.initPageY : 0;

            this.setInitPosition(dx, dy);

        // This is the first time we have detected the element's position
        } else {
            this.setInitPosition();
        }

        if (this.constrainX) {
            this.setXConstraint( this.leftConstraint, 
                                 this.rightConstraint, 
                                 this.xTickSize        );
        }

        if (this.constrainY) {
            this.setYConstraint( this.topConstraint, 
                                 this.bottomConstraint, 
                                 this.yTickSize         );
        }
    },

    /**
     * Normally the drag element is moved pixel by pixel, but we can specify 
     * that it move a number of pixels at a time.  This method resolves the 
     * location when we have it set up like this.
     * @method getTick
     * @param {int} val where we want to place the object
     * @param {int[]} tickArray sorted array of valid points
     * @return {int} the closest tick
     * @private
     */
    getTick: function(val, tickArray) {

        if (!tickArray) {
            // If tick interval is not defined, it is effectively 1 pixel, 
            // so we return the value passed to us.
            return val; 
        } else if (tickArray[0] &gt;= val) {
            // The value is lower than the first tick, so we return the first
            // tick.
            return tickArray[0];
        } else {
            for (var i=0, len=tickArray.length; i&lt;len; ++i) {
                var next = i + 1;
                if (tickArray[next] &amp;&amp; tickArray[next] &gt;= val) {
                    var diff1 = val - tickArray[i];
                    var diff2 = tickArray[next] - val;
                    return (diff2 &gt; diff1) ? tickArray[i] : tickArray[next];
                }
            }

            // The value is larger than the last tick, so we return the last
            // tick.
            return tickArray[tickArray.length - 1];
        }
    },

    /**
     * toString method
     * @method toString
     * @return {string} string representation of the dd obj
     */
    toString: function() {
        return (&quot;DragDrop &quot; + this.id);
    }

};
YAHOO.augment(YAHOO.util.DragDrop, YAHOO.util.EventProvider);

/**
* @event mouseDownEvent
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4MouseDownEvent
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event mouseUpEvent
* @description Fired from inside DragDropMgr when the drag operation is finished.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4StartDragEvent
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event startDragEvent
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4EndDragEvent
* @description Fires before the endDragEvent. Returning false will cancel.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event endDragEvent
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event dragEvent
* @description Occurs every mousemove event while dragging.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragEvent
* @description Fires before the dragEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event invalidDropEvent
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOutEvent
* @description Fires before the dragOutEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOutEvent
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragEnterEvent
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOverEvent
* @description Fires before the dragOverEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOverEvent
* @description Fires every mousemove event while over a drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragDropEvent 
* @description Fires before the dragDropEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragDropEvent
* @description Fires when the dragged objects is dropped on another.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
})();
/**
 * A DragDrop implementation where the linked element follows the 
 * mouse cursor during a drag.
 * @class DD
 * @extends YAHOO.util.DragDrop
 * @constructor
 * @param {String} id the id of the linked element 
 * @param {String} sGroup the group of related DragDrop items
 * @param {object} config an object containing configurable attributes
 *                Valid properties for DD: 
 *                    scroll
 */
YAHOO.util.DD = function(id, sGroup, config) {
    if (id) {
        this.init(id, sGroup, config);
    }
};

YAHOO.extend(YAHOO.util.DD, YAHOO.util.DragDrop, {

    /**
     * When set to true, the utility automatically tries to scroll the browser
     * window when a drag and drop element is dragged near the viewport boundary.
     * Defaults to true.
     * @property scroll
     * @type boolean
     */
    scroll: true, 

    /**
     * Sets the pointer offset to the distance between the linked element's top 
     * left corner and the location the element was clicked
     * @method autoOffset
     * @param {int} iPageX the X coordinate of the click
     * @param {int} iPageY the Y coordinate of the click
     */
    autoOffset: function(iPageX, iPageY) {
        var x = iPageX - this.startPageX;
        var y = iPageY - this.startPageY;
        this.setDelta(x, y);
        // this.logger.log(&quot;autoOffset el pos: &quot; + aCoord + &quot;, delta: &quot; + x + &quot;,&quot; + y);
    },

    /** 
     * Sets the pointer offset.  You can call this directly to force the 
     * offset to be in a particular location (e.g., pass in 0,0 to set it 
     * to the center of the object, as done in YAHOO.widget.Slider)
     * @method setDelta
     * @param {int} iDeltaX the distance from the left
     * @param {int} iDeltaY the distance from the top
     */
    setDelta: function(iDeltaX, iDeltaY) {
        this.deltaX = iDeltaX;
        this.deltaY = iDeltaY;
        this.logger.log(&quot;deltaX:&quot; + this.deltaX + &quot;, deltaY:&quot; + this.deltaY);
    },

    /**
     * Sets the drag element to the location of the mousedown or click event, 
     * maintaining the cursor location relative to the location on the element 
     * that was clicked.  Override this if you want to place the element in a 
     * location other than where the cursor is.
     * @method setDragElPos
     * @param {int} iPageX the X coordinate of the mousedown or drag event
     * @param {int} iPageY the Y coordinate of the mousedown or drag event
     */
    setDragElPos: function(iPageX, iPageY) {
        // the first time we do this, we are going to check to make sure
        // the element has css positioning

        var el = this.getDragEl();
        this.alignElWithMouse(el, iPageX, iPageY);
    },

    /**
     * Sets the element to the location of the mousedown or click event, 
     * maintaining the cursor location relative to the location on the element 
     * that was clicked.  Override this if you want to place the element in a 
     * location other than where the cursor is.
     * @method alignElWithMouse
     * @param {HTMLElement} el the element to move
     * @param {int} iPageX the X coordinate of the mousedown or drag event
     * @param {int} iPageY the Y coordinate of the mousedown or drag event
     */
    alignElWithMouse: function(el, iPageX, iPageY) {
        var oCoord = this.getTargetCoord(iPageX, iPageY);
        // this.logger.log(&quot;****alignElWithMouse : &quot; + el.id + &quot;, &quot; + aCoord + &quot;, &quot; + el.style.display);

        if (!this.deltaSetXY) {
            var aCoord = [oCoord.x, oCoord.y];
            YAHOO.util.Dom.setXY(el, aCoord);

            var newLeft = parseInt( YAHOO.util.Dom.getStyle(el, &quot;left&quot;), 10 );
            var newTop  = parseInt( YAHOO.util.Dom.getStyle(el, &quot;top&quot; ), 10 );

            this.deltaSetXY = [ newLeft - oCoord.x, newTop - oCoord.y ];
        } else {
            YAHOO.util.Dom.setStyle(el, &quot;left&quot;, (oCoord.x + this.deltaSetXY[0]) + &quot;px&quot;);
            YAHOO.util.Dom.setStyle(el, &quot;top&quot;,  (oCoord.y + this.deltaSetXY[1]) + &quot;px&quot;);
        }
        
        this.cachePosition(oCoord.x, oCoord.y);
        var self = this;
        setTimeout(function() {
            self.autoScroll.call(self, oCoord.x, oCoord.y, el.offsetHeight, el.offsetWidth);
        }, 0);
    },

    /**
     * Saves the most recent position so that we can reset the constraints and
     * tick marks on-demand.  We need to know this so that we can calculate the
     * number of pixels the element is offset from its original position.
     * @method cachePosition
     * @param iPageX the current x position (optional, this just makes it so we
     * don't have to look it up again)
     * @param iPageY the current y position (optional, this just makes it so we
     * don't have to look it up again)
     */
    cachePosition: function(iPageX, iPageY) {
        if (iPageX) {
            this.lastPageX = iPageX;
            this.lastPageY = iPageY;
        } else {
            var aCoord = YAHOO.util.Dom.getXY(this.getEl());
            this.lastPageX = aCoord[0];
            this.lastPageY = aCoord[1];
        }
    },

    /**
     * Auto-scroll the window if the dragged object has been moved beyond the 
     * visible window boundary.
     * @method autoScroll
     * @param {int} x the drag element's x position
     * @param {int} y the drag element's y position
     * @param {int} h the height of the drag element
     * @param {int} w the width of the drag element
     * @private
     */
    autoScroll: function(x, y, h, w) {

        if (this.scroll) {
            // The client height
            var clientH = this.DDM.getClientHeight();

            // The client width
            var clientW = this.DDM.getClientWidth();

            // The amt scrolled down
            var st = this.DDM.getScrollTop();

            // The amt scrolled right
            var sl = this.DDM.getScrollLeft();

            // Location of the bottom of the element
            var bot = h + y;

            // Location of the right of the element
            var right = w + x;

            // The distance from the cursor to the bottom of the visible area, 
            // adjusted so that we don't scroll if the cursor is beyond the
            // element drag constraints
            var toBot = (clientH + st - y - this.deltaY);

            // The distance from the cursor to the right of the visible area
            var toRight = (clientW + sl - x - this.deltaX);

            // this.logger.log( &quot; x: &quot; + x + &quot; y: &quot; + y + &quot; h: &quot; + h + 
            // &quot; clientH: &quot; + clientH + &quot; clientW: &quot; + clientW + 
            // &quot; st: &quot; + st + &quot; sl: &quot; + sl + &quot; bot: &quot; + bot + 
            // &quot; right: &quot; + right + &quot; toBot: &quot; + toBot + &quot; toRight: &quot; + toRight);

            // How close to the edge the cursor must be before we scroll
            // var thresh = (document.all) ? 100 : 40;
            var thresh = 40;

            // How many pixels to scroll per autoscroll op.  This helps to reduce 
            // clunky scrolling. IE is more sensitive about this ... it needs this 
            // value to be higher.
            var scrAmt = (document.all) ? 80 : 30;

            // Scroll down if we are near the bottom of the visible page and the 
            // obj extends below the crease
            if ( bot &gt; clientH &amp;&amp; toBot &lt; thresh ) { 
                window.scrollTo(sl, st + scrAmt); 
            }

            // Scroll up if the window is scrolled down and the top of the object
            // goes above the top border
            if ( y &lt; st &amp;&amp; st &gt; 0 &amp;&amp; y - st &lt; thresh ) { 
                window.scrollTo(sl, st - scrAmt); 
            }

            // Scroll right if the obj is beyond the right border and the cursor is
            // near the border.
            if ( right &gt; clientW &amp;&amp; toRight &lt; thresh ) { 
                window.scrollTo(sl + scrAmt, st); 
            }

            // Scroll left if the window has been scrolled to the right and the obj
            // extends past the left border
            if ( x &lt; sl &amp;&amp; sl &gt; 0 &amp;&amp; x - sl &lt; thresh ) { 
                window.scrollTo(sl - scrAmt, st);
            }
        }
    },

    /*
     * Sets up config options specific to this class. Overrides
     * YAHOO.util.DragDrop, but all versions of this method through the 
     * inheritance chain are called
     */
    applyConfig: function() {
        YAHOO.util.DD.superclass.applyConfig.call(this);
        this.scroll = (this.config.scroll !== false);
    },

    /*
     * Event that fires prior to the onMouseDown event.  Overrides 
     * YAHOO.util.DragDrop.
     */
    b4MouseDown: function(e) {
        this.setStartPosition();
        // this.resetConstraints();
        this.autoOffset(YAHOO.util.Event.getPageX(e), 
                            YAHOO.util.Event.getPageY(e));
    },

    /*
     * Event that fires prior to the onDrag event.  Overrides 
     * YAHOO.util.DragDrop.
     */
    b4Drag: function(e) {
        this.setDragElPos(YAHOO.util.Event.getPageX(e), 
                            YAHOO.util.Event.getPageY(e));
    },

    toString: function() {
        return (&quot;DD &quot; + this.id);
    }

    //////////////////////////////////////////////////////////////////////////
    // Debugging ygDragDrop events that can be overridden
    //////////////////////////////////////////////////////////////////////////
    /*
    startDrag: function(x, y) {
        this.logger.log(this.id.toString()  + &quot; startDrag&quot;);
    },

    onDrag: function(e) {
        this.logger.log(this.id.toString() + &quot; onDrag&quot;);
    },

    onDragEnter: function(e, id) {
        this.logger.log(this.id.toString() + &quot; onDragEnter: &quot; + id);
    },

    onDragOver: function(e, id) {
        this.logger.log(this.id.toString() + &quot; onDragOver: &quot; + id);
    },

    onDragOut: function(e, id) {
        this.logger.log(this.id.toString() + &quot; onDragOut: &quot; + id);
    },

    onDragDrop: function(e, id) {
        this.logger.log(this.id.toString() + &quot; onDragDrop: &quot; + id);
    },

    endDrag: function(e) {
        this.logger.log(this.id.toString() + &quot; endDrag&quot;);
    }

    */

/**
* @event mouseDownEvent
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4MouseDownEvent
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event mouseUpEvent
* @description Fired from inside DragDropMgr when the drag operation is finished.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4StartDragEvent
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event startDragEvent
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4EndDragEvent
* @description Fires before the endDragEvent. Returning false will cancel.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event endDragEvent
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event dragEvent
* @description Occurs every mousemove event while dragging.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragEvent
* @description Fires before the dragEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event invalidDropEvent
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOutEvent
* @description Fires before the dragOutEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOutEvent
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragEnterEvent
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOverEvent
* @description Fires before the dragOverEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOverEvent
* @description Fires every mousemove event while over a drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragDropEvent 
* @description Fires before the dragDropEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragDropEvent
* @description Fires when the dragged objects is dropped on another.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
});
/**
 * A DragDrop implementation that inserts an empty, bordered div into
 * the document that follows the cursor during drag operations.  At the time of
 * the click, the frame div is resized to the dimensions of the linked html
 * element, and moved to the exact location of the linked element.
 *
 * References to the &quot;frame&quot; element refer to the single proxy element that
 * was created to be dragged in place of all DDProxy elements on the
 * page.
 *
 * @class DDProxy
 * @extends YAHOO.util.DD
 * @constructor
 * @param {String} id the id of the linked html element
 * @param {String} sGroup the group of related DragDrop objects
 * @param {object} config an object containing configurable attributes
 *                Valid properties for DDProxy in addition to those in DragDrop: 
 *                   resizeFrame, centerFrame, dragElId
 */
YAHOO.util.DDProxy = function(id, sGroup, config) {
    if (id) {
        this.init(id, sGroup, config);
        this.initFrame(); 
    }
};

/**
 * The default drag frame div id
 * @property YAHOO.util.DDProxy.dragElId
 * @type String
 * @static
 */
YAHOO.util.DDProxy.dragElId = &quot;ygddfdiv&quot;;

YAHOO.extend(YAHOO.util.DDProxy, YAHOO.util.DD, {

    /**
     * By default we resize the drag frame to be the same size as the element
     * we want to drag (this is to get the frame effect).  We can turn it off
     * if we want a different behavior.
     * @property resizeFrame
     * @type boolean
     */
    resizeFrame: true,

    /**
     * By default the frame is positioned exactly where the drag element is, so
     * we use the cursor offset provided by YAHOO.util.DD.  Another option that works only if
     * you do not have constraints on the obj is to have the drag frame centered
     * around the cursor.  Set centerFrame to true for this effect.
     * @property centerFrame
     * @type boolean
     */
    centerFrame: false,

    /**
     * Creates the proxy element if it does not yet exist
     * @method createFrame
     */
    createFrame: function() {
        var self=this, body=document.body;

        if (!body || !body.firstChild) {
            setTimeout( function() { self.createFrame(); }, 50 );
            return;
        }

        var div=this.getDragEl(), Dom=YAHOO.util.Dom;

        if (!div) {
            div    = document.createElement(&quot;div&quot;);
            div.id = this.dragElId;
            var s  = div.style;

            s.position   = &quot;absolute&quot;;
            s.visibility = &quot;hidden&quot;;
            s.cursor     = &quot;move&quot;;
            s.border     = &quot;2px solid #aaa&quot;;
            s.zIndex     = 999;
            s.height     = &quot;25px&quot;;
            s.width      = &quot;25px&quot;;

            var _data = document.createElement('div');
            Dom.setStyle(_data, 'height', '100%');
            Dom.setStyle(_data, 'width', '100%');
            /**
            * If the proxy element has no background-color, then it is considered to the &quot;transparent&quot; by Internet Explorer.
            * Since it is &quot;transparent&quot; then the events pass through it to the iframe below.
            * So creating a &quot;fake&quot; div inside the proxy element and giving it a background-color, then setting it to an
            * opacity of 0, it appears to not be there, however IE still thinks that it is so the events never pass through.
            */
            Dom.setStyle(_data, 'background-color', '#ccc');
            Dom.setStyle(_data, 'opacity', '0');
            div.appendChild(_data);

            // appendChild can blow up IE if invoked prior to the window load event
            // while rendering a table.  It is possible there are other scenarios 
            // that would cause this to happen as well.
            body.insertBefore(div, body.firstChild);
        }
    },

    /**
     * Initialization for the drag frame element.  Must be called in the
     * constructor of all subclasses
     * @method initFrame
     */
    initFrame: function() {
        this.createFrame();
    },

    applyConfig: function() {
        //this.logger.log(&quot;DDProxy applyConfig&quot;);
        YAHOO.util.DDProxy.superclass.applyConfig.call(this);

        this.resizeFrame = (this.config.resizeFrame !== false);
        this.centerFrame = (this.config.centerFrame);
        this.setDragElId(this.config.dragElId || YAHOO.util.DDProxy.dragElId);
    },

    /**
     * Resizes the drag frame to the dimensions of the clicked object, positions 
     * it over the object, and finally displays it
     * @method showFrame
     * @param {int} iPageX X click position
     * @param {int} iPageY Y click position
     * @private
     */
    showFrame: function(iPageX, iPageY) {
        var el = this.getEl();
        var dragEl = this.getDragEl();
        var s = dragEl.style;

        this._resizeProxy();

        if (this.centerFrame) {
            this.setDelta( Math.round(parseInt(s.width,  10)/2), 
                           Math.round(parseInt(s.height, 10)/2) );
        }

        this.setDragElPos(iPageX, iPageY);

        YAHOO.util.Dom.setStyle(dragEl, &quot;visibility&quot;, &quot;visible&quot;); 
    },

    /**
     * The proxy is automatically resized to the dimensions of the linked
     * element when a drag is initiated, unless resizeFrame is set to false
     * @method _resizeProxy
     * @private
     */
    _resizeProxy: function() {
        if (this.resizeFrame) {
            var DOM    = YAHOO.util.Dom;
            var el     = this.getEl();
            var dragEl = this.getDragEl();

            var bt = parseInt( DOM.getStyle(dragEl, &quot;borderTopWidth&quot;    ), 10);
            var br = parseInt( DOM.getStyle(dragEl, &quot;borderRightWidth&quot;  ), 10);
            var bb = parseInt( DOM.getStyle(dragEl, &quot;borderBottomWidth&quot; ), 10);
            var bl = parseInt( DOM.getStyle(dragEl, &quot;borderLeftWidth&quot;   ), 10);

            if (isNaN(bt)) { bt = 0; }
            if (isNaN(br)) { br = 0; }
            if (isNaN(bb)) { bb = 0; }
            if (isNaN(bl)) { bl = 0; }

            this.logger.log(&quot;proxy size: &quot; + bt + &quot;  &quot; + br + &quot; &quot; + bb + &quot; &quot; + bl);

            var newWidth  = Math.max(0, el.offsetWidth  - br - bl);                                                                                           
            var newHeight = Math.max(0, el.offsetHeight - bt - bb);

            this.logger.log(&quot;Resizing proxy element&quot;);

            DOM.setStyle( dragEl, &quot;width&quot;,  newWidth  + &quot;px&quot; );
            DOM.setStyle( dragEl, &quot;height&quot;, newHeight + &quot;px&quot; );
        }
    },

    // overrides YAHOO.util.DragDrop
    b4MouseDown: function(e) {
        this.setStartPosition();
        var x = YAHOO.util.Event.getPageX(e);
        var y = YAHOO.util.Event.getPageY(e);
        this.autoOffset(x, y);

        // This causes the autoscroll code to kick off, which means autoscroll can
        // happen prior to the check for a valid drag handle.
        // this.setDragElPos(x, y);
    },

    // overrides YAHOO.util.DragDrop
    b4StartDrag: function(x, y) {
        // show the drag frame
        this.logger.log(&quot;start drag show frame, x: &quot; + x + &quot;, y: &quot; + y);
        this.showFrame(x, y);
    },

    // overrides YAHOO.util.DragDrop
    b4EndDrag: function(e) {
        this.logger.log(this.id + &quot; b4EndDrag&quot;);
        YAHOO.util.Dom.setStyle(this.getDragEl(), &quot;visibility&quot;, &quot;hidden&quot;); 
    },

    // overrides YAHOO.util.DragDrop
    // By default we try to move the element to the last location of the frame.  
    // This is so that the default behavior mirrors that of YAHOO.util.DD.  
    endDrag: function(e) {
        var DOM = YAHOO.util.Dom;
        this.logger.log(this.id + &quot; endDrag&quot;);
        var lel = this.getEl();
        var del = this.getDragEl();

        // Show the drag frame briefly so we can get its position
        // del.style.visibility = &quot;&quot;;
        DOM.setStyle(del, &quot;visibility&quot;, &quot;&quot;); 

        // Hide the linked element before the move to get around a Safari 
        // rendering bug.
        //lel.style.visibility = &quot;hidden&quot;;
        DOM.setStyle(lel, &quot;visibility&quot;, &quot;hidden&quot;); 
        YAHOO.util.DDM.moveToEl(lel, del);
        //del.style.visibility = &quot;hidden&quot;;
        DOM.setStyle(del, &quot;visibility&quot;, &quot;hidden&quot;); 
        //lel.style.visibility = &quot;&quot;;
        DOM.setStyle(lel, &quot;visibility&quot;, &quot;&quot;); 
    },

    toString: function() {
        return (&quot;DDProxy &quot; + this.id);
    }
/**
* @event mouseDownEvent
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4MouseDownEvent
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event mouseUpEvent
* @description Fired from inside DragDropMgr when the drag operation is finished.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4StartDragEvent
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event startDragEvent
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event b4EndDragEvent
* @description Fires before the endDragEvent. Returning false will cancel.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event endDragEvent
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

/**
* @event dragEvent
* @description Occurs every mousemove event while dragging.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragEvent
* @description Fires before the dragEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event invalidDropEvent
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOutEvent
* @description Fires before the dragOutEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOutEvent
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire. 
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragEnterEvent
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragOverEvent
* @description Fires before the dragOverEvent.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragOverEvent
* @description Fires every mousemove event while over a drag and drop object.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event b4DragDropEvent 
* @description Fires before the dragDropEvent
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/
/**
* @event dragDropEvent
* @description Fires when the dragged objects is dropped on another.
* @type YAHOO.util.CustomEvent See &lt;a href=&quot;YAHOO.util.Element.html#addListener&quot;&gt;Element.addListener&lt;/a&gt; for more information on listening for this event.
*/

});
/**
 * A DragDrop implementation that does not move, but can be a drop 
 * target.  You would get the same result by simply omitting implementation 
 * for the event callbacks, but this way we reduce the processing cost of the 
 * event listener and the callbacks.
 * @class DDTarget
 * @extends YAHOO.util.DragDrop 
 * @constructor
 * @param {String} id the id of the element that is a drop target
 * @param {String} sGroup the group of related DragDrop objects
 * @param {object} config an object containing configurable attributes
 *                 Valid properties for DDTarget in addition to those in 
 *                 DragDrop: 
 *                    none
 */
YAHOO.util.DDTarget = function(id, sGroup, config) {
    if (id) {
        this.initTarget(id, sGroup, config);
    }
};

// YAHOO.util.DDTarget.prototype = new YAHOO.util.DragDrop();
YAHOO.extend(YAHOO.util.DDTarget, YAHOO.util.DragDrop, {
    toString: function() {
        return (&quot;DDTarget &quot; + this.id);
    }
});
YAHOO.register(&quot;dragdrop&quot;, YAHOO.util.DragDropMgr, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * Provides Attribute configurations.
 * @namespace YAHOO.util
 * @class Attribute
 * @constructor
 * @param hash {Object} The intial Attribute.
 * @param {YAHOO.util.AttributeProvider} The owner of the Attribute instance.
 */

YAHOO.util.Attribute = function(hash, owner) {
    if (owner) { 
        this.owner = owner;
        this.configure(hash, true);
    }
};

YAHOO.util.Attribute.INVALID_VALUE = {};

YAHOO.util.Attribute.prototype = {
    /**
     * The name of the attribute.
     * @property name
     * @type String
     */
    name: undefined,
    
    /**
     * The value of the attribute.
     * @property value
     * @type String
     */
    value: null,
    
    /**
     * The owner of the attribute.
     * @property owner
     * @type YAHOO.util.AttributeProvider
     */
    owner: null,
    
    /**
     * Whether or not the attribute is read only.
     * @property readOnly
     * @type Boolean
     */
    readOnly: false,
    
    /**
     * Whether or not the attribute can only be written once.
     * @property writeOnce
     * @type Boolean
     */
    writeOnce: false,

    /**
     * The attribute's initial configuration.
     * @private
     * @property _initialConfig
     * @type Object
     */
    _initialConfig: null,
    
    /**
     * Whether or not the attribute's value has been set.
     * @private
     * @property _written
     * @type Boolean
     */
    _written: false,
    
    /**
     * A function to call when setting the attribute's value.
     * The method receives the new value as the first arg and the attribute name as the 2nd
     * @property method
     * @type Function
     */
    method: null,
    
    /**
     * The function to use when setting the attribute's value.
     * The setter receives the new value as the first arg and the attribute name as the 2nd
     * The return value of the setter replaces the value passed to set(). 
     * @property setter
     * @type Function
     */
    setter: null,
    
    /**
     * The function to use when getting the attribute's value.
     * The getter receives the new value as the first arg and the attribute name as the 2nd
     * The return value of the getter will be used as the return from get().
     * @property getter
     * @type Function
     */
    getter: null,

    /**
     * The validator to use when setting the attribute's value.
     * @property validator
     * @type Function
     * @return Boolean
     */
    validator: null,
    
    /**
     * Retrieves the current value of the attribute.
     * @method getValue
     * @return {any} The current value of the attribute.
     */
    getValue: function() {
        var val = this.value;

        if (this.getter) {
            val = this.getter.call(this.owner, this.name, val);
        }

        return val;
    },
    
    /**
     * Sets the value of the attribute and fires beforeChange and change events.
     * @method setValue
     * @param {Any} value The value to apply to the attribute.
     * @param {Boolean} silent If true the change events will not be fired.
     * @return {Boolean} Whether or not the value was set.
     */
    setValue: function(value, silent) {
        var beforeRetVal,
            owner = this.owner,
            name = this.name,
            invalidValue = YAHOO.util.Attribute.INVALID_VALUE,
        
            event = {
                type: name, 
                prevValue: this.getValue(),
                newValue: value
        };
        
        if (this.readOnly || ( this.writeOnce &amp;&amp; this._written) ) {
            YAHOO.log( 'setValue ' + name + ', ' +  value +
                    ' failed: read only', 'error', 'Attribute');
            return false; // write not allowed
        }
        
        if (this.validator &amp;&amp; !this.validator.call(owner, value) ) {
            YAHOO.log( 'setValue ' + name + ', ' + value +
                    ' validation failed', 'error', 'Attribute');
            return false; // invalid value
        }

        if (!silent) {
            beforeRetVal = owner.fireBeforeChangeEvent(event);
            if (beforeRetVal === false) {
                YAHOO.log('setValue ' + name + 
                        ' cancelled by beforeChange event', 'info', 'Attribute');
                return false;
            }
        }

        if (this.setter) {
            value = this.setter.call(owner, value, this.name);
            if (value === undefined) {
                YAHOO.log('setter for ' + this.name + ' returned undefined', 'warn', 'Attribute');
            }

            if (value === invalidValue) {
                return false;
            }
        }
        
        if (this.method) {
            if (this.method.call(owner, value, this.name) === invalidValue) {
                return false; 
            }
        }
        
        this.value = value; // TODO: set before calling setter/method?
        this._written = true;
        
        event.type = name;
        
        if (!silent) {
            this.owner.fireChangeEvent(event);
        }
        
        return true;
    },
    
    /**
     * Allows for configuring the Attribute's properties.
     * @method configure
     * @param {Object} map A key-value map of Attribute properties.
     * @param {Boolean} init Whether or not this should become the initial config.
     */
    configure: function(map, init) {
        map = map || {};

        if (init) {
            this._written = false; // reset writeOnce
        }

        this._initialConfig = this._initialConfig || {};
        
        for (var key in map) {
            if ( map.hasOwnProperty(key) ) {
                this[key] = map[key];
                if (init) {
                    this._initialConfig[key] = map[key];
                }
            }
        }
    },
    
    /**
     * Resets the value to the initial config value.
     * @method resetValue
     * @return {Boolean} Whether or not the value was set.
     */
    resetValue: function() {
        return this.setValue(this._initialConfig.value);
    },
    
    /**
     * Resets the attribute config to the initial config state.
     * @method resetConfig
     */
    resetConfig: function() {
        this.configure(this._initialConfig, true);
    },
    
    /**
     * Resets the value to the current value.
     * Useful when values may have gotten out of sync with actual properties.
     * @method refresh
     * @return {Boolean} Whether or not the value was set.
     */
    refresh: function(silent) {
        this.setValue(this.value, silent);
    }
};

(function() {
    var Lang = YAHOO.util.Lang;

    /*
    Copyright (c) 2006, Yahoo! Inc. All rights reserved.
    Code licensed under the BSD License:
    http://developer.yahoo.net/yui/license.txt
    */
    
    /**
     * Provides and manages YAHOO.util.Attribute instances
     * @namespace YAHOO.util
     * @class AttributeProvider
     * @uses YAHOO.util.EventProvider
     */
    YAHOO.util.AttributeProvider = function() {};

    YAHOO.util.AttributeProvider.prototype = {
        
        /**
         * A key-value map of Attribute configurations
         * @property _configs
         * @protected (may be used by subclasses and augmentors)
         * @private
         * @type {Object}
         */
        _configs: null,
        /**
         * Returns the current value of the attribute.
         * @method get
         * @param {String} key The attribute whose value will be returned.
         * @return {Any} The current value of the attribute.
         */
        get: function(key){
            this._configs = this._configs || {};
            var config = this._configs[key];
            
            if (!config || !this._configs.hasOwnProperty(key)) {
                YAHOO.log(key + ' not found', 'error', 'AttributeProvider');
                return null;
            }
            
            return config.getValue();
        },
        
        /**
         * Sets the value of a config.
         * @method set
         * @param {String} key The name of the attribute
         * @param {Any} value The value to apply to the attribute
         * @param {Boolean} silent Whether or not to suppress change events
         * @return {Boolean} Whether or not the value was set.
         */
        set: function(key, value, silent){
            this._configs = this._configs || {};
            var config = this._configs[key];
            
            if (!config) {
                YAHOO.log('set failed: ' + key + ' not found',
                        'error', 'AttributeProvider');
                return false;
            }
            
            return config.setValue(value, silent);
        },
    
        /**
         * Returns an array of attribute names.
         * @method getAttributeKeys
         * @return {Array} An array of attribute names.
         */
        getAttributeKeys: function(){
            this._configs = this._configs;
            var keys = [], key;

            for (key in this._configs) {
                if ( Lang.hasOwnProperty(this._configs, key) &amp;&amp; 
                        !Lang.isUndefined(this._configs[key]) ) {
                    keys[keys.length] = key;
                }
            }
            
            return keys;
        },
        
        /**
         * Sets multiple attribute values.
         * @method setAttributes
         * @param {Object} map  A key-value map of attributes
         * @param {Boolean} silent Whether or not to suppress change events
         */
        setAttributes: function(map, silent){
            for (var key in map) {
                if ( Lang.hasOwnProperty(map, key) ) {
                    this.set(key, map[key], silent);
                }
            }
        },
    
        /**
         * Resets the specified attribute's value to its initial value.
         * @method resetValue
         * @param {String} key The name of the attribute
         * @param {Boolean} silent Whether or not to suppress change events
         * @return {Boolean} Whether or not the value was set
         */
        resetValue: function(key, silent){
            this._configs = this._configs || {};
            if (this._configs[key]) {
                this.set(key, this._configs[key]._initialConfig.value, silent);
                return true;
            }
            return false;
        },
    
        /**
         * Sets the attribute's value to its current value.
         * @method refresh
         * @param {String | Array} key The attribute(s) to refresh
         * @param {Boolean} silent Whether or not to suppress change events
         */
        refresh: function(key, silent) {
            this._configs = this._configs || {};
            var configs = this._configs;
            
            key = ( ( Lang.isString(key) ) ? [key] : key ) || 
                    this.getAttributeKeys();
            
            for (var i = 0, len = key.length; i &lt; len; ++i) { 
                if (configs.hasOwnProperty(key[i])) {
                    this._configs[key[i]].refresh(silent);
                }
            }
        },
    
        /**
         * Adds an Attribute to the AttributeProvider instance. 
         * @method register
         * @param {String} key The attribute's name
         * @param {Object} map A key-value map containing the
         * attribute's properties.
         * @deprecated Use setAttributeConfig
         */
        register: function(key, map) {
            this.setAttributeConfig(key, map);
        },
        
        
        /**
         * Returns the attribute's properties.
         * @method getAttributeConfig
         * @param {String} key The attribute's name
         * @private
         * @return {object} A key-value map containing all of the
         * attribute's properties.
         */
        getAttributeConfig: function(key) {
            this._configs = this._configs || {};
            var config = this._configs[key] || {};
            var map = {}; // returning a copy to prevent overrides
            
            for (key in config) {
                if ( Lang.hasOwnProperty(config, key) ) {
                    map[key] = config[key];
                }
            }
    
            return map;
        },
        
        /**
         * Sets or updates an Attribute instance's properties. 
         * @method setAttributeConfig
         * @param {String} key The attribute's name.
         * @param {Object} map A key-value map of attribute properties
         * @param {Boolean} init Whether or not this should become the intial config.
         */
        setAttributeConfig: function(key, map, init) {
            this._configs = this._configs || {};
            map = map || {};
            if (!this._configs[key]) {
                map.name = key;
                this._configs[key] = this.createAttribute(map);
            } else {
                this._configs[key].configure(map, init);
            }
        },
        
        /**
         * Sets or updates an Attribute instance's properties. 
         * @method configureAttribute
         * @param {String} key The attribute's name.
         * @param {Object} map A key-value map of attribute properties
         * @param {Boolean} init Whether or not this should become the intial config.
         * @deprecated Use setAttributeConfig
         */
        configureAttribute: function(key, map, init) {
            this.setAttributeConfig(key, map, init);
        },
        
        /**
         * Resets an attribute to its intial configuration. 
         * @method resetAttributeConfig
         * @param {String} key The attribute's name.
         * @private
         */
        resetAttributeConfig: function(key){
            this._configs = this._configs || {};
            this._configs[key].resetConfig();
        },
        
        // wrapper for EventProvider.subscribe
        // to create events on the fly
        subscribe: function(type, callback) {
            this._events = this._events || {};

            if ( !(type in this._events) ) {
                this._events[type] = this.createEvent(type);
            }

            YAHOO.util.EventProvider.prototype.subscribe.apply(this, arguments);
        },

        on: function() {
            this.subscribe.apply(this, arguments);
        },

        addListener: function() {
            this.subscribe.apply(this, arguments);
        },

        /**
         * Fires the attribute's beforeChange event. 
         * @method fireBeforeChangeEvent
         * @param {String} key The attribute's name.
         * @param {Obj} e The event object to pass to handlers.
         */
        fireBeforeChangeEvent: function(e) {
            var type = 'before';
            type += e.type.charAt(0).toUpperCase() + e.type.substr(1) + 'Change';
            e.type = type;
            return this.fireEvent(e.type, e);
        },
        
        /**
         * Fires the attribute's change event. 
         * @method fireChangeEvent
         * @param {String} key The attribute's name.
         * @param {Obj} e The event object to pass to the handlers.
         */
        fireChangeEvent: function(e) {
            e.type += 'Change';
            return this.fireEvent(e.type, e);
        },

        createAttribute: function(map) {
            return new YAHOO.util.Attribute(map, this);
        }
    };
    
    YAHOO.augment(YAHOO.util.AttributeProvider, YAHOO.util.EventProvider);
})();

(function() {
// internal shorthand
var Dom = YAHOO.util.Dom,
    AttributeProvider = YAHOO.util.AttributeProvider,
	specialTypes = {
		mouseenter: true,
		mouseleave: true
	};

/**
 * Element provides an wrapper object to simplify adding
 * event listeners, using dom methods, and managing attributes. 
 * @module element
 * @namespace YAHOO.util
 * @requires yahoo, dom, event
 */

/**
 * Element provides an wrapper object to simplify adding
 * event listeners, using dom methods, and managing attributes. 
 * @class Element
 * @uses YAHOO.util.AttributeProvider
 * @constructor
 * @param el {HTMLElement | String} The html element that 
 * represents the Element.
 * @param {Object} map A key-value map of initial config names and values
 */
var Element = function(el, map) {
    this.init.apply(this, arguments);
};

Element.DOM_EVENTS = {
    'click': true,
    'dblclick': true,
    'keydown': true,
    'keypress': true,
    'keyup': true,
    'mousedown': true,
    'mousemove': true,
    'mouseout': true, 
    'mouseover': true, 
    'mouseup': true,
    'mouseenter': true, 
    'mouseleave': true,
    'focus': true,
    'blur': true,
    'submit': true,
    'change': true
};

Element.prototype = {
    /**
     * Dom events supported by the Element instance.
     * @property DOM_EVENTS
     * @type Object
     */
    DOM_EVENTS: null,

    DEFAULT_HTML_SETTER: function(value, key) {
        var el = this.get('element');
        
        if (el) {
            el[key] = value;
        }

		return value;

    },

    DEFAULT_HTML_GETTER: function(key) {
        var el = this.get('element'),
            val;

        if (el) {
            val = el[key];
        }

        return val;
    },

    /**
     * Wrapper for HTMLElement method.
     * @method appendChild
     * @param {YAHOO.util.Element || HTMLElement} child The element to append. 
     * @return {HTMLElement} The appended DOM element. 
     */
    appendChild: function(child) {
        child = child.get ? child.get('element') : child;
        return this.get('element').appendChild(child);
    },
    
    /**
     * Wrapper for HTMLElement method.
     * @method getElementsByTagName
     * @param {String} tag The tagName to collect
     * @return {HTMLCollection} A collection of DOM elements. 
     */
    getElementsByTagName: function(tag) {
        return this.get('element').getElementsByTagName(tag);
    },
    
    /**
     * Wrapper for HTMLElement method.
     * @method hasChildNodes
     * @return {Boolean} Whether or not the element has childNodes
     */
    hasChildNodes: function() {
        return this.get('element').hasChildNodes();
    },
    
    /**
     * Wrapper for HTMLElement method.
     * @method insertBefore
     * @param {HTMLElement} element The HTMLElement to insert
     * @param {HTMLElement} before The HTMLElement to insert
     * the element before.
     * @return {HTMLElement} The inserted DOM element. 
     */
    insertBefore: function(element, before) {
        element = element.get ? element.get('element') : element;
        before = (before &amp;&amp; before.get) ? before.get('element') : before;
        
        return this.get('element').insertBefore(element, before);
    },
    
    /**
     * Wrapper for HTMLElement method.
     * @method removeChild
     * @param {HTMLElement} child The HTMLElement to remove
     * @return {HTMLElement} The removed DOM element. 
     */
    removeChild: function(child) {
        child = child.get ? child.get('element') : child;
        return this.get('element').removeChild(child);
    },
    
    /**
     * Wrapper for HTMLElement method.
     * @method replaceChild
     * @param {HTMLElement} newNode The HTMLElement to insert
     * @param {HTMLElement} oldNode The HTMLElement to replace
     * @return {HTMLElement} The replaced DOM element. 
     */
    replaceChild: function(newNode, oldNode) {
        newNode = newNode.get ? newNode.get('element') : newNode;
        oldNode = oldNode.get ? oldNode.get('element') : oldNode;
        return this.get('element').replaceChild(newNode, oldNode);
    },

    
    /**
     * Registers Element specific attributes.
     * @method initAttributes
     * @param {Object} map A key-value map of initial attribute configs
     */
    initAttributes: function(map) {
    },

    /**
     * Adds a listener for the given event.  These may be DOM or 
     * customEvent listeners.  Any event that is fired via fireEvent
     * can be listened for.  All handlers receive an event object. 
     * @method addListener
     * @param {String} type The name of the event to listen for
     * @param {Function} fn The handler to call when the event fires
     * @param {Any} obj A variable to pass to the handler
     * @param {Object} scope The object to use for the scope of the handler 
     */
    addListener: function(type, fn, obj, scope) {

        scope = scope || this;

        var Event = YAHOO.util.Event,
			el = this.get('element') || this.get('id'),
        	self = this;


		if (specialTypes[type] &amp;&amp; !Event._createMouseDelegate) {
	        YAHOO.log(&quot;Using a &quot; + type + &quot; event requires the event-mouseenter module&quot;, &quot;error&quot;, &quot;Event&quot;);
	        return false;	
		}


        if (!this._events[type]) { // create on the fly

            if (el &amp;&amp; this.DOM_EVENTS[type]) {
				Event.on(el, type, function(e, matchedEl) {

					// Supplement IE with target, currentTarget relatedTarget

	                if (e.srcElement &amp;&amp; !e.target) { 
	                    e.target = e.srcElement;
	                }

					if ((e.toElement &amp;&amp; !e.relatedTarget) || (e.fromElement &amp;&amp; !e.relatedTarget)) {
						e.relatedTarget = Event.getRelatedTarget(e);
					}
					
					if (!e.currentTarget) {
						e.currentTarget = el;
					}

					//	Note: matchedEl el is passed back for delegated listeners
		            self.fireEvent(type, e, matchedEl);

		        }, obj, scope);
            }
            this.createEvent(type, {scope: this});
        }
        
        return YAHOO.util.EventProvider.prototype.subscribe.apply(this, arguments); // notify via customEvent
    },


    /**
     * Alias for addListener
     * @method on
     * @param {String} type The name of the event to listen for
     * @param {Function} fn The function call when the event fires
     * @param {Any} obj A variable to pass to the handler
     * @param {Object} scope The object to use for the scope of the handler 
     */
    on: function() {
        return this.addListener.apply(this, arguments);
    },
    
    /**
     * Alias for addListener
     * @method subscribe
     * @param {String} type The name of the event to listen for
     * @param {Function} fn The function call when the event fires
     * @param {Any} obj A variable to pass to the handler
     * @param {Object} scope The object to use for the scope of the handler 
     */
    subscribe: function() {
        return this.addListener.apply(this, arguments);
    },
    
    /**
     * Remove an event listener
     * @method removeListener
     * @param {String} type The name of the event to listen for
     * @param {Function} fn The function call when the event fires
     */
    removeListener: function(type, fn) {
        return this.unsubscribe.apply(this, arguments);
    },
    
    /**
     * Wrapper for Dom method.
     * @method addClass
     * @param {String} className The className to add
     */
    addClass: function(className) {
        Dom.addClass(this.get('element'), className);
    },
    
    /**
     * Wrapper for Dom method.
     * @method getElementsByClassName
     * @param {String} className The className to collect
     * @param {String} tag (optional) The tag to use in
     * conjunction with class name
     * @return {Array} Array of HTMLElements
     */
    getElementsByClassName: function(className, tag) {
        return Dom.getElementsByClassName(className, tag,
                this.get('element') );
    },
    
    /**
     * Wrapper for Dom method.
     * @method hasClass
     * @param {String} className The className to add
     * @return {Boolean} Whether or not the element has the class name
     */
    hasClass: function(className) {
        return Dom.hasClass(this.get('element'), className); 
    },
    
    /**
     * Wrapper for Dom method.
     * @method removeClass
     * @param {String} className The className to remove
     */
    removeClass: function(className) {
        return Dom.removeClass(this.get('element'), className);
    },
    
    /**
     * Wrapper for Dom method.
     * @method replaceClass
     * @param {String} oldClassName The className to replace
     * @param {String} newClassName The className to add
     */
    replaceClass: function(oldClassName, newClassName) {
        return Dom.replaceClass(this.get('element'), 
                oldClassName, newClassName);
    },
    
    /**
     * Wrapper for Dom method.
     * @method setStyle
     * @param {String} property The style property to set
     * @param {String} value The value to apply to the style property
     */
    setStyle: function(property, value) {
        return Dom.setStyle(this.get('element'),  property, value); // TODO: always queuing?
    },
    
    /**
     * Wrapper for Dom method.
     * @method getStyle
     * @param {String} property The style property to retrieve
     * @return {String} The current value of the property
     */
    getStyle: function(property) {
        return Dom.getStyle(this.get('element'),  property);
    },
    
    /**
     * Apply any queued set calls.
     * @method fireQueue
     */
    fireQueue: function() {
        var queue = this._queue;
        for (var i = 0, len = queue.length; i &lt; len; ++i) {
            this[queue[i][0]].apply(this, queue[i][1]);
        }
    },
    
    /**
     * Appends the HTMLElement into either the supplied parentNode.
     * @method appendTo
     * @param {HTMLElement | Element} parentNode The node to append to
     * @param {HTMLElement | Element} before An optional node to insert before
     * @return {HTMLElement} The appended DOM element. 
     */
    appendTo: function(parent, before) {
        parent = (parent.get) ?  parent.get('element') : Dom.get(parent);
        
        this.fireEvent('beforeAppendTo', {
            type: 'beforeAppendTo',
            target: parent
        });
        
        
        before = (before &amp;&amp; before.get) ? 
                before.get('element') : Dom.get(before);
        var element = this.get('element');
        
        if (!element) {
            YAHOO.log('appendTo failed: element not available',
                    'error', 'Element');
            return false;
        }
        
        if (!parent) {
            YAHOO.log('appendTo failed: parent not available',
                    'error', 'Element');
            return false;
        }
        
        if (element.parent != parent) {
            if (before) {
                parent.insertBefore(element, before);
            } else {
                parent.appendChild(element);
            }
        }
        
        YAHOO.log(element + 'appended to ' + parent);
        
        this.fireEvent('appendTo', {
            type: 'appendTo',
            target: parent
        });

        return element;
    },
    
    get: function(key) {
        var configs = this._configs || {},
            el = configs.element; // avoid loop due to 'element'

        if (el &amp;&amp; !configs[key] &amp;&amp; !YAHOO.lang.isUndefined(el.value[key]) ) {
            this._setHTMLAttrConfig(key);
        }

        return AttributeProvider.prototype.get.call(this, key);
    },

    setAttributes: function(map, silent) {
        // set based on configOrder
        var done = {},
            configOrder = this._configOrder;

        // set based on configOrder
        for (var i = 0, len = configOrder.length; i &lt; len; ++i) {
            if (map[configOrder[i]] !== undefined) {
                done[configOrder[i]] = true;
                this.set(configOrder[i], map[configOrder[i]], silent);
            }
        }

        // unconfigured (e.g. Dom attributes)
        for (var att in map) {
            if (map.hasOwnProperty(att) &amp;&amp; !done[att]) {
                this.set(att, map[att], silent);
            }
        }
    },

    set: function(key, value, silent) {
        var el = this.get('element');
        if (!el) {
            this._queue[this._queue.length] = ['set', arguments];
            if (this._configs[key]) {
                this._configs[key].value = value; // so &quot;get&quot; works while queueing
            
            }
            return;
        }
        
        // set it on the element if not configured and is an HTML attribute
        if ( !this._configs[key] &amp;&amp; !YAHOO.lang.isUndefined(el[key]) ) {
            this._setHTMLAttrConfig(key);
        }

        return AttributeProvider.prototype.set.apply(this, arguments);
    },
    
    setAttributeConfig: function(key, map, init) {
        this._configOrder.push(key);
        AttributeProvider.prototype.setAttributeConfig.apply(this, arguments);
    },

    createEvent: function(type, config) {
        this._events[type] = true;
        return AttributeProvider.prototype.createEvent.apply(this, arguments);
    },
    
    init: function(el, attr) {
        this._initElement(el, attr); 
    },

    destroy: function() {
        var el = this.get('element');
        YAHOO.util.Event.purgeElement(el, true); // purge DOM listeners recursively
        this.unsubscribeAll(); // unsubscribe all custom events

        if (el &amp;&amp; el.parentNode) {
            el.parentNode.removeChild(el); // pull from the DOM
        }

        // revert initial configs
        this._queue = [];
        this._events = {};
        this._configs = {};
        this._configOrder = []; 
    },

    _initElement: function(el, attr) {
        this._queue = this._queue || [];
        this._events = this._events || {};
        this._configs = this._configs || {};
        this._configOrder = []; 
        attr = attr || {};
        attr.element = attr.element || el || null;

        var isReady = false;  // to determine when to init HTMLElement and content

        var DOM_EVENTS = Element.DOM_EVENTS;
        this.DOM_EVENTS = this.DOM_EVENTS || {};

        for (var event in DOM_EVENTS) {
            if (DOM_EVENTS.hasOwnProperty(event)) {
                this.DOM_EVENTS[event] = DOM_EVENTS[event];
            }
        }

        if (typeof attr.element === 'string') { // register ID for get() access
            this._setHTMLAttrConfig('id', { value: attr.element });
        }

        if (Dom.get(attr.element)) {
            isReady = true;
            this._initHTMLElement(attr);
            this._initContent(attr);
        }

        YAHOO.util.Event.onAvailable(attr.element, function() {
            if (!isReady) { // otherwise already done
                this._initHTMLElement(attr);
            }

            this.fireEvent('available', { type: 'available', target: Dom.get(attr.element) });  
        }, this, true);
        
        YAHOO.util.Event.onContentReady(attr.element, function() {
            if (!isReady) { // otherwise already done
                this._initContent(attr);
            }
            this.fireEvent('contentReady', { type: 'contentReady', target: Dom.get(attr.element) });  
        }, this, true);
    },

    _initHTMLElement: function(attr) {
        /**
         * The HTMLElement the Element instance refers to.
         * @attribute element
         * @type HTMLElement
         */
        this.setAttributeConfig('element', {
            value: Dom.get(attr.element),
            readOnly: true
         });
    },

    _initContent: function(attr) {
        this.initAttributes(attr);
        this.setAttributes(attr, true);
        this.fireQueue();

    },

    /**
     * Sets the value of the property and fires beforeChange and change events.
     * @private
     * @method _setHTMLAttrConfig
     * @param {YAHOO.util.Element} element The Element instance to
     * register the config to.
     * @param {String} key The name of the config to register
     * @param {Object} map A key-value map of the config's params
     */
    _setHTMLAttrConfig: function(key, map) {
        var el = this.get('element');
        map = map || {};
        map.name = key;

        map.setter = map.setter || this.DEFAULT_HTML_SETTER;
        map.getter = map.getter || this.DEFAULT_HTML_GETTER;

        map.value = map.value || el[key];
        this._configs[key] = new YAHOO.util.Attribute(map, this);
    }
};

/**
 * Fires when the Element's HTMLElement can be retrieved by Id.
 * &lt;p&gt;See: &lt;a href=&quot;#addListener&quot;&gt;Element.addListener&lt;/a&gt;&lt;/p&gt;
 * &lt;p&gt;&lt;strong&gt;Event fields:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;&amp;lt;String&amp;gt; type&lt;/code&gt; available&lt;br&gt;
 * &lt;code&gt;&amp;lt;HTMLElement&amp;gt;
 * target&lt;/code&gt; the HTMLElement bound to this Element instance&lt;br&gt;
 * &lt;p&gt;&lt;strong&gt;Usage:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;var handler = function(e) {var target = e.target};&lt;br&gt;
 * myTabs.addListener('available', handler);&lt;/code&gt;&lt;/p&gt;
 * @event available
 */
 
/**
 * Fires when the Element's HTMLElement subtree is rendered.
 * &lt;p&gt;See: &lt;a href=&quot;#addListener&quot;&gt;Element.addListener&lt;/a&gt;&lt;/p&gt;
 * &lt;p&gt;&lt;strong&gt;Event fields:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;&amp;lt;String&amp;gt; type&lt;/code&gt; contentReady&lt;br&gt;
 * &lt;code&gt;&amp;lt;HTMLElement&amp;gt;
 * target&lt;/code&gt; the HTMLElement bound to this Element instance&lt;br&gt;
 * &lt;p&gt;&lt;strong&gt;Usage:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;var handler = function(e) {var target = e.target};&lt;br&gt;
 * myTabs.addListener('contentReady', handler);&lt;/code&gt;&lt;/p&gt;
 * @event contentReady
 */

/**
 * Fires before the Element is appended to another Element.
 * &lt;p&gt;See: &lt;a href=&quot;#addListener&quot;&gt;Element.addListener&lt;/a&gt;&lt;/p&gt;
 * &lt;p&gt;&lt;strong&gt;Event fields:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;&amp;lt;String&amp;gt; type&lt;/code&gt; beforeAppendTo&lt;br&gt;
 * &lt;code&gt;&amp;lt;HTMLElement/Element&amp;gt;
 * target&lt;/code&gt; the HTMLElement/Element being appended to 
 * &lt;p&gt;&lt;strong&gt;Usage:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;var handler = function(e) {var target = e.target};&lt;br&gt;
 * myTabs.addListener('beforeAppendTo', handler);&lt;/code&gt;&lt;/p&gt;
 * @event beforeAppendTo
 */

/**
 * Fires after the Element is appended to another Element.
 * &lt;p&gt;See: &lt;a href=&quot;#addListener&quot;&gt;Element.addListener&lt;/a&gt;&lt;/p&gt;
 * &lt;p&gt;&lt;strong&gt;Event fields:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;&amp;lt;String&amp;gt; type&lt;/code&gt; appendTo&lt;br&gt;
 * &lt;code&gt;&amp;lt;HTMLElement/Element&amp;gt;
 * target&lt;/code&gt; the HTMLElement/Element being appended to 
 * &lt;p&gt;&lt;strong&gt;Usage:&lt;/strong&gt;&lt;br&gt;
 * &lt;code&gt;var handler = function(e) {var target = e.target};&lt;br&gt;
 * myTabs.addListener('appendTo', handler);&lt;/code&gt;&lt;/p&gt;
 * @event appendTo
 */

YAHOO.augment(Element, AttributeProvider);
YAHOO.util.Element = Element;
})();

YAHOO.register(&quot;element&quot;, YAHOO.util.Element, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * Provides a mechanism to fetch remote resources and
 * insert them into a document
 * This utility can fetch JavaScript and CSS files, inserting script
 * tags for script and link tags for CSS.  Note, this
 * is done via the normal browser mechanisms for inserting
 * these resources and making the content available to
 * code that would access it.  Be careful when retreiving
 * remote resources.  Only use this utility to fetch
 * files from sites you trust.
 *
 * @module get
 * @requires yahoo
 */

/**
 * Fetches and inserts one or more script or link nodes into the document.
 * This utility can fetch JavaScript and CSS files, inserting script
 * tags for script and link tags for CSS.  Note, this
 * is done via the normal browser mechanisms for inserting
 * these resources and making the content available to
 * code that would access it.  Be careful when retreiving
 * remote resources.  Only use this utility to fetch
 * files from sites you trust.
 *
 * @namespace YAHOO.util
 * @class YAHOO.util.Get
 */
YAHOO.util.Get = function() {

    /**
     * hash of queues to manage multiple requests
     * @property queues
     * @private
     */
    var queues={},

    /**
     * queue index used to generate transaction ids
     * @property qidx
     * @type int
     * @private
     */
        qidx=0,

    /**
     * node index used to generate unique node ids
     * @property nidx
     * @type int
     * @private
     */
        nidx=0,

    /**
     * interal property used to prevent multiple simultaneous purge
     * processes
     * @property purging
     * @type boolean
     * @private
     */
        _purging=false,

        ua=YAHOO.env.ua,

        lang=YAHOO.lang,

    _fail,
    _purge,
    _track,

    /**
     * Generates an HTML element, this is not appended to a document
     * @method _node
     * @param type {string} the type of element
     * @param attr {string} the attributes
     * @param win {Window} optional window to create the element in
     * @return {HTMLElement} the generated node
     * @private
     */
    _node = function(type, attr, win) {
        var w = win || window, d=w.document, n=d.createElement(type), i;

        for (i in attr) {
            if (attr.hasOwnProperty(i)) {
                n.setAttribute(i, attr[i]);
            }
        }

        return n;
    },

    /**
     * Generates a link node
     * @method _linkNode
     * @param url {string} the url for the css file
     * @param win {Window} optional window to create the node in
     * @return {HTMLElement} the generated node
     * @private
     */
    _linkNode = function(url, win, attributes) {

        var o = {
            id:   &quot;yui__dyn_&quot; + (nidx++),
            type: &quot;text/css&quot;,
            rel:  &quot;stylesheet&quot;,
            href: url
        };

        if (attributes) {
            lang.augmentObject(o, attributes);
        }

        return _node(&quot;link&quot;, o, win);
    },

    /**
     * Generates a script node
     * @method _scriptNode
     * @param url {string} the url for the script file
     * @param win {Window} optional window to create the node in
     * @return {HTMLElement} the generated node
     * @private
     */
    _scriptNode = function(url, win, attributes) {
        var o = {
            id:   &quot;yui__dyn_&quot; + (nidx++),
            type: &quot;text/javascript&quot;,
            src:  url
        };

        if (attributes) {
            lang.augmentObject(o, attributes);
        }

        return _node(&quot;script&quot;, o, win);
    },

    /**
     * Returns the data payload for callback functions
     * @method _returnData
     * @private
     */
    _returnData = function(q, msg) {
        return {
                tId: q.tId,
                win: q.win,
                data: q.data,
                nodes: q.nodes,
                msg: msg,
                purge: function() {
                    _purge(this.tId);
                }
            };
    },

    _get = function(nId, tId) {
        var q = queues[tId],
            n = (lang.isString(nId)) ? q.win.document.getElementById(nId) : nId;
        if (!n) {
            _fail(tId, &quot;target node not found: &quot; + nId);
        }

        return n;
    },


    /**
     * The request is complete, so executing the requester's callback
     * @method _finish
     * @param id {string} the id of the request
     * @private
     */
    _finish = function(id) {
        YAHOO.log(&quot;Finishing transaction &quot; + id);
        var q = queues[id], msg, context;
        q.finished = true;

        if (q.aborted) {
            msg = &quot;transaction &quot; + id + &quot; was aborted&quot;;
            _fail(id, msg);
            return;
        }

        // execute success callback
        if (q.onSuccess) {
            context = q.scope || q.win;
            q.onSuccess.call(context, _returnData(q));
        }
    },

    /**
     * Timeout detected
     * @method _timeout
     * @param id {string} the id of the request
     * @private
     */
    _timeout = function(id) {
        YAHOO.log(&quot;Timeout &quot; + id, &quot;info&quot;, &quot;get&quot;);
        var q = queues[id], context;
        if (q.onTimeout) {
            context = q.scope || q;
            q.onTimeout.call(context, _returnData(q));
        }
    },

    /**
     * Loads the next item for a given request
     * @method _next
     * @param id {string} the id of the request
     * @param loaded {string} the url that was just loaded, if any
     * @private
     */
    _next = function(id, loaded) {

        YAHOO.log(&quot;_next: &quot; + id + &quot;, loaded: &quot; + loaded, &quot;info&quot;, &quot;Get&quot;);

        var q = queues[id], w=q.win, d=w.document, h=d.getElementsByTagName(&quot;head&quot;)[0],
            n, msg, url, s, extra;

        if (q.timer) {
            // Y.log('cancel timer');
            q.timer.cancel();
        }

        if (q.aborted) {
            msg = &quot;transaction &quot; + id + &quot; was aborted&quot;;
            _fail(id, msg);
            return;
        }

        if (loaded) {
            q.url.shift();
            if (q.varName) {
                q.varName.shift();
            }
        } else {
            // This is the first pass: make sure the url is an array
            q.url = (lang.isString(q.url)) ? [q.url] : q.url;
            if (q.varName) {
                q.varName = (lang.isString(q.varName)) ? [q.varName] : q.varName;
            }
        }


        if (q.url.length === 0) {
            // Safari 2.x workaround - There is no way to know when
            // a script is ready in versions of Safari prior to 3.x.
            // Adding an extra node reduces the problem, but doesn't
            // eliminate it completely because the browser executes
            // them asynchronously.
            if (q.type === &quot;script&quot; &amp;&amp; ua.webkit &amp;&amp; ua.webkit &lt; 420 &amp;&amp;
                    !q.finalpass &amp;&amp; !q.varName) {
                // Add another script node.  This does not guarantee that the
                // scripts will execute in order, but it does appear to fix the
                // problem on fast connections more effectively than using an
                // arbitrary timeout.  It is possible that the browser does
                // block subsequent script execution in this case for a limited
                // time.
                extra = _scriptNode(null, q.win, q.attributes);
                extra.innerHTML='YAHOO.util.Get._finalize(&quot;' + id + '&quot;);';
                q.nodes.push(extra); h.appendChild(extra);

            } else {
                _finish(id);
            }

            return;
        }


        url = q.url[0];

        // if the url is undefined, this is probably a trailing comma problem in IE
        if (!url) {
            q.url.shift();
            YAHOO.log('skipping empty url');
            return _next(id);
        }

        YAHOO.log(&quot;attempting to load &quot; + url, &quot;info&quot;, &quot;Get&quot;);

        if (q.timeout) {
            // Y.log('create timer');
            q.timer = lang.later(q.timeout, q, _timeout, id);
        }

        if (q.type === &quot;script&quot;) {
            n = _scriptNode(url, w, q.attributes);
        } else {
            n = _linkNode(url, w, q.attributes);
        }

        // track this node's load progress
        _track(q.type, n, id, url, w, q.url.length);

        // add the node to the queue so we can return it to the user supplied callback
        q.nodes.push(n);

        // add it to the head or insert it before 'insertBefore'
        if (q.insertBefore) {
            s = _get(q.insertBefore, id);
            if (s) {
                s.parentNode.insertBefore(n, s);
            }
        } else {
            h.appendChild(n);
        }

        YAHOO.log(&quot;Appending node: &quot; + url, &quot;info&quot;, &quot;Get&quot;);

        // FireFox does not support the onload event for link nodes, so there is
        // no way to make the css requests synchronous. This means that the css
        // rules in multiple files could be applied out of order in this browser
        // if a later request returns before an earlier one.  Safari too.
        if ((ua.webkit || ua.gecko) &amp;&amp; q.type === &quot;css&quot;) {
            _next(id, url);
        }
    },

    /**
     * Removes processed queues and corresponding nodes
     * @method _autoPurge
     * @private
     */
    _autoPurge = function() {

        if (_purging) {
            return;
        }

        _purging = true;

        var i, q;

        for (i in queues) {
            if (queues.hasOwnProperty(i)) {
                q = queues[i];
                if (q.autopurge &amp;&amp; q.finished) {
                    _purge(q.tId);
                    delete queues[i];
                }
            }
        }

        _purging = false;
    },

    /**
     * Saves the state for the request and begins loading
     * the requested urls
     * @method queue
     * @param type {string} the type of node to insert
     * @param url {string} the url to load
     * @param opts the hash of options for this request
     * @private
     */
    _queue = function(type, url, opts) {

        var id = &quot;q&quot; + (qidx++), q;
        opts = opts || {};

        if (qidx % YAHOO.util.Get.PURGE_THRESH === 0) {
            _autoPurge();
        }

        queues[id] = lang.merge(opts, {
            tId: id,
            type: type,
            url: url,
            finished: false,
            aborted: false,
            nodes: []
        });

        q = queues[id];
        q.win = q.win || window;
        q.scope = q.scope || q.win;
        q.autopurge = (&quot;autopurge&quot; in q) ? q.autopurge :
                      (type === &quot;script&quot;) ? true : false;

        q.attributes = q.attributes || {};
        q.attributes.charset = opts.charset || q.attributes.charset || 'utf-8';

        lang.later(0, q, _next, id);

        return {
            tId: id
        };
    };

    /**
     * Detects when a node has been loaded.  In the case of
     * script nodes, this does not guarantee that contained
     * script is ready to use.
     * @method _track
     * @param type {string} the type of node to track
     * @param n {HTMLElement} the node to track
     * @param id {string} the id of the request
     * @param url {string} the url that is being loaded
     * @param win {Window} the targeted window
     * @param qlength the number of remaining items in the queue,
     * including this one
     * @param trackfn {Function} function to execute when finished
     * the default is _next
     * @private
     */
    _track = function(type, n, id, url, win, qlength, trackfn) {
        var f = trackfn || _next, rs, q, a, freq, w, l, i, msg;

        // IE supports the readystatechange event for script and css nodes
        if (ua.ie) {
            n.onreadystatechange = function() {
                rs = this.readyState;
                if (&quot;loaded&quot; === rs || &quot;complete&quot; === rs) {
                    YAHOO.log(id + &quot; onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                    n.onreadystatechange = null;
                    f(id, url);
                }
            };

        // webkit prior to 3.x is problemmatic
        } else if (ua.webkit) {

            if (type === &quot;script&quot;) {

                // Safari 3.x supports the load event for script nodes (DOM2)
                if (ua.webkit &gt;= 420) {

                    n.addEventListener(&quot;load&quot;, function() {
                        YAHOO.log(id + &quot; DOM2 onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                        f(id, url);
                    });

                // Nothing can be done with Safari &lt; 3.x except to pause and hope
                // for the best, particularly after last script is inserted. The
                // scripts will always execute in the order they arrive, not
                // necessarily the order in which they were inserted.  To support
                // script nodes with complete reliability in these browsers, script
                // nodes either need to invoke a function in the window once they
                // are loaded or the implementer needs to provide a well-known
                // property that the utility can poll for.
                } else {
                    // Poll for the existence of the named variable, if it
                    // was supplied.
                    q = queues[id];
                    if (q.varName) {
                        freq = YAHOO.util.Get.POLL_FREQ;
                        YAHOO.log(&quot;Polling for &quot; + q.varName[0]);
                        q.maxattempts = YAHOO.util.Get.TIMEOUT/freq;
                        q.attempts = 0;
                        q._cache = q.varName[0].split(&quot;.&quot;);
                        q.timer = lang.later(freq, q, function(o) {
                            a = this._cache;
                            l = a.length;
                            w = this.win;
                            for (i=0; i&lt;l; i=i+1) {
                                w = w[a[i]];
                                if (!w) {
                                    // if we have exausted our attempts, give up
                                    this.attempts++;
                                    if (this.attempts++ &gt; this.maxattempts) {
                                        msg = &quot;Over retry limit, giving up&quot;;
                                        q.timer.cancel();
                                        _fail(id, msg);
                                    } else {
                                        YAHOO.log(a[i] + &quot; failed, retrying&quot;);
                                    }
                                    return;
                                }
                            }

                            YAHOO.log(&quot;Safari poll complete&quot;);

                            q.timer.cancel();
                            f(id, url);

                        }, null, true);
                    } else {
                        lang.later(YAHOO.util.Get.POLL_FREQ, null, f, [id, url]);
                    }
                }
            }

        // FireFox and Opera support onload (but not DOM2 in FF) handlers for
        // script nodes.  Opera, but not FF, supports the onload event for link
        // nodes.
        } else {
            n.onload = function() {
                YAHOO.log(id + &quot; onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                f(id, url);
            };
        }
    };

    /*
     * The request failed, execute fail handler with whatever
     * was accomplished.  There isn't a failure case at the
     * moment unless you count aborted transactions
     * @method _fail
     * @param id {string} the id of the request
     * @private
     */
    _fail = function(id, msg) {
        YAHOO.log(&quot;get failure: &quot; + msg, &quot;warn&quot;, &quot;Get&quot;);
        var q = queues[id], context;
        // execute failure callback
        if (q.onFailure) {
            context = q.scope || q.win;
            q.onFailure.call(context, _returnData(q, msg));
        }
    };

    /**
     * Removes the nodes for the specified queue
     * @method _purge
     * @private
     */
    _purge = function(tId) {
        if (queues[tId]) {

            var q     = queues[tId],
                nodes = q.nodes,
                l     = nodes.length,
                d     = q.win.document,
                h     = d.getElementsByTagName(&quot;head&quot;)[0],
                sib, i, node, attr;

            if (q.insertBefore) {
                sib = _get(q.insertBefore, tId);
                if (sib) {
                    h = sib.parentNode;
                }
            }

            for (i=0; i&lt;l; i=i+1) {
                node = nodes[i];
                if (node.clearAttributes) {
                    node.clearAttributes();
                } else {
                    for (attr in node) {
                        if (node.hasOwnProperty(attr)) {
                            delete node[attr];
                        }
                    }
                }

                h.removeChild(node);
            }

            q.nodes = [];
        }
    };


    return {

        /**
         * The default poll freqency in ms, when needed
         * @property POLL_FREQ
         * @static
         * @type int
         * @default 10
         */
        POLL_FREQ: 10,

        /**
         * The number of request required before an automatic purge.
         * property PURGE_THRESH
         * @static
         * @type int
         * @default 20
         */
        PURGE_THRESH: 20,

        /**
         * The length time to poll for varName when loading a script in
         * Safari 2.x before the transaction fails.
         * property TIMEOUT
         * @static
         * @type int
         * @default 2000
         */
        TIMEOUT: 2000,

        /**
         * Called by the the helper for detecting script load in Safari
         * @method _finalize
         * @param id {string} the transaction id
         * @private
         */
        _finalize: function(id) {
            YAHOO.log(id + &quot; finalized &quot;, &quot;info&quot;, &quot;Get&quot;);
            lang.later(0, null, _finish, id);
        },

        /**
         * Abort a transaction
         * @method abort
         * @param {string|object} either the tId or the object returned from
         * script() or css()
         */
        abort: function(o) {
            var id = (lang.isString(o)) ? o : o.tId,
                q = queues[id];
            if (q) {
                YAHOO.log(&quot;Aborting &quot; + id, &quot;info&quot;, &quot;Get&quot;);
                q.aborted = true;
            }
        },

        /**
         * Fetches and inserts one or more script nodes into the head
         * of the current document or the document in a specified window.
         *
         * @method script
         * @static
         * @param url {string|string[]} the url or urls to the script(s)
         * @param opts {object} Options:
         * &lt;dl&gt;
         * &lt;dt&gt;onSuccess&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the script(s) are finished loading
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;onFailure&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the script load operation fails
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted successfully&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove any nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;onTimeout&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when a timeout occurs.
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;scope&lt;/dt&gt;
         * &lt;dd&gt;the execution context for the callbacks&lt;/dd&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;a window other than the one the utility occupies&lt;/dd&gt;
         * &lt;dt&gt;autopurge&lt;/dt&gt;
         * &lt;dd&gt;
         * setting to true will let the utilities cleanup routine purge
         * the script once loaded
         * &lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;
         * data that is supplied to the callback when the script(s) are
         * loaded.
         * &lt;/dd&gt;
         * &lt;dt&gt;varName&lt;/dt&gt;
         * &lt;dd&gt;
         * variable that should be available when a script is finished
         * loading.  Used to help Safari 2.x and below with script load
         * detection.  The type of this property should match what was
         * passed into the url parameter: if loading a single url, a
         * string can be supplied.  If loading multiple scripts, you
         * must supply an array that contains the variable name for
         * each script.
         * &lt;/dd&gt;
         * &lt;dt&gt;insertBefore&lt;/dt&gt;
         * &lt;dd&gt;node or node id that will become the new node's nextSibling&lt;/dd&gt;
         * &lt;/dl&gt;
         * &lt;dt&gt;charset&lt;/dt&gt;
         * &lt;dd&gt;Node charset, deprecated, use 'attributes'&lt;/dd&gt;
         * &lt;dt&gt;attributes&lt;/dt&gt;
         * &lt;dd&gt;A hash of attributes to apply to dynamic nodes.&lt;/dd&gt;
         * &lt;dt&gt;timeout&lt;/dt&gt;
         * &lt;dd&gt;Number of milliseconds to wait before aborting and firing the timeout event&lt;/dd&gt;
         * &lt;pre&gt;
         * // assumes yahoo, dom, and event are already on the page
         * &amp;nbsp;&amp;nbsp;YAHOO.util.Get.script(
         * &amp;nbsp;&amp;nbsp;[&quot;http://yui.yahooapis.com/2.7.0/build/dragdrop/dragdrop-min.js&quot;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&quot;http://yui.yahooapis.com/2.7.0/build/animation/animation-min.js&quot;], &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;onSuccess: function(o) &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;YAHOO.log(o.data); // foo
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;new YAHOO.util.DDProxy(&quot;dd1&quot;); // also new o.reference(&quot;dd1&quot;); would work
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;this.log(&quot;won't cause error because YAHOO is the scope&quot;);
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;this.log(o.nodes.length === 2) // true
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;// o.purge(); // optionally remove the script nodes immediately
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;#125;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;onFailure: function(o) &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;YAHOO.log(&quot;transaction failed&quot;);
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;#125;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;data: &quot;foo&quot;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;timeout: 10000, // 10 second timeout
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;scope: YAHOO,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;// win: otherframe // target another window/frame
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;autopurge: true // allow the utility to choose when to remove the nodes
         * &amp;nbsp;&amp;nbsp;&amp;#125;);
         * &lt;/pre&gt;
         * @return {tId: string} an object containing info about the transaction
         */
        script: function(url, opts) { return _queue(&quot;script&quot;, url, opts); },

        /**
         * Fetches and inserts one or more css link nodes into the
         * head of the current document or the document in a specified
         * window.
         * @method css
         * @static
         * @param url {string} the url or urls to the css file(s)
         * @param opts Options:
         * &lt;dl&gt;
         * &lt;dt&gt;onSuccess&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the css file(s) are finished loading
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;win&lt;/dl&gt;
         * &lt;dd&gt;the window the link nodes(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;scope&lt;/dt&gt;
         * &lt;dd&gt;the execution context for the callbacks&lt;/dd&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;a window other than the one the utility occupies&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;
         * data that is supplied to the callbacks when the nodes(s) are
         * loaded.
         * &lt;/dd&gt;
         * &lt;dt&gt;insertBefore&lt;/dt&gt;
         * &lt;dd&gt;node or node id that will become the new node's nextSibling&lt;/dd&gt;
         * &lt;dt&gt;charset&lt;/dt&gt;
         * &lt;dd&gt;Node charset, deprecated, use 'attributes'&lt;/dd&gt;
         * &lt;dt&gt;attributes&lt;/dt&gt;
         * &lt;dd&gt;A hash of attributes to apply to dynamic nodes.&lt;/dd&gt;
         * &lt;/dl&gt;
         * &lt;pre&gt;
         *      YAHOO.util.Get.css(&quot;http://yui.yahooapis.com/2.7.0/build/menu/assets/skins/sam/menu.css&quot;);
         * &lt;/pre&gt;
         * &lt;pre&gt;
         *      YAHOO.util.Get.css([&quot;http://yui.yahooapis.com/2.7.0/build/menu/assets/skins/sam/menu.css&quot;,
         *                          &quot;http://yui.yahooapis.com/2.7.0/build/logger/assets/skins/sam/logger.css&quot;]);
         * &lt;/pre&gt;
         * @return {tId: string} an object containing info about the transaction
         */
        css: function(url, opts) {
            return _queue(&quot;css&quot;, url, opts);
        }
    };
}();

YAHOO.register(&quot;get&quot;, YAHOO.util.Get, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * The YAHOO object is the single global object used by YUI Library.  It
 * contains utility function for setting up namespaces, inheritance, and
 * logging.  YAHOO.util, YAHOO.widget, and YAHOO.example are namespaces
 * created automatically for and used by the library.
 * @module yahoo
 * @title  YAHOO Global
 */

/**
 * YAHOO_config is not included as part of the library.  Instead it is an
 * object that can be defined by the implementer immediately before
 * including the YUI library.  The properties included in this object
 * will be used to configure global properties needed as soon as the
 * library begins to load.
 * @class YAHOO_config
 * @static
 */

/**
 * A reference to a function that will be executed every time a YAHOO module
 * is loaded.  As parameter, this function will receive the version
 * information for the module. See &lt;a href=&quot;YAHOO.env.html#getVersion&quot;&gt;
 * YAHOO.env.getVersion&lt;/a&gt; for the description of the version data structure.
 * @property listener
 * @type Function
 * @static
 * @default undefined
 */

/**
 * Set to true if the library will be dynamically loaded after window.onload.
 * Defaults to false
 * @property injecting
 * @type boolean
 * @static
 * @default undefined
 */

/**
 * Instructs the yuiloader component to dynamically load yui components and
 * their dependencies.  See the yuiloader documentation for more information
 * about dynamic loading
 * @property load
 * @static
 * @default undefined
 * @see yuiloader
 */

/**
 * Forces the use of the supplied locale where applicable in the library
 * @property locale
 * @type string
 * @static
 * @default undefined
 */

if (typeof YAHOO == &quot;undefined&quot; || !YAHOO) {
    /**
     * The YAHOO global namespace object.  If YAHOO is already defined, the
     * existing YAHOO object will not be overwritten so that defined
     * namespaces are preserved.
     * @class YAHOO
     * @static
     */
    var YAHOO = {};
}

/**
 * Returns the namespace specified and creates it if it doesn't exist
 * &lt;pre&gt;
 * YAHOO.namespace(&quot;property.package&quot;);
 * YAHOO.namespace(&quot;YAHOO.property.package&quot;);
 * &lt;/pre&gt;
 * Either of the above would create YAHOO.property, then
 * YAHOO.property.package
 *
 * Be careful when naming packages. Reserved words may work in some browsers
 * and not others. For instance, the following will fail in Safari:
 * &lt;pre&gt;
 * YAHOO.namespace(&quot;really.long.nested.namespace&quot;);
 * &lt;/pre&gt;
 * This fails because &quot;long&quot; is a future reserved word in ECMAScript
 *
 * For implementation code that uses YUI, do not create your components
 * in the namespaces defined by YUI (
 * &lt;code&gt;YAHOO.util&lt;/code&gt;,
 * &lt;code&gt;YAHOO.widget&lt;/code&gt;,
 * &lt;code&gt;YAHOO.lang&lt;/code&gt;,
 * &lt;code&gt;YAHOO.tool&lt;/code&gt;,
 * &lt;code&gt;YAHOO.example&lt;/code&gt;,
 * &lt;code&gt;YAHOO.env&lt;/code&gt;) -- create your own namespace (e.g., 'companyname').
 *
 * @method namespace
 * @static
 * @param  {String*} arguments 1-n namespaces to create
 * @return {Object}  A reference to the last namespace object created
 */
YAHOO.namespace = function() {
    var a=arguments, o=null, i, j, d;
    for (i=0; i&lt;a.length; i=i+1) {
        d=(&quot;&quot;+a[i]).split(&quot;.&quot;);
        o=YAHOO;

        // YAHOO is implied, so it is ignored if it is included
        for (j=(d[0] == &quot;YAHOO&quot;) ? 1 : 0; j&lt;d.length; j=j+1) {
            o[d[j]]=o[d[j]] || {};
            o=o[d[j]];
        }
    }

    return o;
};

/**
 * Uses YAHOO.widget.Logger to output a log message, if the widget is
 * available.
 * Note: LogReader adds the message, category, and source to the DOM as HTML.
 *
 * @method log
 * @static
 * @param  {HTML}  msg  The message to log.
 * @param  {HTML}  cat  The log category for the message.  Default
 *                        categories are &quot;info&quot;, &quot;warn&quot;, &quot;error&quot;, time&quot;.
 *                        Custom categories can be used as well. (opt)
 * @param  {HTML}  src  The source of the the message (opt)
 * @return {Boolean}      True if the log operation was successful.
 */
YAHOO.log = function(msg, cat, src) {
    var l=YAHOO.widget.Logger;
    if(l &amp;&amp; l.log) {
        return l.log(msg, cat, src);
    } else {
        return false;
    }
};

/**
 * Registers a module with the YAHOO object
 * @method register
 * @static
 * @param {String}   name    the name of the module (event, slider, etc)
 * @param {Function} mainClass a reference to class in the module.  This
 *                             class will be tagged with the version info
 *                             so that it will be possible to identify the
 *                             version that is in use when multiple versions
 *                             have loaded
 * @param {Object}   data      metadata object for the module.  Currently it
 *                             is expected to contain a &quot;version&quot; property
 *                             and a &quot;build&quot; property at minimum.
 */
YAHOO.register = function(name, mainClass, data) {
    var mods = YAHOO.env.modules, m, v, b, ls, i;

    if (!mods[name]) {
        mods[name] = {
            versions:[],
            builds:[]
        };
    }

    m  = mods[name];
    v  = data.version;
    b  = data.build;
    ls = YAHOO.env.listeners;

    m.name = name;
    m.version = v;
    m.build = b;
    m.versions.push(v);
    m.builds.push(b);
    m.mainClass = mainClass;

    // fire the module load listeners
    for (i=0;i&lt;ls.length;i=i+1) {
        ls[i](m);
    }
    // label the main class
    if (mainClass) {
        mainClass.VERSION = v;
        mainClass.BUILD = b;
    } else {
        YAHOO.log(&quot;mainClass is undefined for module &quot; + name, &quot;warn&quot;);
    }
};

/**
 * YAHOO.env is used to keep track of what is known about the YUI library and
 * the browsing environment
 * @class YAHOO.env
 * @static
 */
YAHOO.env = YAHOO.env || {

    /**
     * Keeps the version info for all YUI modules that have reported themselves
     * @property modules
     * @type Object[]
     */
    modules: [],

    /**
     * List of functions that should be executed every time a YUI module
     * reports itself.
     * @property listeners
     * @type Function[]
     */
    listeners: []
};

/**
 * Returns the version data for the specified module:
 *      &lt;dl&gt;
 *      &lt;dt&gt;name:&lt;/dt&gt;      &lt;dd&gt;The name of the module&lt;/dd&gt;
 *      &lt;dt&gt;version:&lt;/dt&gt;   &lt;dd&gt;The version in use&lt;/dd&gt;
 *      &lt;dt&gt;build:&lt;/dt&gt;     &lt;dd&gt;The build number in use&lt;/dd&gt;
 *      &lt;dt&gt;versions:&lt;/dt&gt;  &lt;dd&gt;All versions that were registered&lt;/dd&gt;
 *      &lt;dt&gt;builds:&lt;/dt&gt;    &lt;dd&gt;All builds that were registered.&lt;/dd&gt;
 *      &lt;dt&gt;mainClass:&lt;/dt&gt; &lt;dd&gt;An object that was was stamped with the
 *                 current version and build. If
 *                 mainClass.VERSION != version or mainClass.BUILD != build,
 *                 multiple versions of pieces of the library have been
 *                 loaded, potentially causing issues.&lt;/dd&gt;
 *       &lt;/dl&gt;
 *
 * @method getVersion
 * @static
 * @param {String}  name the name of the module (event, slider, etc)
 * @return {Object} The version info
 */
YAHOO.env.getVersion = function(name) {
    return YAHOO.env.modules[name] || null;
};

/**
 * Do not fork for a browser if it can be avoided.  Use feature detection when
 * you can.  Use the user agent as a last resort.  YAHOO.env.ua stores a version
 * number for the browser engine, 0 otherwise.  This value may or may not map
 * to the version number of the browser using the engine.  The value is
 * presented as a float so that it can easily be used for boolean evaluation
 * as well as for looking for a particular range of versions.  Because of this,
 * some of the granularity of the version info may be lost (e.g., Gecko 1.8.0.9
 * reports 1.8).
 * @class YAHOO.env.ua
 * @static
 */

/**
 * parses a user agent string (or looks for one in navigator to parse if
 * not supplied).
 * @method parseUA
 * @since 2.9.0
 * @static
 */
YAHOO.env.parseUA = function(agent) {

        var numberify = function(s) {
            var c = 0;
            return parseFloat(s.replace(/\./g, function() {
                return (c++ == 1) ? '' : '.';
            }));
        },

        nav = navigator,

        o = {

        /**
         * Internet Explorer version number or 0.  Example: 6
         * @property ie
         * @type float
         * @static
         */
        ie: 0,

        /**
         * Opera version number or 0.  Example: 9.2
         * @property opera
         * @type float
         * @static
         */
        opera: 0,

        /**
         * Gecko engine revision number.  Will evaluate to 1 if Gecko
         * is detected but the revision could not be found. Other browsers
         * will be 0.  Example: 1.8
         * &lt;pre&gt;
         * Firefox 1.0.0.4: 1.7.8   &lt;-- Reports 1.7
         * Firefox 1.5.0.9: 1.8.0.9 &lt;-- 1.8
         * Firefox 2.0.0.3: 1.8.1.3 &lt;-- 1.81
         * Firefox 3.0   &lt;-- 1.9
         * Firefox 3.5   &lt;-- 1.91
         * &lt;/pre&gt;
         * @property gecko
         * @type float
         * @static
         */
        gecko: 0,

        /**
         * AppleWebKit version.  KHTML browsers that are not WebKit browsers
         * will evaluate to 1, other browsers 0.  Example: 418.9
         * &lt;pre&gt;
         * Safari 1.3.2 (312.6): 312.8.1 &lt;-- Reports 312.8 -- currently the
         *                                   latest available for Mac OSX 10.3.
         * Safari 2.0.2:         416     &lt;-- hasOwnProperty introduced
         * Safari 2.0.4:         418     &lt;-- preventDefault fixed
         * Safari 2.0.4 (419.3): 418.9.1 &lt;-- One version of Safari may run
         *                                   different versions of webkit
         * Safari 2.0.4 (419.3): 419     &lt;-- Tiger installations that have been
         *                                   updated, but not updated
         *                                   to the latest patch.
         * Webkit 212 nightly:   522+    &lt;-- Safari 3.0 precursor (with native
         * SVG and many major issues fixed).
         * Safari 3.0.4 (523.12) 523.12  &lt;-- First Tiger release - automatic
         * update from 2.x via the 10.4.11 OS patch.
         * Webkit nightly 1/2008:525+    &lt;-- Supports DOMContentLoaded event.
         *                                   yahoo.com user agent hack removed.
         * &lt;/pre&gt;
         * http://en.wikipedia.org/wiki/Safari_version_history
         * @property webkit
         * @type float
         * @static
         */
        webkit: 0,

        /**
         * Chrome will be detected as webkit, but this property will also
         * be populated with the Chrome version number
         * @property chrome
         * @type float
         * @static
         */
        chrome: 0,

        /**
         * The mobile property will be set to a string containing any relevant
         * user agent information when a modern mobile browser is detected.
         * Currently limited to Safari on the iPhone/iPod Touch, Nokia N-series
         * devices with the WebKit-based browser, and Opera Mini.
         * @property mobile
         * @type string
         * @static
         */
        mobile: null,

        /**
         * Adobe AIR version number or 0.  Only populated if webkit is detected.
         * Example: 1.0
         * @property air
         * @type float
         */
        air: 0,
        /**
         * Detects Apple iPad's OS version
         * @property ipad
         * @type float
         * @static
         */
        ipad: 0,
        /**
         * Detects Apple iPhone's OS version
         * @property iphone
         * @type float
         * @static
         */
        iphone: 0,
        /**
         * Detects Apples iPod's OS version
         * @property ipod
         * @type float
         * @static
         */
        ipod: 0,
        /**
         * General truthy check for iPad, iPhone or iPod
         * @property ios
         * @type float
         * @static
         */
        ios: null,
        /**
         * Detects Googles Android OS version
         * @property android
         * @type float
         * @static
         */
        android: 0,
        /**
         * Detects Palms WebOS version
         * @property webos
         * @type float
         * @static
         */
        webos: 0,

        /**
         * Google Caja version number or 0.
         * @property caja
         * @type float
         */
        caja: nav &amp;&amp; nav.cajaVersion,

        /**
         * Set to true if the page appears to be in SSL
         * @property secure
         * @type boolean
         * @static
         */
        secure: false,

        /**
         * The operating system.  Currently only detecting windows or macintosh
         * @property os
         * @type string
         * @static
         */
        os: null

    },

    ua = agent || (navigator &amp;&amp; navigator.userAgent),

    loc = window &amp;&amp; window.location,

    href = loc &amp;&amp; loc.href,

    m;

    o.secure = href &amp;&amp; (href.toLowerCase().indexOf(&quot;https&quot;) === 0);

    if (ua) {

        if ((/windows|win32/i).test(ua)) {
            o.os = 'windows';
        } else if ((/macintosh/i).test(ua)) {
            o.os = 'macintosh';
        } else if ((/rhino/i).test(ua)) {
            o.os = 'rhino';
        }

        // Modern KHTML browsers should qualify as Safari X-Grade
        if ((/KHTML/).test(ua)) {
            o.webkit = 1;
        }
        // Modern WebKit browsers are at least X-Grade
        m = ua.match(/AppleWebKit\/([^\s]*)/);
        if (m &amp;&amp; m[1]) {
            o.webkit = numberify(m[1]);

            // Mobile browser check
            if (/ Mobile\//.test(ua)) {
                o.mobile = 'Apple'; // iPhone or iPod Touch

                m = ua.match(/OS ([^\s]*)/);
                if (m &amp;&amp; m[1]) {
                    m = numberify(m[1].replace('_', '.'));
                }
                o.ios = m;
                o.ipad = o.ipod = o.iphone = 0;

                m = ua.match(/iPad|iPod|iPhone/);
                if (m &amp;&amp; m[0]) {
                    o[m[0].toLowerCase()] = o.ios;
                }
            } else {
                m = ua.match(/NokiaN[^\/]*|Android \d\.\d|webOS\/\d\.\d/);
                if (m) {
                    // Nokia N-series, Android, webOS, ex: NokiaN95
                    o.mobile = m[0];
                }
                if (/webOS/.test(ua)) {
                    o.mobile = 'WebOS';
                    m = ua.match(/webOS\/([^\s]*);/);
                    if (m &amp;&amp; m[1]) {
                        o.webos = numberify(m[1]);
                    }
                }
                if (/ Android/.test(ua)) {
                    o.mobile = 'Android';
                    m = ua.match(/Android ([^\s]*);/);
                    if (m &amp;&amp; m[1]) {
                        o.android = numberify(m[1]);
                    }

                }
            }

            m = ua.match(/Chrome\/([^\s]*)/);
            if (m &amp;&amp; m[1]) {
                o.chrome = numberify(m[1]); // Chrome
            } else {
                m = ua.match(/AdobeAIR\/([^\s]*)/);
                if (m) {
                    o.air = m[0]; // Adobe AIR 1.0 or better
                }
            }
        }

        if (!o.webkit) { // not webkit
// @todo check Opera/8.01 (J2ME/MIDP; Opera Mini/2.0.4509/1316; fi; U; ssr)
            m = ua.match(/Opera[\s\/]([^\s]*)/);
            if (m &amp;&amp; m[1]) {
                o.opera = numberify(m[1]);
                m = ua.match(/Version\/([^\s]*)/);
                if (m &amp;&amp; m[1]) {
                    o.opera = numberify(m[1]); // opera 10+
                }
                m = ua.match(/Opera Mini[^;]*/);
                if (m) {
                    o.mobile = m[0]; // ex: Opera Mini/2.0.4509/1316
                }
            } else { // not opera or webkit
                m = ua.match(/MSIE\s([^;]*)/);
                if (m &amp;&amp; m[1]) {
                    o.ie = numberify(m[1]);
                } else { // not opera, webkit, or ie
                    m = ua.match(/Gecko\/([^\s]*)/);
                    if (m) {
                        o.gecko = 1; // Gecko detected, look for revision
                        m = ua.match(/rv:([^\s\)]*)/);
                        if (m &amp;&amp; m[1]) {
                            o.gecko = numberify(m[1]);
                        }
                    }
                }
            }
        }
    }

    return o;
};

YAHOO.env.ua = YAHOO.env.parseUA();

/*
 * Initializes the global by creating the default namespaces and applying
 * any new configuration information that is detected.  This is the setup
 * for env.
 * @method init
 * @static
 * @private
 */
(function() {
    YAHOO.namespace(&quot;util&quot;, &quot;widget&quot;, &quot;example&quot;);
    /*global YAHOO_config*/
    if (&quot;undefined&quot; !== typeof YAHOO_config) {
        var l=YAHOO_config.listener, ls=YAHOO.env.listeners,unique=true, i;
        if (l) {
            // if YAHOO is loaded multiple times we need to check to see if
            // this is a new config object.  If it is, add the new component
            // load listener to the stack
            for (i=0; i&lt;ls.length; i++) {
                if (ls[i] == l) {
                    unique = false;
                    break;
                }
            }

            if (unique) {
                ls.push(l);
            }
        }
    }
})();
/**
 * Provides the language utilites and extensions used by the library
 * @class YAHOO.lang
 */
YAHOO.lang = YAHOO.lang || {};

(function() {


var L = YAHOO.lang,

    OP = Object.prototype,
    ARRAY_TOSTRING = '[object Array]',
    FUNCTION_TOSTRING = '[object Function]',
    OBJECT_TOSTRING = '[object Object]',
    NOTHING = [],

    HTML_CHARS = {
        '&amp;': '&amp;amp;',
        '&lt;': '&amp;lt;',
        '&gt;': '&amp;gt;',
        '&quot;': '&amp;quot;',
        &quot;'&quot;: '&amp;#x27;',
        '/': '&amp;#x2F;',
        '`': '&amp;#x60;'
    },

    // ADD = [&quot;toString&quot;, &quot;valueOf&quot;, &quot;hasOwnProperty&quot;],
    ADD = [&quot;toString&quot;, &quot;valueOf&quot;],

    OB = {

    /**
     * Determines wheather or not the provided object is an array.
     * @method isArray
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isArray: function(o) {
        return OP.toString.apply(o) === ARRAY_TOSTRING;
    },

    /**
     * Determines whether or not the provided object is a boolean
     * @method isBoolean
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isBoolean: function(o) {
        return typeof o === 'boolean';
    },

    /**
     * Determines whether or not the provided object is a function.
     * Note: Internet Explorer thinks certain functions are objects:
     *
     * var obj = document.createElement(&quot;object&quot;);
     * YAHOO.lang.isFunction(obj.getAttribute) // reports false in IE
     *
     * var input = document.createElement(&quot;input&quot;); // append to body
     * YAHOO.lang.isFunction(input.focus) // reports false in IE
     *
     * You will have to implement additional tests if these functions
     * matter to you.
     *
     * @method isFunction
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isFunction: function(o) {
        return (typeof o === 'function') || OP.toString.apply(o) === FUNCTION_TOSTRING;
    },

    /**
     * Determines whether or not the provided object is null
     * @method isNull
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isNull: function(o) {
        return o === null;
    },

    /**
     * Determines whether or not the provided object is a legal number
     * @method isNumber
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isNumber: function(o) {
        return typeof o === 'number' &amp;&amp; isFinite(o);
    },

    /**
     * Determines whether or not the provided object is of type object
     * or function
     * @method isObject
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isObject: function(o) {
return (o &amp;&amp; (typeof o === 'object' || L.isFunction(o))) || false;
    },

    /**
     * Determines whether or not the provided object is a string
     * @method isString
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isString: function(o) {
        return typeof o === 'string';
    },

    /**
     * Determines whether or not the provided object is undefined
     * @method isUndefined
     * @param {any} o The object being testing
     * @return {boolean} the result
     */
    isUndefined: function(o) {
        return typeof o === 'undefined';
    },


    /**
     * IE will not enumerate native functions in a derived object even if the
     * function was overridden.  This is a workaround for specific functions
     * we care about on the Object prototype.
     * @property _IEEnumFix
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @static
     * @private
     */
    _IEEnumFix: (YAHOO.env.ua.ie) ? function(r, s) {
            var i, fname, f;
            for (i=0;i&lt;ADD.length;i=i+1) {

                fname = ADD[i];
                f = s[fname];

                if (L.isFunction(f) &amp;&amp; f!=OP[fname]) {
                    r[fname]=f;
                }
            }
    } : function(){},

    /**
     * &lt;p&gt;
     * Returns a copy of the specified string with special HTML characters
     * escaped. The following characters will be converted to their
     * corresponding character entities:
     * &lt;code&gt;&amp;amp; &amp;lt; &amp;gt; &amp;quot; &amp;#x27; &amp;#x2F; &amp;#x60;&lt;/code&gt;
     * &lt;/p&gt;
     *
     * &lt;p&gt;
     * This implementation is based on the
     * &lt;a href=&quot;http://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet&quot;&gt;OWASP
     * HTML escaping recommendations&lt;/a&gt;. In addition to the characters
     * in the OWASP recommendation, we also escape the &lt;code&gt;&amp;#x60;&lt;/code&gt;
     * character, since IE interprets it as an attribute delimiter when used in
     * innerHTML.
     * &lt;/p&gt;
     *
     * @method escapeHTML
     * @param {String} html String to escape.
     * @return {String} Escaped string.
     * @static
     * @since 2.9.0
     */
    escapeHTML: function (html) {
        return html.replace(/[&amp;&lt;&gt;&quot;'\/`]/g, function (match) {
            return HTML_CHARS[match];
        });
    },

    /**
     * Utility to set up the prototype, constructor and superclass properties to
     * support an inheritance strategy that can chain constructors and methods.
     * Static members will not be inherited.
     *
     * @method extend
     * @static
     * @param {Function} subc   the object to modify
     * @param {Function} superc the object to inherit
     * @param {Object} overrides  additional properties/methods to add to the
     *                              subclass prototype.  These will override the
     *                              matching items obtained from the superclass
     *                              if present.
     */
    extend: function(subc, superc, overrides) {
        if (!superc||!subc) {
            throw new Error(&quot;extend failed, please check that &quot; +
                            &quot;all dependencies are included.&quot;);
        }
        var F = function() {}, i;
        F.prototype=superc.prototype;
        subc.prototype=new F();
        subc.prototype.constructor=subc;
        subc.superclass=superc.prototype;
        if (superc.prototype.constructor == OP.constructor) {
            superc.prototype.constructor=superc;
        }

        if (overrides) {
            for (i in overrides) {
                if (L.hasOwnProperty(overrides, i)) {
                    subc.prototype[i]=overrides[i];
                }
            }

            L._IEEnumFix(subc.prototype, overrides);
        }
    },

    /**
     * Applies all properties in the supplier to the receiver if the
     * receiver does not have these properties yet.  Optionally, one or
     * more methods/properties can be specified (as additional
     * parameters).  This option will overwrite the property if receiver
     * has it already.  If true is passed as the third parameter, all
     * properties will be applied and _will_ overwrite properties in
     * the receiver.
     *
     * @method augmentObject
     * @static
     * @since 2.3.0
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @param {String*|boolean}  arguments zero or more properties methods
     *        to augment the receiver with.  If none specified, everything
     *        in the supplier will be used unless it would
     *        overwrite an existing property in the receiver. If true
     *        is specified as the third parameter, all properties will
     *        be applied and will overwrite an existing property in
     *        the receiver
     */
    augmentObject: function(r, s) {
        if (!s||!r) {
            throw new Error(&quot;Absorb failed, verify dependencies.&quot;);
        }
        var a=arguments, i, p, overrideList=a[2];
        if (overrideList &amp;&amp; overrideList!==true) { // only absorb the specified properties
            for (i=2; i&lt;a.length; i=i+1) {
                r[a[i]] = s[a[i]];
            }
        } else { // take everything, overwriting only if the third parameter is true
            for (p in s) {
                if (overrideList || !(p in r)) {
                    r[p] = s[p];
                }
            }

            L._IEEnumFix(r, s);
        }

        return r;
    },

    /**
     * Same as YAHOO.lang.augmentObject, except it only applies prototype properties
     * @see YAHOO.lang.augmentObject
     * @method augmentProto
     * @static
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @param {String*|boolean}  arguments zero or more properties methods
     *        to augment the receiver with.  If none specified, everything
     *        in the supplier will be used unless it would overwrite an existing
     *        property in the receiver.  if true is specified as the third
     *        parameter, all properties will be applied and will overwrite an
     *        existing property in the receiver
     */
    augmentProto: function(r, s) {
        if (!s||!r) {
            throw new Error(&quot;Augment failed, verify dependencies.&quot;);
        }
        //var a=[].concat(arguments);
        var a=[r.prototype,s.prototype], i;
        for (i=2;i&lt;arguments.length;i=i+1) {
            a.push(arguments[i]);
        }
        L.augmentObject.apply(this, a);

        return r;
    },


    /**
     * Returns a simple string representation of the object or array.
     * Other types of objects will be returned unprocessed.  Arrays
     * are expected to be indexed.  Use object notation for
     * associative arrays.
     * @method dump
     * @since 2.3.0
     * @param o {Object} The object to dump
     * @param d {int} How deep to recurse child objects, default 3
     * @return {String} the dump result
     */
    dump: function(o, d) {
        var i,len,s=[],OBJ=&quot;{...}&quot;,FUN=&quot;f(){...}&quot;,
            COMMA=', ', ARROW=' =&gt; ';

        // Cast non-objects to string
        // Skip dates because the std toString is what we want
        // Skip HTMLElement-like objects because trying to dump
        // an element will cause an unhandled exception in FF 2.x
        if (!L.isObject(o)) {
            return o + &quot;&quot;;
        } else if (o instanceof Date || (&quot;nodeType&quot; in o &amp;&amp; &quot;tagName&quot; in o)) {
            return o;
        } else if  (L.isFunction(o)) {
            return FUN;
        }

        // dig into child objects the depth specifed. Default 3
        d = (L.isNumber(d)) ? d : 3;

        // arrays [1, 2, 3]
        if (L.isArray(o)) {
            s.push(&quot;[&quot;);
            for (i=0,len=o.length;i&lt;len;i=i+1) {
                if (L.isObject(o[i])) {
                    s.push((d &gt; 0) ? L.dump(o[i], d-1) : OBJ);
                } else {
                    s.push(o[i]);
                }
                s.push(COMMA);
            }
            if (s.length &gt; 1) {
                s.pop();
            }
            s.push(&quot;]&quot;);
        // objects {k1 =&gt; v1, k2 =&gt; v2}
        } else {
            s.push(&quot;{&quot;);
            for (i in o) {
                if (L.hasOwnProperty(o, i)) {
                    s.push(i + ARROW);
                    if (L.isObject(o[i])) {
                        s.push((d &gt; 0) ? L.dump(o[i], d-1) : OBJ);
                    } else {
                        s.push(o[i]);
                    }
                    s.push(COMMA);
                }
            }
            if (s.length &gt; 1) {
                s.pop();
            }
            s.push(&quot;}&quot;);
        }

        return s.join(&quot;&quot;);
    },

    /**
     * Does variable substitution on a string. It scans through the string
     * looking for expressions enclosed in { } braces. If an expression
     * is found, it is used a key on the object.  If there is a space in
     * the key, the first word is used for the key and the rest is provided
     * to an optional function to be used to programatically determine the
     * value (the extra information might be used for this decision). If
     * the value for the key in the object, or what is returned from the
     * function has a string value, number value, or object value, it is
     * substituted for the bracket expression and it repeats.  If this
     * value is an object, it uses the Object's toString() if this has
     * been overridden, otherwise it does a shallow dump of the key/value
     * pairs.
     *
     * By specifying the recurse option, the string is rescanned after
     * every replacement, allowing for nested template substitutions.
     * The side effect of this option is that curly braces in the
     * replacement content must be encoded.
     *
     * @method substitute
     * @since 2.3.0
     * @param s {String} The string that will be modified.
     * @param o {Object} An object containing the replacement values
     * @param f {Function} An optional function that can be used to
     *                     process each match.  It receives the key,
     *                     value, and any extra metadata included with
     *                     the key inside of the braces.
     * @param recurse {boolean} default true - if not false, the replaced
     * string will be rescanned so that nested substitutions are possible.
     * @return {String} the substituted string
     */
    substitute: function (s, o, f, recurse) {
        var i, j, k, key, v, meta, saved=[], token, lidx=s.length,
            DUMP='dump', SPACE=' ', LBRACE='{', RBRACE='}',
            dump, objstr;

        for (;;) {
            i = s.lastIndexOf(LBRACE, lidx);
            if (i &lt; 0) {
                break;
            }
            j = s.indexOf(RBRACE, i);
            if (i + 1 &gt; j) {
                break;
            }

            //Extract key and meta info
            token = s.substring(i + 1, j);
            key = token;
            meta = null;
            k = key.indexOf(SPACE);
            if (k &gt; -1) {
                meta = key.substring(k + 1);
                key = key.substring(0, k);
            }

            // lookup the value
            v = o[key];

            // if a substitution function was provided, execute it
            if (f) {
                v = f(key, v, meta);
            }

            if (L.isObject(v)) {
                if (L.isArray(v)) {
                    v = L.dump(v, parseInt(meta, 10));
                } else {
                    meta = meta || &quot;&quot;;

                    // look for the keyword 'dump', if found force obj dump
                    dump = meta.indexOf(DUMP);
                    if (dump &gt; -1) {
                        meta = meta.substring(4);
                    }

                    objstr = v.toString();

                    // use the toString if it is not the Object toString
                    // and the 'dump' meta info was not found
                    if (objstr === OBJECT_TOSTRING || dump &gt; -1) {
                        v = L.dump(v, parseInt(meta, 10));
                    } else {
                        v = objstr;
                    }
                }
            } else if (!L.isString(v) &amp;&amp; !L.isNumber(v)) {
                // This {block} has no replace string. Save it for later.
                v = &quot;~-&quot; + saved.length + &quot;-~&quot;;
                saved[saved.length] = token;

                // break;
            }

            s = s.substring(0, i) + v + s.substring(j + 1);

            if (recurse === false) {
                lidx = i-1;
            }

        }

        // restore saved {block}s
        for (i=saved.length-1; i&gt;=0; i=i-1) {
            s = s.replace(new RegExp(&quot;~-&quot; + i + &quot;-~&quot;), &quot;{&quot;  + saved[i] + &quot;}&quot;, &quot;g&quot;);
        }

        return s;
    },


    /**
     * Returns a string without any leading or trailing whitespace.  If
     * the input is not a string, the input will be returned untouched.
     * @method trim
     * @since 2.3.0
     * @param s {string} the string to trim
     * @return {string} the trimmed string
     */
    trim: function(s){
        try {
            return s.replace(/^\s+|\s+$/g, &quot;&quot;);
        } catch(e) {
            return s;
        }
    },

    /**
     * Returns a new object containing all of the properties of
     * all the supplied objects.  The properties from later objects
     * will overwrite those in earlier objects.
     * @method merge
     * @since 2.3.0
     * @param arguments {Object*} the objects to merge
     * @return the new merged object
     */
    merge: function() {
        var o={}, a=arguments, l=a.length, i;
        for (i=0; i&lt;l; i=i+1) {
            L.augmentObject(o, a[i], true);
        }
        return o;
    },

    /**
     * Executes the supplied function in the context of the supplied
     * object 'when' milliseconds later.  Executes the function a
     * single time unless periodic is set to true.
     * @method later
     * @since 2.4.0
     * @param when {int} the number of milliseconds to wait until the fn
     * is executed
     * @param o the context object
     * @param fn {Function|String} the function to execute or the name of
     * the method in the 'o' object to execute
     * @param data [Array] data that is provided to the function.  This accepts
     * either a single item or an array.  If an array is provided, the
     * function is executed with one parameter for each array item.  If
     * you need to pass a single array parameter, it needs to be wrapped in
     * an array [myarray]
     * @param periodic {boolean} if true, executes continuously at supplied
     * interval until canceled
     * @return a timer object. Call the cancel() method on this object to
     * stop the timer.
     */
    later: function(when, o, fn, data, periodic) {
        when = when || 0;
        o = o || {};
        var m=fn, d=data, f, r;

        if (L.isString(fn)) {
            m = o[fn];
        }

        if (!m) {
            throw new TypeError(&quot;method undefined&quot;);
        }

        if (!L.isUndefined(data) &amp;&amp; !L.isArray(d)) {
            d = [data];
        }

        f = function() {
            m.apply(o, d || NOTHING);
        };

        r = (periodic) ? setInterval(f, when) : setTimeout(f, when);

        return {
            interval: periodic,
            cancel: function() {
                if (this.interval) {
                    clearInterval(r);
                } else {
                    clearTimeout(r);
                }
            }
        };
    },

    /**
     * A convenience method for detecting a legitimate non-null value.
     * Returns false for null/undefined/NaN, true for other values,
     * including 0/false/''
     * @method isValue
     * @since 2.3.0
     * @param o {any} the item to test
     * @return {boolean} true if it is not null/undefined/NaN || false
     */
    isValue: function(o) {
        // return (o || o === false || o === 0 || o === ''); // Infinity fails
return (L.isObject(o) || L.isString(o) || L.isNumber(o) || L.isBoolean(o));
    }

};

/**
 * Determines whether or not the property was added
 * to the object instance.  Returns false if the property is not present
 * in the object, or was inherited from the prototype.
 * This abstraction is provided to enable hasOwnProperty for Safari 1.3.x.
 * There is a discrepancy between YAHOO.lang.hasOwnProperty and
 * Object.prototype.hasOwnProperty when the property is a primitive added to
 * both the instance AND prototype with the same value:
 * &lt;pre&gt;
 * var A = function() {};
 * A.prototype.foo = 'foo';
 * var a = new A();
 * a.foo = 'foo';
 * alert(a.hasOwnProperty('foo')); // true
 * alert(YAHOO.lang.hasOwnProperty(a, 'foo')); // false when using fallback
 * &lt;/pre&gt;
 * @method hasOwnProperty
 * @param {any} o The object being testing
 * @param prop {string} the name of the property to test
 * @return {boolean} the result
 */
L.hasOwnProperty = (OP.hasOwnProperty) ?
    function(o, prop) {
        return o &amp;&amp; o.hasOwnProperty &amp;&amp; o.hasOwnProperty(prop);
    } : function(o, prop) {
        return !L.isUndefined(o[prop]) &amp;&amp;
                o.constructor.prototype[prop] !== o[prop];
    };

// new lang wins
OB.augmentObject(L, OB, true);

/*
 * An alias for &lt;a href=&quot;YAHOO.lang.html&quot;&gt;YAHOO.lang&lt;/a&gt;
 * @class YAHOO.util.Lang
 */
YAHOO.util.Lang = L;

/**
 * Same as YAHOO.lang.augmentObject, except it only applies prototype
 * properties.  This is an alias for augmentProto.
 * @see YAHOO.lang.augmentObject
 * @method augment
 * @static
 * @param {Function} r  the object to receive the augmentation
 * @param {Function} s  the object that supplies the properties to augment
 * @param {String*|boolean}  arguments zero or more properties methods to
 *        augment the receiver with.  If none specified, everything
 *        in the supplier will be used unless it would
 *        overwrite an existing property in the receiver.  if true
 *        is specified as the third parameter, all properties will
 *        be applied and will overwrite an existing property in
 *        the receiver
 */
L.augment = L.augmentProto;

/**
 * An alias for &lt;a href=&quot;YAHOO.lang.html#augment&quot;&gt;YAHOO.lang.augment&lt;/a&gt;
 * @for YAHOO
 * @method augment
 * @static
 * @param {Function} r  the object to receive the augmentation
 * @param {Function} s  the object that supplies the properties to augment
 * @param {String*}  arguments zero or more properties methods to
 *        augment the receiver with.  If none specified, everything
 *        in the supplier will be used unless it would
 *        overwrite an existing property in the receiver
 */
YAHOO.augment = L.augmentProto;

/**
 * An alias for &lt;a href=&quot;YAHOO.lang.html#extend&quot;&gt;YAHOO.lang.extend&lt;/a&gt;
 * @method extend
 * @static
 * @param {Function} subc   the object to modify
 * @param {Function} superc the object to inherit
 * @param {Object} overrides  additional properties/methods to add to the
 *        subclass prototype.  These will override the
 *        matching items obtained from the superclass if present.
 */
YAHOO.extend = L.extend;

})();
YAHOO.register(&quot;yahoo&quot;, YAHOO, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/**
 * Provides a mechanism to fetch remote resources and
 * insert them into a document
 * This utility can fetch JavaScript and CSS files, inserting script
 * tags for script and link tags for CSS.  Note, this
 * is done via the normal browser mechanisms for inserting
 * these resources and making the content available to
 * code that would access it.  Be careful when retreiving
 * remote resources.  Only use this utility to fetch
 * files from sites you trust.
 *
 * @module get
 * @requires yahoo
 */

/**
 * Fetches and inserts one or more script or link nodes into the document.
 * This utility can fetch JavaScript and CSS files, inserting script
 * tags for script and link tags for CSS.  Note, this
 * is done via the normal browser mechanisms for inserting
 * these resources and making the content available to
 * code that would access it.  Be careful when retreiving
 * remote resources.  Only use this utility to fetch
 * files from sites you trust.
 *
 * @namespace YAHOO.util
 * @class YAHOO.util.Get
 */
YAHOO.util.Get = function() {

    /**
     * hash of queues to manage multiple requests
     * @property queues
     * @private
     */
    var queues={},

    /**
     * queue index used to generate transaction ids
     * @property qidx
     * @type int
     * @private
     */
        qidx=0,

    /**
     * node index used to generate unique node ids
     * @property nidx
     * @type int
     * @private
     */
        nidx=0,

    /**
     * interal property used to prevent multiple simultaneous purge
     * processes
     * @property purging
     * @type boolean
     * @private
     */
        _purging=false,

        ua=YAHOO.env.ua,

        lang=YAHOO.lang,

    _fail,
    _purge,
    _track,

    /**
     * Generates an HTML element, this is not appended to a document
     * @method _node
     * @param type {string} the type of element
     * @param attr {string} the attributes
     * @param win {Window} optional window to create the element in
     * @return {HTMLElement} the generated node
     * @private
     */
    _node = function(type, attr, win) {
        var w = win || window, d=w.document, n=d.createElement(type), i;

        for (i in attr) {
            if (attr.hasOwnProperty(i)) {
                n.setAttribute(i, attr[i]);
            }
        }

        return n;
    },

    /**
     * Generates a link node
     * @method _linkNode
     * @param url {string} the url for the css file
     * @param win {Window} optional window to create the node in
     * @return {HTMLElement} the generated node
     * @private
     */
    _linkNode = function(url, win, attributes) {

        var o = {
            id:   &quot;yui__dyn_&quot; + (nidx++),
            type: &quot;text/css&quot;,
            rel:  &quot;stylesheet&quot;,
            href: url
        };

        if (attributes) {
            lang.augmentObject(o, attributes);
        }

        return _node(&quot;link&quot;, o, win);
    },

    /**
     * Generates a script node
     * @method _scriptNode
     * @param url {string} the url for the script file
     * @param win {Window} optional window to create the node in
     * @return {HTMLElement} the generated node
     * @private
     */
    _scriptNode = function(url, win, attributes) {
        var o = {
            id:   &quot;yui__dyn_&quot; + (nidx++),
            type: &quot;text/javascript&quot;,
            src:  url
        };

        if (attributes) {
            lang.augmentObject(o, attributes);
        }

        return _node(&quot;script&quot;, o, win);
    },

    /**
     * Returns the data payload for callback functions
     * @method _returnData
     * @private
     */
    _returnData = function(q, msg) {
        return {
                tId: q.tId,
                win: q.win,
                data: q.data,
                nodes: q.nodes,
                msg: msg,
                purge: function() {
                    _purge(this.tId);
                }
            };
    },

    _get = function(nId, tId) {
        var q = queues[tId],
            n = (lang.isString(nId)) ? q.win.document.getElementById(nId) : nId;
        if (!n) {
            _fail(tId, &quot;target node not found: &quot; + nId);
        }

        return n;
    },


    /**
     * The request is complete, so executing the requester's callback
     * @method _finish
     * @param id {string} the id of the request
     * @private
     */
    _finish = function(id) {
        YAHOO.log(&quot;Finishing transaction &quot; + id);
        var q = queues[id], msg, context;
        q.finished = true;

        if (q.aborted) {
            msg = &quot;transaction &quot; + id + &quot; was aborted&quot;;
            _fail(id, msg);
            return;
        }

        // execute success callback
        if (q.onSuccess) {
            context = q.scope || q.win;
            q.onSuccess.call(context, _returnData(q));
        }
    },

    /**
     * Timeout detected
     * @method _timeout
     * @param id {string} the id of the request
     * @private
     */
    _timeout = function(id) {
        YAHOO.log(&quot;Timeout &quot; + id, &quot;info&quot;, &quot;get&quot;);
        var q = queues[id], context;
        if (q.onTimeout) {
            context = q.scope || q;
            q.onTimeout.call(context, _returnData(q));
        }
    },

    /**
     * Loads the next item for a given request
     * @method _next
     * @param id {string} the id of the request
     * @param loaded {string} the url that was just loaded, if any
     * @private
     */
    _next = function(id, loaded) {

        YAHOO.log(&quot;_next: &quot; + id + &quot;, loaded: &quot; + loaded, &quot;info&quot;, &quot;Get&quot;);

        var q = queues[id], w=q.win, d=w.document, h=d.getElementsByTagName(&quot;head&quot;)[0],
            n, msg, url, s, extra;

        if (q.timer) {
            // Y.log('cancel timer');
            q.timer.cancel();
        }

        if (q.aborted) {
            msg = &quot;transaction &quot; + id + &quot; was aborted&quot;;
            _fail(id, msg);
            return;
        }

        if (loaded) {
            q.url.shift();
            if (q.varName) {
                q.varName.shift();
            }
        } else {
            // This is the first pass: make sure the url is an array
            q.url = (lang.isString(q.url)) ? [q.url] : q.url;
            if (q.varName) {
                q.varName = (lang.isString(q.varName)) ? [q.varName] : q.varName;
            }
        }


        if (q.url.length === 0) {
            // Safari 2.x workaround - There is no way to know when
            // a script is ready in versions of Safari prior to 3.x.
            // Adding an extra node reduces the problem, but doesn't
            // eliminate it completely because the browser executes
            // them asynchronously.
            if (q.type === &quot;script&quot; &amp;&amp; ua.webkit &amp;&amp; ua.webkit &lt; 420 &amp;&amp;
                    !q.finalpass &amp;&amp; !q.varName) {
                // Add another script node.  This does not guarantee that the
                // scripts will execute in order, but it does appear to fix the
                // problem on fast connections more effectively than using an
                // arbitrary timeout.  It is possible that the browser does
                // block subsequent script execution in this case for a limited
                // time.
                extra = _scriptNode(null, q.win, q.attributes);
                extra.innerHTML='YAHOO.util.Get._finalize(&quot;' + id + '&quot;);';
                q.nodes.push(extra); h.appendChild(extra);

            } else {
                _finish(id);
            }

            return;
        }


        url = q.url[0];

        // if the url is undefined, this is probably a trailing comma problem in IE
        if (!url) {
            q.url.shift();
            YAHOO.log('skipping empty url');
            return _next(id);
        }

        YAHOO.log(&quot;attempting to load &quot; + url, &quot;info&quot;, &quot;Get&quot;);

        if (q.timeout) {
            // Y.log('create timer');
            q.timer = lang.later(q.timeout, q, _timeout, id);
        }

        if (q.type === &quot;script&quot;) {
            n = _scriptNode(url, w, q.attributes);
        } else {
            n = _linkNode(url, w, q.attributes);
        }

        // track this node's load progress
        _track(q.type, n, id, url, w, q.url.length);

        // add the node to the queue so we can return it to the user supplied callback
        q.nodes.push(n);

        // add it to the head or insert it before 'insertBefore'
        if (q.insertBefore) {
            s = _get(q.insertBefore, id);
            if (s) {
                s.parentNode.insertBefore(n, s);
            }
        } else {
            h.appendChild(n);
        }

        YAHOO.log(&quot;Appending node: &quot; + url, &quot;info&quot;, &quot;Get&quot;);

        // FireFox does not support the onload event for link nodes, so there is
        // no way to make the css requests synchronous. This means that the css
        // rules in multiple files could be applied out of order in this browser
        // if a later request returns before an earlier one.  Safari too.
        if ((ua.webkit || ua.gecko) &amp;&amp; q.type === &quot;css&quot;) {
            _next(id, url);
        }
    },

    /**
     * Removes processed queues and corresponding nodes
     * @method _autoPurge
     * @private
     */
    _autoPurge = function() {

        if (_purging) {
            return;
        }

        _purging = true;

        var i, q;

        for (i in queues) {
            if (queues.hasOwnProperty(i)) {
                q = queues[i];
                if (q.autopurge &amp;&amp; q.finished) {
                    _purge(q.tId);
                    delete queues[i];
                }
            }
        }

        _purging = false;
    },

    /**
     * Saves the state for the request and begins loading
     * the requested urls
     * @method queue
     * @param type {string} the type of node to insert
     * @param url {string} the url to load
     * @param opts the hash of options for this request
     * @private
     */
    _queue = function(type, url, opts) {

        var id = &quot;q&quot; + (qidx++), q;
        opts = opts || {};

        if (qidx % YAHOO.util.Get.PURGE_THRESH === 0) {
            _autoPurge();
        }

        queues[id] = lang.merge(opts, {
            tId: id,
            type: type,
            url: url,
            finished: false,
            aborted: false,
            nodes: []
        });

        q = queues[id];
        q.win = q.win || window;
        q.scope = q.scope || q.win;
        q.autopurge = (&quot;autopurge&quot; in q) ? q.autopurge :
                      (type === &quot;script&quot;) ? true : false;

        q.attributes = q.attributes || {};
        q.attributes.charset = opts.charset || q.attributes.charset || 'utf-8';

        lang.later(0, q, _next, id);

        return {
            tId: id
        };
    };

    /**
     * Detects when a node has been loaded.  In the case of
     * script nodes, this does not guarantee that contained
     * script is ready to use.
     * @method _track
     * @param type {string} the type of node to track
     * @param n {HTMLElement} the node to track
     * @param id {string} the id of the request
     * @param url {string} the url that is being loaded
     * @param win {Window} the targeted window
     * @param qlength the number of remaining items in the queue,
     * including this one
     * @param trackfn {Function} function to execute when finished
     * the default is _next
     * @private
     */
    _track = function(type, n, id, url, win, qlength, trackfn) {
        var f = trackfn || _next, rs, q, a, freq, w, l, i, msg;

        // IE supports the readystatechange event for script and css nodes
        if (ua.ie) {
            n.onreadystatechange = function() {
                rs = this.readyState;
                if (&quot;loaded&quot; === rs || &quot;complete&quot; === rs) {
                    YAHOO.log(id + &quot; onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                    n.onreadystatechange = null;
                    f(id, url);
                }
            };

        // webkit prior to 3.x is problemmatic
        } else if (ua.webkit) {

            if (type === &quot;script&quot;) {

                // Safari 3.x supports the load event for script nodes (DOM2)
                if (ua.webkit &gt;= 420) {

                    n.addEventListener(&quot;load&quot;, function() {
                        YAHOO.log(id + &quot; DOM2 onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                        f(id, url);
                    });

                // Nothing can be done with Safari &lt; 3.x except to pause and hope
                // for the best, particularly after last script is inserted. The
                // scripts will always execute in the order they arrive, not
                // necessarily the order in which they were inserted.  To support
                // script nodes with complete reliability in these browsers, script
                // nodes either need to invoke a function in the window once they
                // are loaded or the implementer needs to provide a well-known
                // property that the utility can poll for.
                } else {
                    // Poll for the existence of the named variable, if it
                    // was supplied.
                    q = queues[id];
                    if (q.varName) {
                        freq = YAHOO.util.Get.POLL_FREQ;
                        YAHOO.log(&quot;Polling for &quot; + q.varName[0]);
                        q.maxattempts = YAHOO.util.Get.TIMEOUT/freq;
                        q.attempts = 0;
                        q._cache = q.varName[0].split(&quot;.&quot;);
                        q.timer = lang.later(freq, q, function(o) {
                            a = this._cache;
                            l = a.length;
                            w = this.win;
                            for (i=0; i&lt;l; i=i+1) {
                                w = w[a[i]];
                                if (!w) {
                                    // if we have exausted our attempts, give up
                                    this.attempts++;
                                    if (this.attempts++ &gt; this.maxattempts) {
                                        msg = &quot;Over retry limit, giving up&quot;;
                                        q.timer.cancel();
                                        _fail(id, msg);
                                    } else {
                                        YAHOO.log(a[i] + &quot; failed, retrying&quot;);
                                    }
                                    return;
                                }
                            }

                            YAHOO.log(&quot;Safari poll complete&quot;);

                            q.timer.cancel();
                            f(id, url);

                        }, null, true);
                    } else {
                        lang.later(YAHOO.util.Get.POLL_FREQ, null, f, [id, url]);
                    }
                }
            }

        // FireFox and Opera support onload (but not DOM2 in FF) handlers for
        // script nodes.  Opera, but not FF, supports the onload event for link
        // nodes.
        } else {
            n.onload = function() {
                YAHOO.log(id + &quot; onload &quot; + url, &quot;info&quot;, &quot;Get&quot;);
                f(id, url);
            };
        }
    };

    /*
     * The request failed, execute fail handler with whatever
     * was accomplished.  There isn't a failure case at the
     * moment unless you count aborted transactions
     * @method _fail
     * @param id {string} the id of the request
     * @private
     */
    _fail = function(id, msg) {
        YAHOO.log(&quot;get failure: &quot; + msg, &quot;warn&quot;, &quot;Get&quot;);
        var q = queues[id], context;
        // execute failure callback
        if (q.onFailure) {
            context = q.scope || q.win;
            q.onFailure.call(context, _returnData(q, msg));
        }
    };

    /**
     * Removes the nodes for the specified queue
     * @method _purge
     * @private
     */
    _purge = function(tId) {
        if (queues[tId]) {

            var q     = queues[tId],
                nodes = q.nodes,
                l     = nodes.length,
                d     = q.win.document,
                h     = d.getElementsByTagName(&quot;head&quot;)[0],
                sib, i, node, attr;

            if (q.insertBefore) {
                sib = _get(q.insertBefore, tId);
                if (sib) {
                    h = sib.parentNode;
                }
            }

            for (i=0; i&lt;l; i=i+1) {
                node = nodes[i];
                if (node.clearAttributes) {
                    node.clearAttributes();
                } else {
                    for (attr in node) {
                        if (node.hasOwnProperty(attr)) {
                            delete node[attr];
                        }
                    }
                }

                h.removeChild(node);
            }

            q.nodes = [];
        }
    };


    return {

        /**
         * The default poll freqency in ms, when needed
         * @property POLL_FREQ
         * @static
         * @type int
         * @default 10
         */
        POLL_FREQ: 10,

        /**
         * The number of request required before an automatic purge.
         * property PURGE_THRESH
         * @static
         * @type int
         * @default 20
         */
        PURGE_THRESH: 20,

        /**
         * The length time to poll for varName when loading a script in
         * Safari 2.x before the transaction fails.
         * property TIMEOUT
         * @static
         * @type int
         * @default 2000
         */
        TIMEOUT: 2000,

        /**
         * Called by the the helper for detecting script load in Safari
         * @method _finalize
         * @param id {string} the transaction id
         * @private
         */
        _finalize: function(id) {
            YAHOO.log(id + &quot; finalized &quot;, &quot;info&quot;, &quot;Get&quot;);
            lang.later(0, null, _finish, id);
        },

        /**
         * Abort a transaction
         * @method abort
         * @param {string|object} either the tId or the object returned from
         * script() or css()
         */
        abort: function(o) {
            var id = (lang.isString(o)) ? o : o.tId,
                q = queues[id];
            if (q) {
                YAHOO.log(&quot;Aborting &quot; + id, &quot;info&quot;, &quot;Get&quot;);
                q.aborted = true;
            }
        },

        /**
         * Fetches and inserts one or more script nodes into the head
         * of the current document or the document in a specified window.
         *
         * @method script
         * @static
         * @param url {string|string[]} the url or urls to the script(s)
         * @param opts {object} Options:
         * &lt;dl&gt;
         * &lt;dt&gt;onSuccess&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the script(s) are finished loading
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;onFailure&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the script load operation fails
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted successfully&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove any nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;onTimeout&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when a timeout occurs.
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;the window the script(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;scope&lt;/dt&gt;
         * &lt;dd&gt;the execution context for the callbacks&lt;/dd&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;a window other than the one the utility occupies&lt;/dd&gt;
         * &lt;dt&gt;autopurge&lt;/dt&gt;
         * &lt;dd&gt;
         * setting to true will let the utilities cleanup routine purge
         * the script once loaded
         * &lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;
         * data that is supplied to the callback when the script(s) are
         * loaded.
         * &lt;/dd&gt;
         * &lt;dt&gt;varName&lt;/dt&gt;
         * &lt;dd&gt;
         * variable that should be available when a script is finished
         * loading.  Used to help Safari 2.x and below with script load
         * detection.  The type of this property should match what was
         * passed into the url parameter: if loading a single url, a
         * string can be supplied.  If loading multiple scripts, you
         * must supply an array that contains the variable name for
         * each script.
         * &lt;/dd&gt;
         * &lt;dt&gt;insertBefore&lt;/dt&gt;
         * &lt;dd&gt;node or node id that will become the new node's nextSibling&lt;/dd&gt;
         * &lt;/dl&gt;
         * &lt;dt&gt;charset&lt;/dt&gt;
         * &lt;dd&gt;Node charset, deprecated, use 'attributes'&lt;/dd&gt;
         * &lt;dt&gt;attributes&lt;/dt&gt;
         * &lt;dd&gt;A hash of attributes to apply to dynamic nodes.&lt;/dd&gt;
         * &lt;dt&gt;timeout&lt;/dt&gt;
         * &lt;dd&gt;Number of milliseconds to wait before aborting and firing the timeout event&lt;/dd&gt;
         * &lt;pre&gt;
         * // assumes yahoo, dom, and event are already on the page
         * &amp;nbsp;&amp;nbsp;YAHOO.util.Get.script(
         * &amp;nbsp;&amp;nbsp;[&quot;http://yui.yahooapis.com/2.7.0/build/dragdrop/dragdrop-min.js&quot;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&quot;http://yui.yahooapis.com/2.7.0/build/animation/animation-min.js&quot;], &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;onSuccess: function(o) &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;YAHOO.log(o.data); // foo
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;new YAHOO.util.DDProxy(&quot;dd1&quot;); // also new o.reference(&quot;dd1&quot;); would work
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;this.log(&quot;won't cause error because YAHOO is the scope&quot;);
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;this.log(o.nodes.length === 2) // true
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;// o.purge(); // optionally remove the script nodes immediately
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;#125;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;onFailure: function(o) &amp;#123;
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;YAHOO.log(&quot;transaction failed&quot;);
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;#125;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;data: &quot;foo&quot;,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;timeout: 10000, // 10 second timeout
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;scope: YAHOO,
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;// win: otherframe // target another window/frame
         * &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;autopurge: true // allow the utility to choose when to remove the nodes
         * &amp;nbsp;&amp;nbsp;&amp;#125;);
         * &lt;/pre&gt;
         * @return {tId: string} an object containing info about the transaction
         */
        script: function(url, opts) { return _queue(&quot;script&quot;, url, opts); },

        /**
         * Fetches and inserts one or more css link nodes into the
         * head of the current document or the document in a specified
         * window.
         * @method css
         * @static
         * @param url {string} the url or urls to the css file(s)
         * @param opts Options:
         * &lt;dl&gt;
         * &lt;dt&gt;onSuccess&lt;/dt&gt;
         * &lt;dd&gt;
         * callback to execute when the css file(s) are finished loading
         * The callback receives an object back with the following
         * data:
         * &lt;dl&gt;win&lt;/dl&gt;
         * &lt;dd&gt;the window the link nodes(s) were inserted into&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;the data object passed in when the request was made&lt;/dd&gt;
         * &lt;dt&gt;nodes&lt;/dt&gt;
         * &lt;dd&gt;An array containing references to the nodes that were
         * inserted&lt;/dd&gt;
         * &lt;dt&gt;purge&lt;/dt&gt;
         * &lt;dd&gt;A function that, when executed, will remove the nodes
         * that were inserted&lt;/dd&gt;
         * &lt;dt&gt;
         * &lt;/dl&gt;
         * &lt;/dd&gt;
         * &lt;dt&gt;scope&lt;/dt&gt;
         * &lt;dd&gt;the execution context for the callbacks&lt;/dd&gt;
         * &lt;dt&gt;win&lt;/dt&gt;
         * &lt;dd&gt;a window other than the one the utility occupies&lt;/dd&gt;
         * &lt;dt&gt;data&lt;/dt&gt;
         * &lt;dd&gt;
         * data that is supplied to the callbacks when the nodes(s) are
         * loaded.
         * &lt;/dd&gt;
         * &lt;dt&gt;insertBefore&lt;/dt&gt;
         * &lt;dd&gt;node or node id that will become the new node's nextSibling&lt;/dd&gt;
         * &lt;dt&gt;charset&lt;/dt&gt;
         * &lt;dd&gt;Node charset, deprecated, use 'attributes'&lt;/dd&gt;
         * &lt;dt&gt;attributes&lt;/dt&gt;
         * &lt;dd&gt;A hash of attributes to apply to dynamic nodes.&lt;/dd&gt;
         * &lt;/dl&gt;
         * &lt;pre&gt;
         *      YAHOO.util.Get.css(&quot;http://yui.yahooapis.com/2.7.0/build/menu/assets/skins/sam/menu.css&quot;);
         * &lt;/pre&gt;
         * &lt;pre&gt;
         *      YAHOO.util.Get.css([&quot;http://yui.yahooapis.com/2.7.0/build/menu/assets/skins/sam/menu.css&quot;,
         *                          &quot;http://yui.yahooapis.com/2.7.0/build/logger/assets/skins/sam/logger.css&quot;]);
         * &lt;/pre&gt;
         * @return {tId: string} an object containing info about the transaction
         */
        css: function(url, opts) {
            return _queue(&quot;css&quot;, url, opts);
        }
    };
}();

YAHOO.register(&quot;get&quot;, YAHOO.util.Get, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*jslint evil: true, strict: false, regexp: false*/

/**
 * Provides dynamic loading for the YUI library.  It includes the dependency
 * info for the library, and will automatically pull in dependencies for
 * the modules requested.  It supports rollup files (such as utilities.js
 * and yahoo-dom-event.js), and will automatically use these when
 * appropriate in order to minimize the number of http connections
 * required to load all of the dependencies.
 *
 * @module yuiloader
 * @namespace YAHOO.util
 */

/**
 * YUILoader provides dynamic loading for YUI.
 * @class YAHOO.util.YUILoader
 * @todo
 *      version management, automatic sandboxing
 */
(function() {

    var Y = YAHOO,
        util = Y.util,
        lang = Y.lang,
        env = Y.env,
        PROV = &quot;_provides&quot;,
        SUPER = &quot;_supersedes&quot;,
        REQ = &quot;expanded&quot;,
        AFTER = &quot;_after&quot;,
        VERSION = &quot;2.9.0&quot;;

    // version hack for cdn testing
    // if (/VERSION/.test(VERSION)) {
        // VERSION = &quot;2.8.2&quot;;
    // }

    var YUI = {

        dupsAllowed: {'yahoo': true, 'get': true},

        /*
         * The library metadata for the current release  The is the default
         * value for YAHOO.util.YUILoader.moduleInfo
         * @property YUIInfo
         * @static
         */
        info: {

    // 'root': '2.5.2/build/',
    // 'base': 'http://yui.yahooapis.com/2.5.2/build/',

    'root': VERSION + '/build/',
    'base': 'http://yui.yahooapis.com/' + VERSION + '/build/',

    'comboBase': 'http://yui.yahooapis.com/combo?',

    'skin': {
        'defaultSkin': 'sam',
        'base': 'assets/skins/',
        'path': 'skin.css',
        'after': ['reset', 'fonts', 'grids', 'base'],
        'rollup': 3
    },

    dupsAllowed: ['yahoo', 'get'],

    'moduleInfo': {

        'animation': {
            'type': 'js',
            'path': 'animation/animation-min.js',
            'requires': ['dom', 'event']
        },

        'autocomplete': {
            'type': 'js',
            'path': 'autocomplete/autocomplete-min.js',
            'requires': ['dom', 'event', 'datasource'],
            'optional': ['connection', 'animation'],
            'skinnable': true
        },

        'base': {
            'type': 'css',
            'path': 'base/base-min.css',
            'after': ['reset', 'fonts', 'grids']
        },

        'button': {
            'type': 'js',
            'path': 'button/button-min.js',
            'requires': ['element'],
            'optional': ['menu'],
            'skinnable': true
        },

        'calendar': {
            'type': 'js',
            'path': 'calendar/calendar-min.js',
            'requires': ['event', 'dom'],
            supersedes: ['datemath'],
            'skinnable': true
        },

        'carousel': {
            'type': 'js',
            'path': 'carousel/carousel-min.js',
            'requires': ['element'],
            'optional': ['animation'],
            'skinnable': true
        },

        'charts': {
            'type': 'js',
            'path': 'charts/charts-min.js',
            'requires': ['element', 'json', 'datasource', 'swf']
        },

        'colorpicker': {
            'type': 'js',
            'path': 'colorpicker/colorpicker-min.js',
            'requires': ['slider', 'element'],
            'optional': ['animation'],
            'skinnable': true
        },

        'connection': {
            'type': 'js',
            'path': 'connection/connection-min.js',
            'requires': ['event'],
            'supersedes': ['connectioncore']
        },

        'connectioncore': {
            'type': 'js',
            'path': 'connection/connection_core-min.js',
            'requires': ['event'],
            'pkg': 'connection'
        },

        'container': {
            'type': 'js',
            'path': 'container/container-min.js',
            'requires': ['dom', 'event'],
            // button is also optional, but this creates a circular
            // dependency when loadOptional is specified.  button
            // optionally includes menu, menu requires container.
            'optional': ['dragdrop', 'animation', 'connection'],
            'supersedes': ['containercore'],
            'skinnable': true
        },

        'containercore': {
            'type': 'js',
            'path': 'container/container_core-min.js',
            'requires': ['dom', 'event'],
            'pkg': 'container'
        },

        'cookie': {
            'type': 'js',
            'path': 'cookie/cookie-min.js',
            'requires': ['yahoo']
        },

        'datasource': {
            'type': 'js',
            'path': 'datasource/datasource-min.js',
            'requires': ['event'],
            'optional': ['connection']
        },

        'datatable': {
            'type': 'js',
            'path': 'datatable/datatable-min.js',
            'requires': ['element', 'datasource'],
            'optional': ['calendar', 'dragdrop', 'paginator'],
            'skinnable': true
        },

        datemath: {
            'type': 'js',
            'path': 'datemath/datemath-min.js',
            'requires': ['yahoo']
        },

        'dom': {
            'type': 'js',
            'path': 'dom/dom-min.js',
            'requires': ['yahoo']
        },

        'dragdrop': {
            'type': 'js',
            'path': 'dragdrop/dragdrop-min.js',
            'requires': ['dom', 'event']
        },

        'editor': {
            'type': 'js',
            'path': 'editor/editor-min.js',
            'requires': ['menu', 'element', 'button'],
            'optional': ['animation', 'dragdrop'],
            'supersedes': ['simpleeditor'],
            'skinnable': true
        },

        'element': {
            'type': 'js',
            'path': 'element/element-min.js',
            'requires': ['dom', 'event'],
            'optional': ['event-mouseenter', 'event-delegate']
        },

        'element-delegate': {
            'type': 'js',
            'path': 'element-delegate/element-delegate-min.js',
            'requires': ['element']
        },

        'event': {
            'type': 'js',
            'path': 'event/event-min.js',
            'requires': ['yahoo']
        },

        'event-simulate': {
            'type': 'js',
            'path': 'event-simulate/event-simulate-min.js',
            'requires': ['event']
        },

        'event-delegate': {
            'type': 'js',
            'path': 'event-delegate/event-delegate-min.js',
            'requires': ['event'],
            'optional': ['selector']
        },

        'event-mouseenter': {
            'type': 'js',
            'path': 'event-mouseenter/event-mouseenter-min.js',
            'requires': ['dom', 'event']
        },

        'fonts': {
            'type': 'css',
            'path': 'fonts/fonts-min.css'
        },

        'get': {
            'type': 'js',
            'path': 'get/get-min.js',
            'requires': ['yahoo']
        },

        'grids': {
            'type': 'css',
            'path': 'grids/grids-min.css',
            'requires': ['fonts'],
            'optional': ['reset']
        },

        'history': {
            'type': 'js',
            'path': 'history/history-min.js',
            'requires': ['event']
        },

         'imagecropper': {
             'type': 'js',
             'path': 'imagecropper/imagecropper-min.js',
             'requires': ['dragdrop', 'element', 'resize'],
             'skinnable': true
         },

         'imageloader': {
            'type': 'js',
            'path': 'imageloader/imageloader-min.js',
            'requires': ['event', 'dom']
         },

         'json': {
            'type': 'js',
            'path': 'json/json-min.js',
            'requires': ['yahoo']
         },

         'layout': {
             'type': 'js',
             'path': 'layout/layout-min.js',
             'requires': ['element'],
             'optional': ['animation', 'dragdrop', 'resize', 'selector'],
             'skinnable': true
         },

        'logger': {
            'type': 'js',
            'path': 'logger/logger-min.js',
            'requires': ['event', 'dom'],
            'optional': ['dragdrop'],
            'skinnable': true
        },

        'menu': {
            'type': 'js',
            'path': 'menu/menu-min.js',
            'requires': ['containercore'],
            'skinnable': true
        },

        'paginator': {
            'type': 'js',
            'path': 'paginator/paginator-min.js',
            'requires': ['element'],
            'skinnable': true
        },

        'profiler': {
            'type': 'js',
            'path': 'profiler/profiler-min.js',
            'requires': ['yahoo']
        },


        'profilerviewer': {
            'type': 'js',
            'path': 'profilerviewer/profilerviewer-min.js',
            'requires': ['profiler', 'yuiloader', 'element'],
            'skinnable': true
        },

        'progressbar': {
            'type': 'js',
            'path': 'progressbar/progressbar-min.js',
            'requires': ['element'],
            'optional': ['animation'],
            'skinnable': true
        },

        'reset': {
            'type': 'css',
            'path': 'reset/reset-min.css'
        },

        'reset-fonts-grids': {
            'type': 'css',
            'path': 'reset-fonts-grids/reset-fonts-grids.css',
            'supersedes': ['reset', 'fonts', 'grids', 'reset-fonts'],
            'rollup': 4
        },

        'reset-fonts': {
            'type': 'css',
            'path': 'reset-fonts/reset-fonts.css',
            'supersedes': ['reset', 'fonts'],
            'rollup': 2
        },

         'resize': {
             'type': 'js',
             'path': 'resize/resize-min.js',
             'requires': ['dragdrop', 'element'],
             'optional': ['animation'],
             'skinnable': true
         },

        'selector': {
            'type': 'js',
            'path': 'selector/selector-min.js',
            'requires': ['yahoo', 'dom']
        },

        'simpleeditor': {
            'type': 'js',
            'path': 'editor/simpleeditor-min.js',
            'requires': ['element'],
            'optional': ['containercore', 'menu', 'button', 'animation', 'dragdrop'],
            'skinnable': true,
            'pkg': 'editor'
        },

        'slider': {
            'type': 'js',
            'path': 'slider/slider-min.js',
            'requires': ['dragdrop'],
            'optional': ['animation'],
            'skinnable': true
        },

        'storage': {
            'type': 'js',
            'path': 'storage/storage-min.js',
            'requires': ['yahoo', 'event', 'cookie'],
            'optional': ['swfstore']
        },

         'stylesheet': {
            'type': 'js',
            'path': 'stylesheet/stylesheet-min.js',
            'requires': ['yahoo']
         },

        'swf': {
            'type': 'js',
            'path': 'swf/swf-min.js',
            'requires': ['element'],
            'supersedes': ['swfdetect']
        },

        'swfdetect': {
            'type': 'js',
            'path': 'swfdetect/swfdetect-min.js',
            'requires': ['yahoo']
        },

        'swfstore': {
            'type': 'js',
            'path': 'swfstore/swfstore-min.js',
            'requires': ['element', 'cookie', 'swf']
        },

        'tabview': {
            'type': 'js',
            'path': 'tabview/tabview-min.js',
            'requires': ['element'],
            'optional': ['connection'],
            'skinnable': true
        },

        'treeview': {
            'type': 'js',
            'path': 'treeview/treeview-min.js',
            'requires': ['event', 'dom'],
            'optional': ['json', 'animation', 'calendar'],
            'skinnable': true
        },

        'uploader': {
            'type': 'js',
            'path': 'uploader/uploader-min.js',
            'requires': ['element']
        },

        'utilities': {
            'type': 'js',
            'path': 'utilities/utilities.js',
            'supersedes': ['yahoo', 'event', 'dragdrop', 'animation', 'dom', 'connection', 'element', 'yahoo-dom-event', 'get', 'yuiloader', 'yuiloader-dom-event'],
            'rollup': 8
        },

        'yahoo': {
            'type': 'js',
            'path': 'yahoo/yahoo-min.js'
        },

        'yahoo-dom-event': {
            'type': 'js',
            'path': 'yahoo-dom-event/yahoo-dom-event.js',
            'supersedes': ['yahoo', 'event', 'dom'],
            'rollup': 3
        },

        'yuiloader': {
            'type': 'js',
            'path': 'yuiloader/yuiloader-min.js',
            'supersedes': ['yahoo', 'get']
        },

        'yuiloader-dom-event': {
            'type': 'js',
            'path': 'yuiloader-dom-event/yuiloader-dom-event.js',
            'supersedes': ['yahoo', 'dom', 'event', 'get', 'yuiloader', 'yahoo-dom-event'],
            'rollup': 5
        },

        'yuitest': {
            'type': 'js',
            'path': 'yuitest/yuitest-min.js',
            'requires': ['logger'],
            'optional': ['event-simulate'],
            'skinnable': true
        }
    }
},
        ObjectUtil: {
            appendArray: function(o, a) {
                if (a) {
                    for (var i=0; i&lt;a.length; i=i+1) {
                        o[a[i]] = true;
                    }
                }
            },

            keys: function(o, ordered) {
                var a=[], i;
                for (i in o) {
                    if (lang.hasOwnProperty(o, i)) {
                        a.push(i);
                    }
                }

                return a;
            }
        },

        ArrayUtil: {

            appendArray: function(a1, a2) {
                Array.prototype.push.apply(a1, a2);
                /*
                for (var i=0; i&lt;a2.length; i=i+1) {
                    a1.push(a2[i]);
                }
                */
            },

            indexOf: function(a, val) {
                for (var i=0; i&lt;a.length; i=i+1) {
                    if (a[i] === val) {
                        return i;
                    }
                }

                return -1;
            },

            toObject: function(a) {
                var o = {};
                for (var i=0; i&lt;a.length; i=i+1) {
                    o[a[i]] = true;
                }

                return o;
            },

            /*
             * Returns a unique array.  Does not maintain order, which is fine
             * for this application, and performs better than it would if it
             * did.
             */
            uniq: function(a) {
                return YUI.ObjectUtil.keys(YUI.ArrayUtil.toObject(a));
            }
        }
    };

    YAHOO.util.YUILoader = function(o) {

        /**
         * Internal callback to handle multiple internal insert() calls
         * so that css is inserted prior to js
         * @property _internalCallback
         * @private
         */
        this._internalCallback = null;

        /**
         * Use the YAHOO environment listener to detect script load.  This
         * is only switched on for Safari 2.x and below.
         * @property _useYahooListener
         * @private
         */
        this._useYahooListener = false;

        /**
         * Callback that will be executed when the loader is finished
         * with an insert
         * @method onSuccess
         * @type function
         */
        this.onSuccess = null;

        /**
         * Callback that will be executed if there is a failure
         * @method onFailure
         * @type function
         */
        this.onFailure = Y.log;

        /**
         * Callback that will be executed each time a new module is loaded
         * @method onProgress
         * @type function
         */
        this.onProgress = null;

        /**
         * Callback that will be executed if a timeout occurs
         * @method onTimeout
         * @type function
         */
        this.onTimeout = null;

        /**
         * The execution scope for all callbacks
         * @property scope
         * @default this
         */
        this.scope = this;

        /**
         * Data that is passed to all callbacks
         * @property data
         */
        this.data = null;

        /**
         * Node reference or id where new nodes should be inserted before
         * @property insertBefore
         * @type string|HTMLElement
         */
        this.insertBefore = null;

        /**
         * The charset attribute for inserted nodes
         * @property charset
         * @type string
         * @default utf-8
         */
        this.charset = null;

        /**
         * The name of the variable in a sandbox or script node
         * (for external script support in Safari 2.x and earlier)
         * to reference when the load is complete.  If this variable
         * is not available in the specified scripts, the operation will
         * fail.
         * @property varName
         * @type string
         */
        this.varName = null;

        /**
         * The base directory.
         * @property base
         * @type string
         * @default http://yui.yahooapis.com/[YUI VERSION]/build/
         */
        this.base = YUI.info.base;

        /**
         * Base path for the combo service
         * @property comboBase
         * @type string
         * @default http://yui.yahooapis.com/combo?
         */
        this.comboBase = YUI.info.comboBase;

        /**
         * If configured, YUI will use the the combo handler on the
         * Yahoo! CDN to pontentially reduce the number of http requests
         * required.
         * @property combine
         * @type boolean
         * @default false
         */
        // this.combine = (o &amp;&amp; !('base' in o));
        this.combine = false;


        /**
         * Root path to prepend to module path for the combo
         * service
         * @property root
         * @type string
         * @default [YUI VERSION]/build/
         */
        this.root = YUI.info.root;

        /**
         * Timeout value in milliseconds.  If set, this value will be used by
         * the get utility.  the timeout event will fire if
         * a timeout occurs.
         * @property timeout
         * @type int
         */
        this.timeout = 0;

        /**
         * A list of modules that should not be loaded, even if
         * they turn up in the dependency tree
         * @property ignore
         * @type string[]
         */
        this.ignore = null;

        /**
         * A list of modules that should always be loaded, even
         * if they have already been inserted into the page.
         * @property force
         * @type string[]
         */
        this.force = null;

        /**
         * Should we allow rollups
         * @property allowRollup
         * @type boolean
         * @default true
         */
        this.allowRollup = true;

        /**
         * A filter to apply to result urls.  This filter will modify the default
         * path for all modules.  The default path for the YUI library is the
         * minified version of the files (e.g., event-min.js).  The filter property
         * can be a predefined filter or a custom filter.  The valid predefined
         * filters are:
         * &lt;dl&gt;
         *  &lt;dt&gt;DEBUG&lt;/dt&gt;
         *  &lt;dd&gt;Selects the debug versions of the library (e.g., event-debug.js).
         *      This option will automatically include the logger widget&lt;/dd&gt;
         *  &lt;dt&gt;RAW&lt;/dt&gt;
         *  &lt;dd&gt;Selects the non-minified version of the library (e.g., event.js).
         * &lt;/dl&gt;
         * You can also define a custom filter, which must be an object literal
         * containing a search expression and a replace string:
         * &lt;pre&gt;
         *  myFilter: &amp;#123;
         *      'searchExp': &quot;-min\\.js&quot;,
         *      'replaceStr': &quot;-debug.js&quot;
         *  &amp;#125;
         * &lt;/pre&gt;
         * @property filter
         * @type string|{searchExp: string, replaceStr: string}
         */
        this.filter = null;

        /**
         * The list of requested modules
         * @property required
         * @type {string: boolean}
         */
        this.required = {};

        /**
         * The library metadata
         * @property moduleInfo
         */
        this.moduleInfo = lang.merge(YUI.info.moduleInfo);

        /**
         * List of rollup files found in the library metadata
         * @property rollups
         */
        this.rollups = null;

        /**
         * Whether or not to load optional dependencies for
         * the requested modules
         * @property loadOptional
         * @type boolean
         * @default false
         */
        this.loadOptional = false;

        /**
         * All of the derived dependencies in sorted order, which
         * will be populated when either calculate() or insert()
         * is called
         * @property sorted
         * @type string[]
         */
        this.sorted = [];

        /**
         * Set when beginning to compute the dependency tree.
         * Composed of what YAHOO reports to be loaded combined
         * with what has been loaded by the tool
         * @propery loaded
         * @type {string: boolean}
         */
        this.loaded = {};

        /**
         * Flag to indicate the dependency tree needs to be recomputed
         * if insert is called again.
         * @property dirty
         * @type boolean
         * @default true
         */
        this.dirty = true;

        /**
         * List of modules inserted by the utility
         * @property inserted
         * @type {string: boolean}
         */
        this.inserted = {};

        /**
         * Provides the information used to skin the skinnable components.
         * The following skin definition would result in 'skin1' and 'skin2'
         * being loaded for calendar (if calendar was requested), and
         * 'sam' for all other skinnable components:
         *
         *   &lt;code&gt;
         *   skin: {
         *
         *      // The default skin, which is automatically applied if not
         *      // overriden by a component-specific skin definition.
         *      // Change this in to apply a different skin globally
         *      defaultSkin: 'sam',
         *
         *      // This is combined with the loader base property to get
         *      // the default root directory for a skin. ex:
         *      // http://yui.yahooapis.com/2.3.0/build/assets/skins/sam/
         *      base: 'assets/skins/',
         *
         *      // The name of the rollup css file for the skin
         *      path: 'skin.css',
         *
         *      // The number of skinnable components requested that are
         *      // required before using the rollup file rather than the
         *      // individual component css files
         *      rollup: 3,
         *
         *      // Any component-specific overrides can be specified here,
         *      // making it possible to load different skins for different
         *      // components.  It is possible to load more than one skin
         *      // for a given component as well.
         *      overrides: {
         *          calendar: ['skin1', 'skin2']
         *      }
         *   }
         *   &lt;/code&gt;
         *   @property skin
         */

        var self = this;

        env.listeners.push(function(m) {
            if (self._useYahooListener) {
                //Y.log(&quot;YAHOO listener: &quot; + m.name);
                self.loadNext(m.name);
            }
        });

        this.skin = lang.merge(YUI.info.skin);

        this._config(o);

    };

    Y.util.YUILoader.prototype = {

        FILTERS: {
            RAW: {
                'searchExp': &quot;-min\\.js&quot;,
                'replaceStr': &quot;.js&quot;
            },
            DEBUG: {
                'searchExp': &quot;-min\\.js&quot;,
                'replaceStr': &quot;-debug.js&quot;
            }
        },

        SKIN_PREFIX: &quot;skin-&quot;,

        _config: function(o) {

            // apply config values
            if (o) {
                for (var i in o) {
                    if (lang.hasOwnProperty(o, i)) {
                        if (i == &quot;require&quot;) {
                            this.require(o[i]);
                        } else {
                            this[i] = o[i];
                        }
                    }
                }
            }

            // fix filter
            var f = this.filter;

            if (lang.isString(f)) {
                f = f.toUpperCase();

                // the logger must be available in order to use the debug
                // versions of the library
                if (f === &quot;DEBUG&quot;) {
                    this.require(&quot;logger&quot;);
                }

                // hack to handle a a bug where LogWriter is being instantiated
                // at load time, and the loader has no way to sort above it
                // at the moment.
                if (!Y.widget.LogWriter) {
                    Y.widget.LogWriter = function() {
                        return Y;
                    };
                }

                this.filter = this.FILTERS[f];
            }

        },

        /** Add a new module to the component metadata.
         * &lt;dl&gt;
         *     &lt;dt&gt;name:&lt;/dt&gt;       &lt;dd&gt;required, the component name&lt;/dd&gt;
         *     &lt;dt&gt;type:&lt;/dt&gt;       &lt;dd&gt;required, the component type (js or css)&lt;/dd&gt;
         *     &lt;dt&gt;path:&lt;/dt&gt;       &lt;dd&gt;required, the path to the script from &quot;base&quot;&lt;/dd&gt;
         *     &lt;dt&gt;requires:&lt;/dt&gt;   &lt;dd&gt;array of modules required by this component&lt;/dd&gt;
         *     &lt;dt&gt;optional:&lt;/dt&gt;   &lt;dd&gt;array of optional modules for this component&lt;/dd&gt;
         *     &lt;dt&gt;supersedes:&lt;/dt&gt; &lt;dd&gt;array of the modules this component replaces&lt;/dd&gt;
         *     &lt;dt&gt;after:&lt;/dt&gt;      &lt;dd&gt;array of modules the components which, if present, should be sorted above this one&lt;/dd&gt;
         *     &lt;dt&gt;rollup:&lt;/dt&gt;     &lt;dd&gt;the number of superseded modules required for automatic rollup&lt;/dd&gt;
         *     &lt;dt&gt;fullpath:&lt;/dt&gt;   &lt;dd&gt;If fullpath is specified, this is used instead of the configured base + path&lt;/dd&gt;
         *     &lt;dt&gt;skinnable:&lt;/dt&gt;  &lt;dd&gt;flag to determine if skin assets should automatically be pulled in&lt;/dd&gt;
         * &lt;/dl&gt;
         * @method addModule
         * @param o An object containing the module data
         * @return {boolean} true if the module was added, false if
         * the object passed in did not provide all required attributes
         */
        addModule: function(o) {

            if (!o || !o.name || !o.type || (!o.path &amp;&amp; !o.fullpath)) {
                return false;
            }

            o.ext = ('ext' in o) ? o.ext : true;
            o.requires = o.requires || [];

            this.moduleInfo[o.name] = o;
            this.dirty = true;

            return true;
        },

        /**
         * Add a requirement for one or more module
         * @method require
         * @param what {string[] | string*} the modules to load
         */
        require: function(what) {
            var a = (typeof what === &quot;string&quot;) ? arguments : what;
            this.dirty = true;
            YUI.ObjectUtil.appendArray(this.required, a);
        },

        /**
         * Adds the skin def to the module info
         * @method _addSkin
         * @param skin {string} the name of the skin
         * @param mod {string} the name of the module
         * @return {string} the module name for the skin
         * @private
         */
        _addSkin: function(skin, mod) {

            // Add a module definition for the skin rollup css
            var name = this.formatSkin(skin), info = this.moduleInfo,
                sinf = this.skin, ext = info[mod] &amp;&amp; info[mod].ext;

            // Y.log('ext? ' + mod + &quot;: &quot; + ext);
            if (!info[name]) {
                // Y.log('adding skin ' + name);
                this.addModule({
                    'name': name,
                    'type': 'css',
                    'path': sinf.base + skin + '/' + sinf.path,
                    //'supersedes': '*',
                    'after': sinf.after,
                    'rollup': sinf.rollup,
                    'ext': ext
                });
            }

            // Add a module definition for the module-specific skin css
            if (mod) {
                name = this.formatSkin(skin, mod);
                if (!info[name]) {
                    var mdef = info[mod], pkg = mdef.pkg || mod;
                    // Y.log('adding skin ' + name);
                    this.addModule({
                        'name': name,
                        'type': 'css',
                        'after': sinf.after,
                        'path': pkg + '/' + sinf.base + skin + '/' + mod + '.css',
                        'ext': ext
                    });
                }
            }

            return name;
        },

        /**
         * Returns an object containing properties for all modules required
         * in order to load the requested module
         * @method getRequires
         * @param mod The module definition from moduleInfo
         */
        getRequires: function(mod) {
            if (!mod) {
                return [];
            }

            if (!this.dirty &amp;&amp; mod.expanded) {
                return mod.expanded;
            }

            mod.requires=mod.requires || [];
            var i, d=[], r=mod.requires, o=mod.optional, info=this.moduleInfo, m;
            for (i=0; i&lt;r.length; i=i+1) {
                d.push(r[i]);
                m = info[r[i]];
                YUI.ArrayUtil.appendArray(d, this.getRequires(m));
            }

            if (o &amp;&amp; this.loadOptional) {
                for (i=0; i&lt;o.length; i=i+1) {
                    d.push(o[i]);
                    YUI.ArrayUtil.appendArray(d, this.getRequires(info[o[i]]));
                }
            }

            mod.expanded = YUI.ArrayUtil.uniq(d);

            return mod.expanded;
        },


        /**
         * Returns an object literal of the modules the supplied module satisfies
         * @method getProvides
         * @param name{string} The name of the module
         * @param notMe {string} don't add this module name, only include superseded modules
         * @return what this module provides
         */
        getProvides: function(name, notMe) {
            var addMe = !(notMe), ckey = (addMe) ? PROV : SUPER,
                m = this.moduleInfo[name], o = {};

            if (!m) {
                return o;
            }

            if (m[ckey]) {
// Y.log('cached: ' + name + ' ' + ckey + ' ' + lang.dump(this.moduleInfo[name][ckey], 0));
                return m[ckey];
            }

            var s = m.supersedes, done={}, me = this;

            // use worker to break cycles
            var add = function(mm) {
                if (!done[mm]) {
                    // Y.log(name + ' provides worker trying: ' + mm);
                    done[mm] = true;
                    // we always want the return value normal behavior
                    // (provides) for superseded modules.
                    lang.augmentObject(o, me.getProvides(mm));
                }

                // else {
                // Y.log(name + ' provides worker skipping done: ' + mm);
                // }
            };

            // calculate superseded modules
            if (s) {
                for (var i=0; i&lt;s.length; i=i+1) {
                    add(s[i]);
                }
            }

            // supersedes cache
            m[SUPER] = o;
            // provides cache
            m[PROV] = lang.merge(o);
            m[PROV][name] = true;

// Y.log(name + &quot; supersedes &quot; + lang.dump(m[SUPER], 0));
// Y.log(name + &quot; provides &quot; + lang.dump(m[PROV], 0));

            return m[ckey];
        },


        /**
         * Calculates the dependency tree, the result is stored in the sorted
         * property
         * @method calculate
         * @param o optional options object
         */
        calculate: function(o) {
            if (o || this.dirty) {
                this._config(o);
                this._setup();
                this._explode();
                if (this.allowRollup) {
                    this._rollup();
                }
                this._reduce();
                this._sort();

                // Y.log(&quot;after calculate: &quot; + lang.dump(this.required));

                this.dirty = false;
            }
        },

        /**
         * Investigates the current YUI configuration on the page.  By default,
         * modules already detected will not be loaded again unless a force
         * option is encountered.  Called by calculate()
         * @method _setup
         * @private
         */
        _setup: function() {

            var info = this.moduleInfo, name, i, j;

            // Create skin modules
            for (name in info) {

                if (lang.hasOwnProperty(info, name)) {
                    var m = info[name];
                    if (m &amp;&amp; m.skinnable) {
                        // Y.log(&quot;skinning: &quot; + name);
                        var o=this.skin.overrides, smod;
                        if (o &amp;&amp; o[name]) {
                            for (i=0; i&lt;o[name].length; i=i+1) {
                                smod = this._addSkin(o[name][i], name);
                            }
                        } else {
                            smod = this._addSkin(this.skin.defaultSkin, name);
                        }

                        if (YUI.ArrayUtil.indexOf(m.requires, smod) == -1) {
                            m.requires.push(smod);
                        }
                    }
                }

            }

            var l = lang.merge(this.inserted); // shallow clone

            if (!this._sandbox) {
                l = lang.merge(l, env.modules);
            }

            // Y.log(&quot;Already loaded stuff: &quot; + lang.dump(l, 0));

            // add the ignore list to the list of loaded packages
            if (this.ignore) {
                YUI.ObjectUtil.appendArray(l, this.ignore);
            }

            // remove modules on the force list from the loaded list
            if (this.force) {
                for (i=0; i&lt;this.force.length; i=i+1) {
                    if (this.force[i] in l) {
                        delete l[this.force[i]];
                    }
                }
            }

            // expand the list to include superseded modules
            for (j in l) {
                // Y.log(&quot;expanding: &quot; + j);
                if (lang.hasOwnProperty(l, j)) {
                    lang.augmentObject(l, this.getProvides(j));
                }
            }

            // Y.log(&quot;loaded expanded: &quot; + lang.dump(l, 0));

            this.loaded = l;

        },


        /**
         * Inspects the required modules list looking for additional
         * dependencies.  Expands the required list to include all
         * required modules.  Called by calculate()
         * @method _explode
         * @private
         */
        _explode: function() {

            var r=this.required, i, mod;

            for (i in r) {
                if (lang.hasOwnProperty(r, i)) {
                    mod = this.moduleInfo[i];
                    if (mod) {

                        var req = this.getRequires(mod);

                        if (req) {
                            YUI.ObjectUtil.appendArray(r, req);
                        }
                    }
                }
            }
        },

        /*
         * @method _skin
         * @private
         * @deprecated
         */
        _skin: function() {
        },

        /**
         * Returns the skin module name for the specified skin name.  If a
         * module name is supplied, the returned skin module name is
         * specific to the module passed in.
         * @method formatSkin
         * @param skin {string} the name of the skin
         * @param mod {string} optional: the name of a module to skin
         * @return {string} the full skin module name
         */
        formatSkin: function(skin, mod) {
            var s = this.SKIN_PREFIX + skin;
            if (mod) {
                s = s + &quot;-&quot; + mod;
            }

            return s;
        },

        /**
         * Reverses &lt;code&gt;formatSkin&lt;/code&gt;, providing the skin name and
         * module name if the string matches the pattern for skins.
         * @method parseSkin
         * @param mod {string} the module name to parse
         * @return {skin: string, module: string} the parsed skin name
         * and module name, or null if the supplied string does not match
         * the skin pattern
         */
        parseSkin: function(mod) {

            if (mod.indexOf(this.SKIN_PREFIX) === 0) {
                var a = mod.split(&quot;-&quot;);
                return {skin: a[1], module: a[2]};
            }

            return null;
        },

        /**
         * Look for rollup packages to determine if all of the modules a
         * rollup supersedes are required.  If so, include the rollup to
         * help reduce the total number of connections required.  Called
         * by calculate()
         * @method _rollup
         * @private
         */
        _rollup: function() {
            var i, j, m, s, rollups={}, r=this.required, roll,
                info = this.moduleInfo;

            // find and cache rollup modules
            if (this.dirty || !this.rollups) {
                for (i in info) {
                    if (lang.hasOwnProperty(info, i)) {
                        m = info[i];
                        //if (m &amp;&amp; m.rollup &amp;&amp; m.supersedes) {
                        if (m &amp;&amp; m.rollup) {
                            rollups[i] = m;
                        }
                    }
                }

                this.rollups = rollups;
            }

            // make as many passes as needed to pick up rollup rollups
            for (;;) {
                var rolled = false;

                // go through the rollup candidates
                for (i in rollups) {

                    // there can be only one
                    if (!r[i] &amp;&amp; !this.loaded[i]) {
                        m =info[i]; s = m.supersedes; roll=false;

                        if (!m.rollup) {
                            continue;
                        }

                        var skin = (m.ext) ? false : this.parseSkin(i), c = 0;

                        // Y.log('skin? ' + i + &quot;: &quot; + skin);
                        if (skin) {
                            for (j in r) {
                                if (lang.hasOwnProperty(r, j)) {
                                    if (i !== j &amp;&amp; this.parseSkin(j)) {
                                        c++;
                                        roll = (c &gt;= m.rollup);
                                        if (roll) {
                                            // Y.log(&quot;skin rollup &quot; + lang.dump(r));
                                            break;
                                        }
                                    }
                                }
                            }

                        } else {

                            // check the threshold
                            for (j=0;j&lt;s.length;j=j+1) {

                                // if the superseded module is loaded, we can't load the rollup
                                if (this.loaded[s[j]] &amp;&amp; (!YUI.dupsAllowed[s[j]])) {
                                    roll = false;
                                    break;
                                // increment the counter if this module is required.  if we are
                                // beyond the rollup threshold, we will use the rollup module
                                } else if (r[s[j]]) {
                                    c++;
                                    roll = (c &gt;= m.rollup);
                                    if (roll) {
                                        // Y.log(&quot;over thresh &quot; + c + &quot;, &quot; + lang.dump(r));
                                        break;
                                    }
                                }
                            }
                        }

                        if (roll) {
                            // Y.log(&quot;rollup: &quot; +  i + &quot;, &quot; + lang.dump(this, 1));
                            // add the rollup
                            r[i] = true;
                            rolled = true;

                            // expand the rollup's dependencies
                            this.getRequires(m);
                        }
                    }
                }

                // if we made it here w/o rolling up something, we are done
                if (!rolled) {
                    break;
                }
            }
        },

        /**
         * Remove superceded modules and loaded modules.  Called by
         * calculate() after we have the mega list of all dependencies
         * @method _reduce
         * @private
         */
        _reduce: function() {

            var i, j, s, m, r=this.required;
            for (i in r) {

                // remove if already loaded
                if (i in this.loaded) {
                    delete r[i];

                // remove anything this module supersedes
                } else {

                    var skinDef = this.parseSkin(i);

                    if (skinDef) {
                        //YAHOO.log(&quot;skin found in reduce: &quot; + skinDef.skin + &quot;, &quot; + skinDef.module);
                        // the skin rollup will not have a module name
                        if (!skinDef.module) {
                            var skin_pre = this.SKIN_PREFIX + skinDef.skin;
                            //YAHOO.log(&quot;skin_pre: &quot; + skin_pre);
                            for (j in r) {

                                if (lang.hasOwnProperty(r, j)) {
                                    m = this.moduleInfo[j];
                                    var ext = m &amp;&amp; m.ext;
                                    if (!ext &amp;&amp; j !== i &amp;&amp; j.indexOf(skin_pre) &gt; -1) {
                                        // Y.log (&quot;removing component skin: &quot; + j);
                                        delete r[j];
                                    }
                                }
                            }
                        }
                    } else {

                         m = this.moduleInfo[i];
                         s = m &amp;&amp; m.supersedes;
                         if (s) {
                             for (j=0; j&lt;s.length; j=j+1) {
                                 if (s[j] in r) {
                                     delete r[s[j]];
                                 }
                             }
                         }
                    }
                }
            }
        },

        _onFailure: function(msg) {
            YAHOO.log('Failure', 'info', 'loader');

            var f = this.onFailure;
            if (f) {
                f.call(this.scope, {
                    msg: 'failure: ' + msg,
                    data: this.data,
                    success: false
                });
            }
        },

        _onTimeout: function() {
            YAHOO.log('Timeout', 'info', 'loader');
            var f = this.onTimeout;
            if (f) {
                f.call(this.scope, {
                    msg: 'timeout',
                    data: this.data,
                    success: false
                });
            }
        },

        /**
         * Sorts the dependency tree.  The last step of calculate()
         * @method _sort
         * @private
         */
        _sort: function() {
            // create an indexed list
            var s=[], info=this.moduleInfo, loaded=this.loaded,
                checkOptional=!this.loadOptional, me = this;

            // returns true if b is not loaded, and is required
            // directly or by means of modules it supersedes.
            var requires = function(aa, bb) {

                var mm=info[aa];

                if (loaded[bb] || !mm) {
                    return false;
                }

                var ii,
                    rr = mm.expanded,
                    after = mm.after,
                    other = info[bb],
                    optional = mm.optional;


                // check if this module requires the other directly
                if (rr &amp;&amp; YUI.ArrayUtil.indexOf(rr, bb) &gt; -1) {
                    return true;
                }

                // check if this module should be sorted after the other
                if (after &amp;&amp; YUI.ArrayUtil.indexOf(after, bb) &gt; -1) {
                    return true;
                }

                // if loadOptional is not specified, optional dependencies still
                // must be sorted correctly when present.
                if (checkOptional &amp;&amp; optional &amp;&amp; YUI.ArrayUtil.indexOf(optional, bb) &gt; -1) {
                    return true;
                }

                // check if this module requires one the other supersedes
                var ss=info[bb] &amp;&amp; info[bb].supersedes;
                if (ss) {
                    for (ii=0; ii&lt;ss.length; ii=ii+1) {
                        if (requires(aa, ss[ii])) {
                            return true;
                        }
                    }
                }

                // external css files should be sorted below yui css
                if (mm.ext &amp;&amp; mm.type == 'css' &amp;&amp; !other.ext &amp;&amp; other.type == 'css') {
                    return true;
                }

                return false;
            };

            // get the required items out of the obj into an array so we
            // can sort
            for (var i in this.required) {
                if (lang.hasOwnProperty(this.required, i)) {
                    s.push(i);
                }
            }

            // pointer to the first unsorted item
            var p=0;

            // keep going until we make a pass without moving anything
            for (;;) {

                var l=s.length, a, b, j, k, moved=false;

                // start the loop after items that are already sorted
                for (j=p; j&lt;l; j=j+1) {

                    // check the next module on the list to see if its
                    // dependencies have been met
                    a = s[j];

                    // check everything below current item and move if we
                    // find a requirement for the current item
                    for (k=j+1; k&lt;l; k=k+1) {
                        if (requires(a, s[k])) {

                            // extract the dependency so we can move it up
                            b = s.splice(k, 1);

                            // insert the dependency above the item that
                            // requires it
                            s.splice(j, 0, b[0]);

                            moved = true;
                            break;
                        }
                    }

                    // jump out of loop if we moved something
                    if (moved) {
                        break;
                    // this item is sorted, move our pointer and keep going
                    } else {
                        p = p + 1;
                    }
                }

                // when we make it here and moved is false, we are
                // finished sorting
                if (!moved) {
                    break;
                }

            }

            this.sorted = s;
        },

        toString: function() {
            var o = {
                type: &quot;YUILoader&quot;,
                base: this.base,
                filter: this.filter,
                required: this.required,
                loaded: this.loaded,
                inserted: this.inserted
            };

            lang.dump(o, 1);
        },

        _combine: function() {

                this._combining = [];

                var self = this,
                    s=this.sorted,
                    len = s.length,
                    js = this.comboBase,
                    css = this.comboBase,
                    target,
                    startLen = js.length,
                    i, m, type = this.loadType;

                YAHOO.log('type ' + type);

                for (i=0; i&lt;len; i=i+1) {

                    m = this.moduleInfo[s[i]];

                    if (m &amp;&amp; !m.ext &amp;&amp; (!type || type === m.type)) {

                        target = this.root + m.path;

                        // if (i &lt; len-1) {
                        target += '&amp;';
                        // }

                        if (m.type == 'js') {
                            js += target;
                        } else {
                            css += target;
                        }

                        // YAHOO.log(target);
                        this._combining.push(s[i]);
                    }
                }

                if (this._combining.length) {

YAHOO.log('Attempting to combine: ' + this._combining, &quot;info&quot;, &quot;loader&quot;);

                    var callback=function(o) {
                        // YAHOO.log('Combo complete: ' + o.data, &quot;info&quot;, &quot;loader&quot;);
                        // this._combineComplete = true;

                        var c=this._combining, len=c.length, i, m;
                        for (i=0; i&lt;len; i=i+1) {
                            this.inserted[c[i]] = true;
                        }

                        this.loadNext(o.data);
                    },

                    loadScript = function() {
                        // YAHOO.log('combining js: ' + js);
                        if (js.length &gt; startLen) {
                            YAHOO.util.Get.script(self._filter(js), {
                                data: self._loading,
                                onSuccess: callback,
                                onFailure: self._onFailure,
                                onTimeout: self._onTimeout,
                                insertBefore: self.insertBefore,
                                charset: self.charset,
                                timeout: self.timeout,
                                scope: self
                            });
                        } else {
                            this.loadNext();
                        }
                    };

                    // load the css first
                    // YAHOO.log('combining css: ' + css);
                    if (css.length &gt; startLen) {
                        YAHOO.util.Get.css(this._filter(css), {
                            data: this._loading,
                            onSuccess: loadScript,
                            onFailure: this._onFailure,
                            onTimeout: this._onTimeout,
                            insertBefore: this.insertBefore,
                            charset: this.charset,
                            timeout: this.timeout,
                            scope: self
                        });
                    } else {
                        loadScript();
                    }

                    return;

                } else {
                    // this._combineComplete = true;
                    this.loadNext(this._loading);
                }
        },

        /**
         * inserts the requested modules and their dependencies.
         * &lt;code&gt;type&lt;/code&gt; can be &quot;js&quot; or &quot;css&quot;.  Both script and
         * css are inserted if type is not provided.
         * @method insert
         * @param o optional options object
         * @param type {string} the type of dependency to insert
         */
        insert: function(o, type) {
            // if (o) {
            //     Y.log(&quot;insert: &quot; + lang.dump(o, 1) + &quot;, &quot; + type);
            // } else {
            //     Y.log(&quot;insert: &quot; + this.toString() + &quot;, &quot; + type);
            // }

            // build the dependency list
            this.calculate(o);


            // set a flag to indicate the load has started
            this._loading = true;

            // flag to indicate we are done with the combo service
            // and any additional files will need to be loaded
            // individually
            // this._combineComplete = false;

            // keep the loadType (js, css or undefined) cached
            this.loadType = type;

            if (this.combine) {
                return this._combine();
            }

            if (!type) {
                // Y.log(&quot;trying to load css first&quot;);
                var self = this;
                this._internalCallback = function() {
                            self._internalCallback = null;
                            self.insert(null, &quot;js&quot;);
                        };
                this.insert(null, &quot;css&quot;);
                return;
            }


            // start the load
            this.loadNext();

        },

        /**
         * Interns the script for the requested modules.  The callback is
         * provided a reference to the sandboxed YAHOO object.  This only
         * applies to the script: css can not be sandboxed; css will be
         * loaded into the page normally if specified.
         * @method sandbox
         * @param callback {Function} the callback to exectued when the load is
         *        complete.
         */
        sandbox: function(o, type) {
            // if (o) {
                // YAHOO.log(&quot;sandbox: &quot; + lang.dump(o, 1) + &quot;, &quot; + type);
            // } else {
                // YAHOO.log(&quot;sandbox: &quot; + this.toString() + &quot;, &quot; + type);
            // }

            var self = this,
                success = function(o) {

                    var idx=o.argument[0], name=o.argument[2];

                    // store the response in the position it was requested
                    self._scriptText[idx] = o.responseText;

                    // YAHOO.log(&quot;received: &quot; + o.responseText.substr(0, 100) + &quot;, &quot; + idx);

                    if (self.onProgress) {
                        self.onProgress.call(self.scope, {
                                    name: name,
                                    scriptText: o.responseText,
                                    xhrResponse: o,
                                    data: self.data
                                });
                    }

                    // only generate the sandbox once everything is loaded
                    self._loadCount++;

                    if (self._loadCount &gt;= self._stopCount) {

                        // the variable to find
                        var v = self.varName || &quot;YAHOO&quot;;

                        // wrap the contents of the requested modules in an anonymous function
                        var t = &quot;(function() {\n&quot;;

                        // return the locally scoped reference.
                        var b = &quot;\nreturn &quot; + v + &quot;;\n})();&quot;;

                        var ref = eval(t + self._scriptText.join(&quot;\n&quot;) + b);

                        self._pushEvents(ref);

                        if (ref) {
                            self.onSuccess.call(self.scope, {
                                    reference: ref,
                                    data: self.data
                                });
                        } else {
                            self._onFailure.call(self.varName + &quot; reference failure&quot;);
                        }
                    }
                },

                failure = function(o) {
                    self.onFailure.call(self.scope, {
                            msg: &quot;XHR failure&quot;,
                            xhrResponse: o,
                            data: self.data
                        });
                };

            self._config(o);

            if (!self.onSuccess) {
throw new Error(&quot;You must supply an onSuccess handler for your sandbox&quot;);
            }

            self._sandbox = true;


            // take care of any css first (this can't be sandboxed)
            if (!type || type !== &quot;js&quot;) {
                self._internalCallback = function() {
                            self._internalCallback = null;
                            self.sandbox(null, &quot;js&quot;);
                        };
                self.insert(null, &quot;css&quot;);
                return;
            }

            // get the connection manager if not on the page
            if (!util.Connect) {
                // get a new loader instance to load connection.
                var ld = new YAHOO.util.YUILoader();
                ld.insert({
                    base: self.base,
                    filter: self.filter,
                    require: &quot;connection&quot;,
                    insertBefore: self.insertBefore,
                    charset: self.charset,
                    onSuccess: function() {
                        self.sandbox(null, &quot;js&quot;);
                    },
                    scope: self
                }, &quot;js&quot;);
                return;
            }

            self._scriptText = [];
            self._loadCount = 0;
            self._stopCount = self.sorted.length;
            self._xhr = [];

            self.calculate();

            var s=self.sorted, l=s.length, i, m, url;

            for (i=0; i&lt;l; i=i+1) {
                m = self.moduleInfo[s[i]];

                // undefined modules cause a failure
                if (!m) {
                    self._onFailure(&quot;undefined module &quot; + m);
                    for (var j=0;j&lt;self._xhr.length;j=j+1) {
                        self._xhr[j].abort();
                    }
                    return;
                }

                // css files should be done
                if (m.type !== &quot;js&quot;) {
                    self._loadCount++;
                    continue;
                }

                url = m.fullpath;
                url = (url) ? self._filter(url) : self._url(m.path);

                // YAHOO.log(&quot;xhr request: &quot; + url + &quot;, &quot; + i);

                var xhrData = {
                    success: success,
                    failure: failure,
                    scope: self,
                    // [module index, module name, sandbox name]
                    argument: [i, url, s[i]]
                };

                self._xhr.push(util.Connect.asyncRequest('GET', url, xhrData));
            }
        },

        /**
         * Executed every time a module is loaded, and if we are in a load
         * cycle, we attempt to load the next script.  Public so that it
         * is possible to call this if using a method other than
         * YAHOO.register to determine when scripts are fully loaded
         * @method loadNext
         * @param mname {string} optional the name of the module that has
         * been loaded (which is usually why it is time to load the next
         * one)
         */
        loadNext: function(mname) {

            // It is possible that this function is executed due to something
            // else one the page loading a YUI module.  Only react when we
            // are actively loading something
            if (!this._loading) {
                return;
            }

            var self = this,
                donext = function(o) {
                    self.loadNext(o.data);
                }, successfn, s = this.sorted, len=s.length, i, fn, m, url;


            if (mname) {

                // if the module that was just loaded isn't what we were expecting,
                // continue to wait
                if (mname !== this._loading) {
                    return;
                }

                // YAHOO.log(&quot;loadNext executing, just loaded &quot; + mname);

                // The global handler that is called when each module is loaded
                // will pass that module name to this function.  Storing this
                // data to avoid loading the same module multiple times
                this.inserted[mname] = true;

                if (this.onProgress) {
                    this.onProgress.call(this.scope, {
                            name: mname,
                            data: this.data
                        });
                }
                //var o = this.getProvides(mname);
                //this.inserted = lang.merge(this.inserted, o);
            }


            for (i=0; i&lt;len; i=i+1) {

                // This.inserted keeps track of what the loader has loaded
                if (s[i] in this.inserted) {
                    // YAHOO.log(s[i] + &quot; alread loaded &quot;);
                    continue;
                }

                // Because rollups will cause multiple load notifications
                // from YAHOO, loadNext may be called multiple times for
                // the same module when loading a rollup.  We can safely
                // skip the subsequent requests
                if (s[i] === this._loading) {
                    // YAHOO.log(&quot;still loading &quot; + s[i] + &quot;, waiting&quot;);
                    return;
                }

                // log(&quot;inserting &quot; + s[i]);
                m = this.moduleInfo[s[i]];

                if (!m) {
                    this.onFailure.call(this.scope, {
                            msg: &quot;undefined module &quot; + m,
                            data: this.data
                        });
                    return;
                }

                // The load type is stored to offer the possibility to load
                // the css separately from the script.
                if (!this.loadType || this.loadType === m.type) {

                    successfn = donext;

                    this._loading = s[i];
                    //YAHOO.log(&quot;attempting to load &quot; + s[i] + &quot;, &quot; + this.base);

                    fn = (m.type === &quot;css&quot;) ? util.Get.css : util.Get.script;
                    url = m.fullpath;
                    url = (url) ? this._filter(url) : this._url(m.path);

                    // safari 2.x or lower, script, and part of YUI
                    if (env.ua.webkit &amp;&amp; env.ua.webkit &lt; 420 &amp;&amp; m.type === &quot;js&quot; &amp;&amp;
                          !m.varName) {
                          //YUI.info.moduleInfo[s[i]]) {
                          //YAHOO.log(&quot;using YAHOO env &quot; + s[i] + &quot;, &quot; + m.varName);
                        successfn = null;
                        this._useYahooListener = true;
                    }

                    fn(url, {
                        data: s[i],
                        onSuccess: successfn,
                        onFailure: this._onFailure,
                        onTimeout: this._onTimeout,
                        insertBefore: this.insertBefore,
                        charset: this.charset,
                        timeout: this.timeout,
                        varName: m.varName,
                        scope: self
                    });

                    return;
                }
            }

            // we are finished
            this._loading = null;

            // internal callback for loading css first
            if (this._internalCallback) {
                var f = this._internalCallback;
                this._internalCallback = null;
                f.call(this);
            } else if (this.onSuccess) {
                this._pushEvents();
                this.onSuccess.call(this.scope, {
                        data: this.data
                    });
            }

        },

        /**
         * In IE, the onAvailable/onDOMReady events need help when Event is
         * loaded dynamically
         * @method _pushEvents
         * @param {Function} optional function reference
         * @private
         */
        _pushEvents: function(ref) {
            var r = ref || YAHOO;
            if (r.util &amp;&amp; r.util.Event) {
                r.util.Event._load();
            }
        },

        /**
         * Applies filter
         * method _filter
         * @return {string} the filtered string
         * @private
         */
        _filter: function(str) {
            var f = this.filter;
            return (f) ?  str.replace(new RegExp(f.searchExp, 'g'), f.replaceStr) : str;
        },

        /**
         * Generates the full url for a module
         * method _url
         * @param path {string} the path fragment
         * @return {string} the full url
         * @private
         */
        _url: function(path) {
            return this._filter((this.base || &quot;&quot;) + path);
        }

    };

})();

YAHOO.register(&quot;yuiloader&quot;, YAHOO.util.YUILoader, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
 * Provides methods to parse JSON strings and convert objects to JSON strings.
 *
 * @module json
 * @class JSON
 * @namespace YAHOO.lang
 * @static
 */
(function () {

var l = YAHOO.lang,
    isFunction = l.isFunction,
    isObject   = l.isObject,
    isArray    = l.isArray,
    _toStr     = Object.prototype.toString,
                 // 'this' is the global object.  window in browser env.  Keep
                 // the code env agnostic.  Caja requies window, unfortunately.
    Native     = (YAHOO.env.ua.caja ? window : this).JSON,

/* Variables used by parse */

    /**
     * Replace certain Unicode characters that JavaScript may handle incorrectly
     * during eval--either by deleting them or treating them as line
     * endings--with escape sequences.
     * IMPORTANT NOTE: This regex will be used to modify the input if a match is
     * found.
     *
     * @property _UNICODE_EXCEPTIONS
     * @type {RegExp}
     * @private
     */
    _UNICODE_EXCEPTIONS = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,

    /**
     * First step in the safety evaluation.  Regex used to replace all escape
     * sequences (i.e. &quot;\\&quot;, etc) with '@' characters (a non-JSON character).
     *
     * @property _ESCAPES
     * @type {RegExp}
     * @static
     * @private
     */
    _ESCAPES = /\\(?:[&quot;\\\/bfnrt]|u[0-9a-fA-F]{4})/g,

    /**
     * Second step in the safety evaluation.  Regex used to replace all simple
     * values with ']' characters.
     *
     * @property _VALUES
     * @type {RegExp}
     * @static
     * @private
     */
    _VALUES  = /&quot;[^&quot;\\\n\r]*&quot;|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,

    /**
     * Third step in the safety evaluation.  Regex used to remove all open
     * square brackets following a colon, comma, or at the beginning of the
     * string.
     *
     * @property _BRACKETS
     * @type {RegExp}
     * @static
     * @private
     */
    _BRACKETS = /(?:^|:|,)(?:\s*\[)+/g,

    /**
     * Final step in the safety evaluation.  Regex used to test the string left
     * after all previous replacements for invalid characters.
     *
     * @property _UNSAFE
     * @type {RegExp}
     * @static
     * @private
     */
    _UNSAFE  = /[^\],:{}\s]/,


/* Variables used by stringify */

    /**
     * Regex used to replace special characters in strings for JSON
     * stringification.
     *
     * @property _SPECIAL_CHARS
     * @type {RegExp}
     * @static
     * @private
     */
    _SPECIAL_CHARS = /[\\\&quot;\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,

    /**
     * Character substitution map for common escapes and special characters.
     *
     * @property _CHARS
     * @type {Object}
     * @static
     * @private
     */
    _CHARS = {
        '\b': '\\b',
        '\t': '\\t',
        '\n': '\\n',
        '\f': '\\f',
        '\r': '\\r',
        '&quot;' : '\\&quot;',
        '\\': '\\\\'
    },
    
    UNDEFINED = 'undefined',
    OBJECT    = 'object',
    NULL      = 'null',
    STRING    = 'string',
    NUMBER    = 'number',
    BOOLEAN   = 'boolean',
    DATE      = 'date',
    _allowable = {
        'undefined'        : UNDEFINED,
        'string'           : STRING,
        '[object String]'  : STRING,
        'number'           : NUMBER,
        '[object Number]'  : NUMBER,
        'boolean'          : BOOLEAN,
        '[object Boolean]' : BOOLEAN,
        '[object Date]'    : DATE,
        '[object RegExp]'  : OBJECT
    },
    EMPTY     = '',
    OPEN_O    = '{',
    CLOSE_O   = '}',
    OPEN_A    = '[',
    CLOSE_A   = ']',
    COMMA     = ',',
    COMMA_CR  = &quot;,\n&quot;,
    CR        = &quot;\n&quot;,
    COLON     = ':',
    COLON_SP  = ': ',
    QUOTE     = '&quot;';

// Only accept JSON objects that report a [[Class]] of JSON
Native = _toStr.call(Native) === '[object JSON]' &amp;&amp; Native;

// Escapes a special character to a safe Unicode representation
function _char(c) {
    if (!_CHARS[c]) {
        _CHARS[c] =  '\\u'+('0000'+(+(c.charCodeAt(0))).toString(16)).slice(-4);
    }
    return _CHARS[c];
}


/* functions used by parse */

/**
 * Traverses nested objects, applying a filter or reviver function to
 * each value.  The value returned from the function will replace the
 * original value in the key:value pair.  If the value returned is
 * undefined, the key will be omitted from the returned object.
 *
 * @method _revive
 * @param data {MIXED} Any JavaScript data
 * @param reviver {Function} filter or mutation function
 * @return {MIXED} The results of the filtered/mutated data structure
 * @private
 */
function _revive(data, reviver) {
    var walk = function (o,key) {
        var k,v,value = o[key];
        if (value &amp;&amp; typeof value === 'object') {
            for (k in value) {
                if (l.hasOwnProperty(value,k)) {
                    v = walk(value, k);
                    if (v === undefined) {
                        delete value[k];
                    } else {
                        value[k] = v;
                    }
                }
            }
        }
        return reviver.call(o,key,value);
    };

    return typeof reviver === 'function' ? walk({'':data},'') : data;
}

/**
 * Replace certain Unicode characters that may be handled incorrectly by
 * some browser implementations.
 *
 * @method _prepare
 * @param s {String} parse input
 * @return {String} sanitized JSON string ready to be validated/parsed
 * @private
 */
function _prepare(s) {
    return s.replace(_UNICODE_EXCEPTIONS, _char);
}

function _isSafe(str) {
    return l.isString(str) &amp;&amp;
            !_UNSAFE.test(str.replace(_ESCAPES,'@').
                             replace(_VALUES,']').
                             replace(_BRACKETS,''));
}

function _parse(s,reviver) {
    // sanitize
    s = _prepare(s);

    // Ensure valid JSON
    if (_isSafe(s)) {
        // Eval the text into a JavaScript data structure, apply the
        // reviver function if provided, and return
        return _revive( eval('(' + s + ')'), reviver );
    }

    // The text is not valid JSON
    throw new SyntaxError('JSON.parse');
}


/* functions used by stringify */

// Utility function used to determine how to serialize a variable.
function _type(o) {
    var t = typeof o;
    return  _allowable[t] ||              // number, string, boolean, undefined
            _allowable[_toStr.call(o)] || // Number, String, Boolean, Date
            (t === OBJECT ?
                (o ? OBJECT : NULL) :     // object, array, null, misc natives
                UNDEFINED);               // function, unknown
}

// Enclose escaped strings in quotes
function _string(s) {
    return QUOTE + s.replace(_SPECIAL_CHARS, _char) + QUOTE;
}

// Adds the provided space to the beginning of every line in the input string
function _indent(s,space) {
    return s.replace(/^/gm, space);
}

// JavaScript implementation of stringify (see API declaration of stringify)
function _stringify(o,w,space) {
    if (o === undefined) {
        return undefined;
    }

    var replacer = isFunction(w) ? w : null,
        format   = _toStr.call(space).match(/String|Number/) || [],
        _date    = YAHOO.lang.JSON.dateToString,
        stack    = [],
        tmp,i,len;

    if (replacer || !isArray(w)) {
        w = undefined;
    }

    // Ensure whitelist keys are unique (bug 2110391)
    if (w) {
        tmp = {};
        for (i = 0, len = w.length; i &lt; len; ++i) {
            tmp[w[i]] = true;
        }
        w = tmp;
    }

    // Per the spec, strings are truncated to 10 characters and numbers
    // are converted to that number of spaces (max 10)
    space = format[0] === 'Number' ?
                new Array(Math.min(Math.max(0,space),10)+1).join(&quot; &quot;) :
                (space || EMPTY).slice(0,10);

    function _serialize(h,key) {
        var value = h[key],
            t     = _type(value),
            a     = [],
            colon = space ? COLON_SP : COLON,
            arr, i, keys, k, v;

        // Per the ECMA 5 spec, toJSON is applied before the replacer is
        // called.  Also per the spec, Date.prototype.toJSON has been added, so
        // Date instances should be serialized prior to exposure to the
        // replacer.  I disagree with this decision, but the spec is the spec.
        if (isObject(value) &amp;&amp; isFunction(value.toJSON)) {
            value = value.toJSON(key);
        } else if (t === DATE) {
            value = _date(value);
        }

        if (isFunction(replacer)) {
            value = replacer.call(h,key,value);
        }

        if (value !== h[key]) {
            t = _type(value);
        }

        switch (t) {
            case DATE    : // intentional fallthrough.  Pre-replacer Dates are
                           // serialized in the toJSON stage.  Dates here would
                           // have been produced by the replacer.
            case OBJECT  : break;
            case STRING  : return _string(value);
            case NUMBER  : return isFinite(value) ? value+EMPTY : NULL;
            case BOOLEAN : return value+EMPTY;
            case NULL    : return NULL;
            default      : return undefined;
        }

        // Check for cyclical references in nested objects
        for (i = stack.length - 1; i &gt;= 0; --i) {
            if (stack[i] === value) {
                throw new Error(&quot;JSON.stringify. Cyclical reference&quot;);
            }
        }

        arr = isArray(value);

        // Add the object to the processing stack
        stack.push(value);

        if (arr) { // Array
            for (i = value.length - 1; i &gt;= 0; --i) {
                a[i] = _serialize(value, i) || NULL;
            }
        } else {   // Object
            // If whitelist provided, take only those keys
            keys = w || value;
            i = 0;

            for (k in keys) {
                if (l.hasOwnProperty(keys, k)) {
                    v = _serialize(value, k);
                    if (v) {
                        a[i++] = _string(k) + colon + v;
                    }
                }
            }
        }

        // remove the array from the stack
        stack.pop();

        if (space &amp;&amp; a.length) {
            return arr ?
                OPEN_A + CR + _indent(a.join(COMMA_CR), space) + CR + CLOSE_A :
                OPEN_O + CR + _indent(a.join(COMMA_CR), space) + CR + CLOSE_O;
        } else {
            return arr ?
                OPEN_A + a.join(COMMA) + CLOSE_A :
                OPEN_O + a.join(COMMA) + CLOSE_O;
        }
    }

    // process the input
    return _serialize({'':o},'');
}


/* Public API */
YAHOO.lang.JSON = {
    /**
     * Leverage native JSON parse if the browser has a native implementation.
     * In general, this is a good idea.  See the Known Issues section in the
     * JSON user guide for caveats.  The default value is true for browsers with
     * native JSON support.
     *
     * @property useNativeParse
     * @type Boolean
     * @default true
     * @static
     */
    useNativeParse : !!Native,

    /**
     * Leverage native JSON stringify if the browser has a native
     * implementation.  In general, this is a good idea.  See the Known Issues
     * section in the JSON user guide for caveats.  The default value is true
     * for browsers with native JSON support.
     *
     * @property useNativeStringify
     * @type Boolean
     * @default true
     * @static
     */
    useNativeStringify : !!Native,

    /**
     * Four step determination whether a string is safe to eval. In three steps,
     * escape sequences, safe values, and properly placed open square brackets
     * are replaced with placeholders or removed.  Then in the final step, the
     * result of all these replacements is checked for invalid characters.
     *
     * @method isSafe
     * @param str {String} JSON string to be tested
     * @return {boolean} is the string safe for eval?
     * @static
     */
    isSafe : function (s) {
        return _isSafe(_prepare(s));
    },

    /**
     * &lt;p&gt;Parse a JSON string, returning the native JavaScript
     * representation.&lt;/p&gt;
     *
     * &lt;p&gt;When lang.JSON.useNativeParse is true, this will defer to the native
     * JSON.parse if the browser has a native implementation.  Otherwise, a
     * JavaScript implementation based on http://www.json.org/json2.js
     * is used.&lt;/p&gt;
     *
     * @method parse
     * @param s {string} JSON string data
     * @param reviver {function} (optional) function(k,v) passed each key:value
     *          pair of object literals, allowing pruning or altering values
     * @return {MIXED} the native JavaScript representation of the JSON string
     * @throws SyntaxError
     * @static
     */
    parse : function (s,reviver) {
        if (typeof s !== 'string') {
            s += '';
        }

        return Native &amp;&amp; YAHOO.lang.JSON.useNativeParse ?
            Native.parse(s,reviver) : _parse(s,reviver);
    },

    /**
     * &lt;p&gt;Converts an arbitrary value to a JSON string representation.&lt;/p&gt;
     *
     * &lt;p&gt;Objects with cyclical references will trigger an exception.&lt;/p&gt;
     *
     * &lt;p&gt;If a whitelist is provided, only matching object keys will be
     * included.  Alternately, a replacer function may be passed as the
     * second parameter.  This function is executed on every value in the
     * input, and its return value will be used in place of the original value.
     * This is useful to serialize specialized objects or class instances.&lt;/p&gt;
     *
     * &lt;p&gt;If a positive integer or non-empty string is passed as the third
     * parameter, the output will be formatted with carriage returns and
     * indentation for readability.  If a String is passed (such as &quot;\t&quot;) it
     * will be used once for each indentation level.  If a number is passed,
     * that number of spaces will be used.&lt;/p&gt;
     *
     * &lt;p&gt;When lang.JSON.useNativeStringify is true, this will defer to the
     * native JSON.stringify if the browser has a native implementation.
     * Otherwise, a JavaScript implementation is used.&lt;/p&gt;
     *
     * @method stringify
     * @param o {MIXED} any arbitrary object to convert to JSON string
     * @param w {Array|Function} (optional) whitelist of acceptable object keys
     *                  to include OR a function(value,key) to alter values
     *                  before serialization
     * @param space {Number|String} (optional) indentation character(s) or
     *                  depthy of spaces to format the output 
     * @return {string} JSON string representation of the input
     * @throws Error
     * @static
     */
    stringify : function (o,w,space) {
        return Native &amp;&amp; YAHOO.lang.JSON.useNativeStringify ?
            Native.stringify(o,w,space) : _stringify(o,w,space);
    },

    /**
     * Serializes a Date instance as a UTC date string.  Used internally by
     * the JavaScript implementation of stringify.  If you need a different
     * Date serialization format, override this method.  If you change this,
     * you should also set useNativeStringify to false, since native JSON
     * implementations serialize Dates per the ECMAScript 5 spec.  You've been
     * warned.
     *
     * @method dateToString
     * @param d {Date} The Date to serialize
     * @return {String} stringified Date in UTC format YYYY-MM-DDTHH:mm:SSZ
     * @static
     */
    dateToString : function (d) {
        function _zeroPad(v) {
            return v &lt; 10 ? '0' + v : v;
        }

        return d.getUTCFullYear()         + '-' +
            _zeroPad(d.getUTCMonth() + 1) + '-' +
            _zeroPad(d.getUTCDate())      + 'T' +
            _zeroPad(d.getUTCHours())     + COLON +
            _zeroPad(d.getUTCMinutes())   + COLON +
            _zeroPad(d.getUTCSeconds())   + 'Z';
    },

    /**
     * Reconstitute Date instances from the default JSON UTC serialization.
     * Reference this from a reviver function to rebuild Dates during the
     * parse operation.
     *
     * @method stringToDate
     * @param str {String} String serialization of a Date
     * @return {Date}
     */
    stringToDate : function (str) {
        var m = str.match(/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(?:\.(\d{3}))?Z$/);
        if (m) {
            var d = new Date();
            d.setUTCFullYear(m[1], m[2]-1, m[3]);
            d.setUTCHours(m[4], m[5], m[6], (m[7] || 0));
            return d;
        }
        return str;
    }
};

/**
 * &lt;p&gt;Four step determination whether a string is safe to eval. In three steps,
 * escape sequences, safe values, and properly placed open square brackets
 * are replaced with placeholders or removed.  Then in the final step, the
 * result of all these replacements is checked for invalid characters.&lt;/p&gt;
 *
 * &lt;p&gt;This is an alias for isSafe.&lt;/p&gt;
 *
 * @method isValid
 * @param str {String} JSON string to be tested
 * @return {boolean} is the string safe for eval?
 * @static
 * @deprecated use isSafe
 */
YAHOO.lang.JSON.isValid = YAHOO.lang.JSON.isSafe;

})();
YAHOO.register(&quot;json&quot;, YAHOO.lang.JSON, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
(function () {

    /**
    * Config is a utility used within an Object to allow the implementer to
    * maintain a list of local configuration properties and listen for changes
    * to those properties dynamically using CustomEvent. The initial values are
    * also maintained so that the configuration can be reset at any given point
    * to its initial state.
    * @namespace YAHOO.util
    * @class Config
    * @constructor
    * @param {Object} owner The owner Object to which this Config Object belongs
    */
    YAHOO.util.Config = function (owner) {

        if (owner) {
            this.init(owner);
        }

        if (!owner) {  YAHOO.log(&quot;No owner specified for Config object&quot;, &quot;error&quot;, &quot;Config&quot;); }

    };


    var Lang = YAHOO.lang,
        CustomEvent = YAHOO.util.CustomEvent,
        Config = YAHOO.util.Config;


    /**
     * Constant representing the CustomEvent type for the config changed event.
     * @property YAHOO.util.Config.CONFIG_CHANGED_EVENT
     * @private
     * @static
     * @final
     */
    Config.CONFIG_CHANGED_EVENT = &quot;configChanged&quot;;

    /**
     * Constant representing the boolean type string
     * @property YAHOO.util.Config.BOOLEAN_TYPE
     * @private
     * @static
     * @final
     */
    Config.BOOLEAN_TYPE = &quot;boolean&quot;;

    Config.prototype = {

        /**
        * Object reference to the owner of this Config Object
        * @property owner
        * @type Object
        */
        owner: null,

        /**
        * Boolean flag that specifies whether a queue is currently
        * being executed
        * @property queueInProgress
        * @type Boolean
        */
        queueInProgress: false,

        /**
        * Maintains the local collection of configuration property objects and
        * their specified values
        * @property config
        * @private
        * @type Object
        */
        config: null,

        /**
        * Maintains the local collection of configuration property objects as
        * they were initially applied.
        * This object is used when resetting a property.
        * @property initialConfig
        * @private
        * @type Object
        */
        initialConfig: null,

        /**
        * Maintains the local, normalized CustomEvent queue
        * @property eventQueue
        * @private
        * @type Object
        */
        eventQueue: null,

        /**
        * Custom Event, notifying subscribers when Config properties are set
        * (setProperty is called without the silent flag
        * @event configChangedEvent
        */
        configChangedEvent: null,

        /**
        * Initializes the configuration Object and all of its local members.
        * @method init
        * @param {Object} owner The owner Object to which this Config
        * Object belongs
        */
        init: function (owner) {

            this.owner = owner;

            this.configChangedEvent =
                this.createEvent(Config.CONFIG_CHANGED_EVENT);

            this.configChangedEvent.signature = CustomEvent.LIST;
            this.queueInProgress = false;
            this.config = {};
            this.initialConfig = {};
            this.eventQueue = [];

        },

        /**
        * Validates that the value passed in is a Boolean.
        * @method checkBoolean
        * @param {Object} val The value to validate
        * @return {Boolean} true, if the value is valid
        */
        checkBoolean: function (val) {
            return (typeof val == Config.BOOLEAN_TYPE);
        },

        /**
        * Validates that the value passed in is a number.
        * @method checkNumber
        * @param {Object} val The value to validate
        * @return {Boolean} true, if the value is valid
        */
        checkNumber: function (val) {
            return (!isNaN(val));
        },

        /**
        * Fires a configuration property event using the specified value.
        * @method fireEvent
        * @private
        * @param {String} key The configuration property's name
        * @param {value} Object The value of the correct type for the property
        */
        fireEvent: function ( key, value ) {
            YAHOO.log(&quot;Firing Config event: &quot; + key + &quot;=&quot; + value, &quot;info&quot;, &quot;Config&quot;);
            var property = this.config[key];

            if (property &amp;&amp; property.event) {
                property.event.fire(value);
            }
        },

        /**
        * Adds a property to the Config Object's private config hash.
        * @method addProperty
        * @param {String} key The configuration property's name
        * @param {Object} propertyObject The Object containing all of this
        * property's arguments
        */
        addProperty: function ( key, propertyObject ) {
            key = key.toLowerCase();
            YAHOO.log(&quot;Added property: &quot; + key, &quot;info&quot;, &quot;Config&quot;);

            this.config[key] = propertyObject;

            propertyObject.event = this.createEvent(key, { scope: this.owner });
            propertyObject.event.signature = CustomEvent.LIST;


            propertyObject.key = key;

            if (propertyObject.handler) {
                propertyObject.event.subscribe(propertyObject.handler,
                    this.owner);
            }

            this.setProperty(key, propertyObject.value, true);

            if (! propertyObject.suppressEvent) {
                this.queueProperty(key, propertyObject.value);
            }

        },

        /**
        * Returns a key-value configuration map of the values currently set in
        * the Config Object.
        * @method getConfig
        * @return {Object} The current config, represented in a key-value map
        */
        getConfig: function () {

            var cfg = {},
                currCfg = this.config,
                prop,
                property;

            for (prop in currCfg) {
                if (Lang.hasOwnProperty(currCfg, prop)) {
                    property = currCfg[prop];
                    if (property &amp;&amp; property.event) {
                        cfg[prop] = property.value;
                    }
                }
            }

            return cfg;
        },

        /**
        * Returns the value of specified property.
        * @method getProperty
        * @param {String} key The name of the property
        * @return {Object}  The value of the specified property
        */
        getProperty: function (key) {
            var property = this.config[key.toLowerCase()];
            if (property &amp;&amp; property.event) {
                return property.value;
            } else {
                return undefined;
            }
        },

        /**
        * Resets the specified property's value to its initial value.
        * @method resetProperty
        * @param {String} key The name of the property
        * @return {Boolean} True is the property was reset, false if not
        */
        resetProperty: function (key) {
            key = key.toLowerCase();

            var property = this.config[key];

            if (property &amp;&amp; property.event) {
                if (key in this.initialConfig) {
                    this.setProperty(key, this.initialConfig[key]);
                    return true;
                }
            } else {
                return false;
            }
        },

        /**
        * Sets the value of a property. If the silent property is passed as
        * true, the property's event will not be fired.
        * @method setProperty
        * @param {String} key The name of the property
        * @param {String} value The value to set the property to
        * @param {Boolean} silent Whether the value should be set silently,
        * without firing the property event.
        * @return {Boolean} True, if the set was successful, false if it failed.
        */
        setProperty: function (key, value, silent) {

            var property;

            key = key.toLowerCase();
            YAHOO.log(&quot;setProperty: &quot; + key + &quot;=&quot; + value, &quot;info&quot;, &quot;Config&quot;);

            if (this.queueInProgress &amp;&amp; ! silent) {
                // Currently running through a queue...
                this.queueProperty(key,value);
                return true;

            } else {
                property = this.config[key];
                if (property &amp;&amp; property.event) {
                    if (property.validator &amp;&amp; !property.validator(value)) {
                        return false;
                    } else {
                        property.value = value;
                        if (! silent) {
                            this.fireEvent(key, value);
                            this.configChangedEvent.fire([key, value]);
                        }
                        return true;
                    }
                } else {
                    return false;
                }
            }
        },

        /**
        * Sets the value of a property and queues its event to execute. If the
        * event is already scheduled to execute, it is
        * moved from its current position to the end of the queue.
        * @method queueProperty
        * @param {String} key The name of the property
        * @param {String} value The value to set the property to
        * @return {Boolean}  true, if the set was successful, false if
        * it failed.
        */
        queueProperty: function (key, value) {

            key = key.toLowerCase();
            YAHOO.log(&quot;queueProperty: &quot; + key + &quot;=&quot; + value, &quot;info&quot;, &quot;Config&quot;);

            var property = this.config[key],
                foundDuplicate = false,
                iLen,
                queueItem,
                queueItemKey,
                queueItemValue,
                sLen,
                supercedesCheck,
                qLen,
                queueItemCheck,
                queueItemCheckKey,
                queueItemCheckValue,
                i,
                s,
                q;

            if (property &amp;&amp; property.event) {

                if (!Lang.isUndefined(value) &amp;&amp; property.validator &amp;&amp;
                    !property.validator(value)) { // validator
                    return false;
                } else {

                    if (!Lang.isUndefined(value)) {
                        property.value = value;
                    } else {
                        value = property.value;
                    }

                    foundDuplicate = false;
                    iLen = this.eventQueue.length;

                    for (i = 0; i &lt; iLen; i++) {
                        queueItem = this.eventQueue[i];

                        if (queueItem) {
                            queueItemKey = queueItem[0];
                            queueItemValue = queueItem[1];

                            if (queueItemKey == key) {

                                /*
                                    found a dupe... push to end of queue, null
                                    current item, and break
                                */

                                this.eventQueue[i] = null;

                                this.eventQueue.push(
                                    [key, (!Lang.isUndefined(value) ?
                                    value : queueItemValue)]);

                                foundDuplicate = true;
                                break;
                            }
                        }
                    }

                    // this is a refire, or a new property in the queue

                    if (! foundDuplicate &amp;&amp; !Lang.isUndefined(value)) {
                        this.eventQueue.push([key, value]);
                    }
                }

                if (property.supercedes) {

                    sLen = property.supercedes.length;

                    for (s = 0; s &lt; sLen; s++) {

                        supercedesCheck = property.supercedes[s];
                        qLen = this.eventQueue.length;

                        for (q = 0; q &lt; qLen; q++) {
                            queueItemCheck = this.eventQueue[q];

                            if (queueItemCheck) {
                                queueItemCheckKey = queueItemCheck[0];
                                queueItemCheckValue = queueItemCheck[1];

                                if (queueItemCheckKey ==
                                    supercedesCheck.toLowerCase() ) {

                                    this.eventQueue.push([queueItemCheckKey,
                                        queueItemCheckValue]);

                                    this.eventQueue[q] = null;
                                    break;

                                }
                            }
                        }
                    }
                }

                YAHOO.log(&quot;Config event queue: &quot; + this.outputEventQueue(), &quot;info&quot;, &quot;Config&quot;);

                return true;
            } else {
                return false;
            }
        },

        /**
        * Fires the event for a property using the property's current value.
        * @method refireEvent
        * @param {String} key The name of the property
        */
        refireEvent: function (key) {

            key = key.toLowerCase();

            var property = this.config[key];

            if (property &amp;&amp; property.event &amp;&amp;

                !Lang.isUndefined(property.value)) {

                if (this.queueInProgress) {

                    this.queueProperty(key);

                } else {

                    this.fireEvent(key, property.value);

                }

            }
        },

        /**
        * Applies a key-value Object literal to the configuration, replacing
        * any existing values, and queueing the property events.
        * Although the values will be set, fireQueue() must be called for their
        * associated events to execute.
        * @method applyConfig
        * @param {Object} userConfig The configuration Object literal
        * @param {Boolean} init  When set to true, the initialConfig will
        * be set to the userConfig passed in, so that calling a reset will
        * reset the properties to the passed values.
        */
        applyConfig: function (userConfig, init) {

            var sKey,
                oConfig;

            if (init) {
                oConfig = {};
                for (sKey in userConfig) {
                    if (Lang.hasOwnProperty(userConfig, sKey)) {
                        oConfig[sKey.toLowerCase()] = userConfig[sKey];
                    }
                }
                this.initialConfig = oConfig;
            }

            for (sKey in userConfig) {
                if (Lang.hasOwnProperty(userConfig, sKey)) {
                    this.queueProperty(sKey, userConfig[sKey]);
                }
            }
        },

        /**
        * Refires the events for all configuration properties using their
        * current values.
        * @method refresh
        */
        refresh: function () {

            var prop;

            for (prop in this.config) {
                if (Lang.hasOwnProperty(this.config, prop)) {
                    this.refireEvent(prop);
                }
            }
        },

        /**
        * Fires the normalized list of queued property change events
        * @method fireQueue
        */
        fireQueue: function () {

            var i,
                queueItem,
                key,
                value,
                property;

            this.queueInProgress = true;
            for (i = 0;i &lt; this.eventQueue.length; i++) {
                queueItem = this.eventQueue[i];
                if (queueItem) {

                    key = queueItem[0];
                    value = queueItem[1];
                    property = this.config[key];

                    property.value = value;

                    // Clear out queue entry, to avoid it being
                    // re-added to the queue by any queueProperty/supercedes
                    // calls which are invoked during fireEvent
                    this.eventQueue[i] = null;

                    this.fireEvent(key,value);
                }
            }

            this.queueInProgress = false;
            this.eventQueue = [];
        },

        /**
        * Subscribes an external handler to the change event for any
        * given property.
        * @method subscribeToConfigEvent
        * @param {String} key The property name
        * @param {Function} handler The handler function to use subscribe to
        * the property's event
        * @param {Object} obj The Object to use for scoping the event handler
        * (see CustomEvent documentation)
        * @param {Boolean} overrideContext Optional. If true, will override
        * &quot;this&quot; within the handler to map to the scope Object passed into the
        * method.
        * @return {Boolean} True, if the subscription was successful,
        * otherwise false.
        */
        subscribeToConfigEvent: function (key, handler, obj, overrideContext) {

            var property = this.config[key.toLowerCase()];

            if (property &amp;&amp; property.event) {
                if (!Config.alreadySubscribed(property.event, handler, obj)) {
                    property.event.subscribe(handler, obj, overrideContext);
                }
                return true;
            } else {
                return false;
            }

        },

        /**
        * Unsubscribes an external handler from the change event for any
        * given property.
        * @method unsubscribeFromConfigEvent
        * @param {String} key The property name
        * @param {Function} handler The handler function to use subscribe to
        * the property's event
        * @param {Object} obj The Object to use for scoping the event
        * handler (see CustomEvent documentation)
        * @return {Boolean} True, if the unsubscription was successful,
        * otherwise false.
        */
        unsubscribeFromConfigEvent: function (key, handler, obj) {
            var property = this.config[key.toLowerCase()];
            if (property &amp;&amp; property.event) {
                return property.event.unsubscribe(handler, obj);
            } else {
                return false;
            }
        },

        /**
        * Returns a string representation of the Config object
        * @method toString
        * @return {String} The Config object in string format.
        */
        toString: function () {
            var output = &quot;Config&quot;;
            if (this.owner) {
                output += &quot; [&quot; + this.owner.toString() + &quot;]&quot;;
            }
            return output;
        },

        /**
        * Returns a string representation of the Config object's current
        * CustomEvent queue
        * @method outputEventQueue
        * @return {String} The string list of CustomEvents currently queued
        * for execution
        */
        outputEventQueue: function () {

            var output = &quot;&quot;,
                queueItem,
                q,
                nQueue = this.eventQueue.length;

            for (q = 0; q &lt; nQueue; q++) {
                queueItem = this.eventQueue[q];
                if (queueItem) {
                    output += queueItem[0] + &quot;=&quot; + queueItem[1] + &quot;, &quot;;
                }
            }
            return output;
        },

        /**
        * Sets all properties to null, unsubscribes all listeners from each
        * property's change event and all listeners from the configChangedEvent.
        * @method destroy
        */
        destroy: function () {

            var oConfig = this.config,
                sProperty,
                oProperty;


            for (sProperty in oConfig) {

                if (Lang.hasOwnProperty(oConfig, sProperty)) {

                    oProperty = oConfig[sProperty];

                    oProperty.event.unsubscribeAll();
                    oProperty.event = null;

                }

            }

            this.configChangedEvent.unsubscribeAll();

            this.configChangedEvent = null;
            this.owner = null;
            this.config = null;
            this.initialConfig = null;
            this.eventQueue = null;

        }

    };


    /**
    * Checks to determine if a particular function/Object pair are already
    * subscribed to the specified CustomEvent
    * @method YAHOO.util.Config.alreadySubscribed
    * @static
    * @param {YAHOO.util.CustomEvent} evt The CustomEvent for which to check
    * the subscriptions
    * @param {Function} fn The function to look for in the subscribers list
    * @param {Object} obj The execution scope Object for the subscription
    * @return {Boolean} true, if the function/Object pair is already subscribed
    * to the CustomEvent passed in
    */
    Config.alreadySubscribed = function (evt, fn, obj) {

        var nSubscribers = evt.subscribers.length,
            subsc,
            i;

        if (nSubscribers &gt; 0) {
            i = nSubscribers - 1;
            do {
                subsc = evt.subscribers[i];
                if (subsc &amp;&amp; subsc.obj == obj &amp;&amp; subsc.fn == fn) {
                    return true;
                }
            }
            while (i--);
        }

        return false;

    };

    YAHOO.lang.augmentProto(Config, YAHOO.util.EventProvider);

}());
(function () {

    /**
    * The Container family of components is designed to enable developers to
    * create different kinds of content-containing modules on the web. Module
    * and Overlay are the most basic containers, and they can be used directly
    * or extended to build custom containers. Also part of the Container family
    * are four UI controls that extend Module and Overlay: Tooltip, Panel,
    * Dialog, and SimpleDialog.
    * @module container
    * @title Container
    * @requires yahoo, dom, event
    * @optional dragdrop, animation, button
    */

    /**
    * Module is a JavaScript representation of the Standard Module Format.
    * Standard Module Format is a simple standard for markup containers where
    * child nodes representing the header, body, and footer of the content are
    * denoted using the CSS classes &quot;hd&quot;, &quot;bd&quot;, and &quot;ft&quot; respectively.
    * Module is the base class for all other classes in the YUI
    * Container package.
    * @namespace YAHOO.widget
    * @class Module
    * @constructor
    * @param {String} el The element ID representing the Module &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the Module
    * @param {Object} userConfig The configuration Object literal containing
    * the configuration that should be set for this module. See configuration
    * documentation for more details.
    */
    YAHOO.widget.Module = function (el, userConfig) {
        if (el) {
            this.init(el, userConfig);
        } else {
            YAHOO.log(&quot;No element or element ID specified&quot; +
                &quot; for Module instantiation&quot;, &quot;error&quot;);
        }
    };

    var Dom = YAHOO.util.Dom,
        Config = YAHOO.util.Config,
        Event = YAHOO.util.Event,
        CustomEvent = YAHOO.util.CustomEvent,
        Module = YAHOO.widget.Module,
        UA = YAHOO.env.ua,

        m_oModuleTemplate,
        m_oHeaderTemplate,
        m_oBodyTemplate,
        m_oFooterTemplate,

        /**
        * Constant representing the name of the Module's events
        * @property EVENT_TYPES
        * @private
        * @final
        * @type Object
        */
        EVENT_TYPES = {
            &quot;BEFORE_INIT&quot;: &quot;beforeInit&quot;,
            &quot;INIT&quot;: &quot;init&quot;,
            &quot;APPEND&quot;: &quot;append&quot;,
            &quot;BEFORE_RENDER&quot;: &quot;beforeRender&quot;,
            &quot;RENDER&quot;: &quot;render&quot;,
            &quot;CHANGE_HEADER&quot;: &quot;changeHeader&quot;,
            &quot;CHANGE_BODY&quot;: &quot;changeBody&quot;,
            &quot;CHANGE_FOOTER&quot;: &quot;changeFooter&quot;,
            &quot;CHANGE_CONTENT&quot;: &quot;changeContent&quot;,
            &quot;DESTROY&quot;: &quot;destroy&quot;,
            &quot;BEFORE_SHOW&quot;: &quot;beforeShow&quot;,
            &quot;SHOW&quot;: &quot;show&quot;,
            &quot;BEFORE_HIDE&quot;: &quot;beforeHide&quot;,
            &quot;HIDE&quot;: &quot;hide&quot;
        },

        /**
        * Constant representing the Module's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;VISIBLE&quot;: {
                key: &quot;visible&quot;,
                value: true,
                validator: YAHOO.lang.isBoolean
            },

            &quot;EFFECT&quot;: {
                key: &quot;effect&quot;,
                suppressEvent: true,
                supercedes: [&quot;visible&quot;]
            },

            &quot;MONITOR_RESIZE&quot;: {
                key: &quot;monitorresize&quot;,
                value: true
            },

            &quot;APPEND_TO_DOCUMENT_BODY&quot;: {
                key: &quot;appendtodocumentbody&quot;,
                value: false
            }
        };

    /**
    * Constant representing the prefix path to use for non-secure images
    * @property YAHOO.widget.Module.IMG_ROOT
    * @static
    * @final
    * @type String
    */
    Module.IMG_ROOT = null;

    /**
    * Constant representing the prefix path to use for securely served images
    * @property YAHOO.widget.Module.IMG_ROOT_SSL
    * @static
    * @final
    * @type String
    */
    Module.IMG_ROOT_SSL = null;

    /**
    * Constant for the default CSS class name that represents a Module
    * @property YAHOO.widget.Module.CSS_MODULE
    * @static
    * @final
    * @type String
    */
    Module.CSS_MODULE = &quot;yui-module&quot;;

    /**
    * CSS classname representing the module header. NOTE: The classname is inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
    * @property YAHOO.widget.Module.CSS_HEADER
    * @static
    * @final
    * @type String
    */
    Module.CSS_HEADER = &quot;hd&quot;;

    /**
    * CSS classname representing the module body. NOTE: The classname is inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
    * @property YAHOO.widget.Module.CSS_BODY
    * @static
    * @final
    * @type String
    */
    Module.CSS_BODY = &quot;bd&quot;;

    /**
    * CSS classname representing the module footer. NOTE: The classname is inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
    * @property YAHOO.widget.Module.CSS_FOOTER
    * @static
    * @final
    * @type String
    */
    Module.CSS_FOOTER = &quot;ft&quot;;

    /**
    * Constant representing the url for the &quot;src&quot; attribute of the iframe
    * used to monitor changes to the browser's base font size
    * @property YAHOO.widget.Module.RESIZE_MONITOR_SECURE_URL
    * @static
    * @final
    * @type String
    */
    Module.RESIZE_MONITOR_SECURE_URL = &quot;javascript:false;&quot;;

    /**
    * Constant representing the buffer amount (in pixels) to use when positioning
    * the text resize monitor offscreen. The resize monitor is positioned
    * offscreen by an amount eqaul to its offsetHeight + the buffer value.
    *
    * @property YAHOO.widget.Module.RESIZE_MONITOR_BUFFER
    * @static
    * @type Number
    */
    // Set to 1, to work around pixel offset in IE8, which increases when zoom is used
    Module.RESIZE_MONITOR_BUFFER = 1;

    /**
    * Singleton CustomEvent fired when the font size is changed in the browser.
    * Opera's &quot;zoom&quot; functionality currently does not support text
    * size detection.
    * @event YAHOO.widget.Module.textResizeEvent
    */
    Module.textResizeEvent = new CustomEvent(&quot;textResize&quot;);

    /**
     * Helper utility method, which forces a document level
     * redraw for Opera, which can help remove repaint
     * irregularities after applying DOM changes.
     *
     * @method YAHOO.widget.Module.forceDocumentRedraw
     * @static
     */
    Module.forceDocumentRedraw = function() {
        var docEl = document.documentElement;
        if (docEl) {
            docEl.className += &quot; &quot;;
            docEl.className = YAHOO.lang.trim(docEl.className);
        }
    };

    function createModuleTemplate() {

        if (!m_oModuleTemplate) {
            m_oModuleTemplate = document.createElement(&quot;div&quot;);

            m_oModuleTemplate.innerHTML = (&quot;&lt;div class=\&quot;&quot; +
                Module.CSS_HEADER + &quot;\&quot;&gt;&lt;/div&gt;&quot; + &quot;&lt;div class=\&quot;&quot; +
                Module.CSS_BODY + &quot;\&quot;&gt;&lt;/div&gt;&lt;div class=\&quot;&quot; +
                Module.CSS_FOOTER + &quot;\&quot;&gt;&lt;/div&gt;&quot;);

            m_oHeaderTemplate = m_oModuleTemplate.firstChild;
            m_oBodyTemplate = m_oHeaderTemplate.nextSibling;
            m_oFooterTemplate = m_oBodyTemplate.nextSibling;
        }

        return m_oModuleTemplate;
    }

    function createHeader() {
        if (!m_oHeaderTemplate) {
            createModuleTemplate();
        }
        return (m_oHeaderTemplate.cloneNode(false));
    }

    function createBody() {
        if (!m_oBodyTemplate) {
            createModuleTemplate();
        }
        return (m_oBodyTemplate.cloneNode(false));
    }

    function createFooter() {
        if (!m_oFooterTemplate) {
            createModuleTemplate();
        }
        return (m_oFooterTemplate.cloneNode(false));
    }

    Module.prototype = {

        /**
        * The class's constructor function
        * @property contructor
        * @type Function
        */
        constructor: Module,

        /**
        * The main module element that contains the header, body, and footer
        * @property element
        * @type HTMLElement
        */
        element: null,

        /**
        * The header element, denoted with CSS class &quot;hd&quot;
        * @property header
        * @type HTMLElement
        */
        header: null,

        /**
        * The body element, denoted with CSS class &quot;bd&quot;
        * @property body
        * @type HTMLElement
        */
        body: null,

        /**
        * The footer element, denoted with CSS class &quot;ft&quot;
        * @property footer
        * @type HTMLElement
        */
        footer: null,

        /**
        * The id of the element
        * @property id
        * @type String
        */
        id: null,

        /**
        * A string representing the root path for all images created by
        * a Module instance.
        * @deprecated It is recommend that any images for a Module be applied
        * via CSS using the &quot;background-image&quot; property.
        * @property imageRoot
        * @type String
        */
        imageRoot: Module.IMG_ROOT,

        /**
        * Initializes the custom events for Module which are fired
        * automatically at appropriate times by the Module class.
        * @method initEvents
        */
        initEvents: function () {

            var SIGNATURE = CustomEvent.LIST;

            /**
            * CustomEvent fired prior to class initalization.
            * @event beforeInitEvent
            * @param {class} classRef class reference of the initializing
            * class, such as this.beforeInitEvent.fire(Module)
            */
            this.beforeInitEvent = this.createEvent(EVENT_TYPES.BEFORE_INIT);
            this.beforeInitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after class initalization.
            * @event initEvent
            * @param {class} classRef class reference of the initializing
            * class, such as this.beforeInitEvent.fire(Module)
            */
            this.initEvent = this.createEvent(EVENT_TYPES.INIT);
            this.initEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the Module is appended to the DOM
            * @event appendEvent
            */
            this.appendEvent = this.createEvent(EVENT_TYPES.APPEND);
            this.appendEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired before the Module is rendered
            * @event beforeRenderEvent
            */
            this.beforeRenderEvent = this.createEvent(EVENT_TYPES.BEFORE_RENDER);
            this.beforeRenderEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after the Module is rendered
            * @event renderEvent
            */
            this.renderEvent = this.createEvent(EVENT_TYPES.RENDER);
            this.renderEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the header content of the Module
            * is modified
            * @event changeHeaderEvent
            * @param {String/HTMLElement} content String/element representing
            * the new header content
            */
            this.changeHeaderEvent = this.createEvent(EVENT_TYPES.CHANGE_HEADER);
            this.changeHeaderEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the body content of the Module is modified
            * @event changeBodyEvent
            * @param {String/HTMLElement} content String/element representing
            * the new body content
            */
            this.changeBodyEvent = this.createEvent(EVENT_TYPES.CHANGE_BODY);
            this.changeBodyEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the footer content of the Module
            * is modified
            * @event changeFooterEvent
            * @param {String/HTMLElement} content String/element representing
            * the new footer content
            */
            this.changeFooterEvent = this.createEvent(EVENT_TYPES.CHANGE_FOOTER);
            this.changeFooterEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the content of the Module is modified
            * @event changeContentEvent
            */
            this.changeContentEvent = this.createEvent(EVENT_TYPES.CHANGE_CONTENT);
            this.changeContentEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the Module is destroyed
            * @event destroyEvent
            */
            this.destroyEvent = this.createEvent(EVENT_TYPES.DESTROY);
            this.destroyEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired before the Module is shown
            * @event beforeShowEvent
            */
            this.beforeShowEvent = this.createEvent(EVENT_TYPES.BEFORE_SHOW);
            this.beforeShowEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after the Module is shown
            * @event showEvent
            */
            this.showEvent = this.createEvent(EVENT_TYPES.SHOW);
            this.showEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired before the Module is hidden
            * @event beforeHideEvent
            */
            this.beforeHideEvent = this.createEvent(EVENT_TYPES.BEFORE_HIDE);
            this.beforeHideEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after the Module is hidden
            * @event hideEvent
            */
            this.hideEvent = this.createEvent(EVENT_TYPES.HIDE);
            this.hideEvent.signature = SIGNATURE;
        },

        /**
        * String identifying whether the current platform is windows or mac. This property
        * currently only identifies these 2 platforms, and returns false otherwise.
        * @property platform
        * @deprecated Use YAHOO.env.ua
        * @type {String|Boolean}
        */
        platform: function () {
            var ua = navigator.userAgent.toLowerCase();

            if (ua.indexOf(&quot;windows&quot;) != -1 || ua.indexOf(&quot;win32&quot;) != -1) {
                return &quot;windows&quot;;
            } else if (ua.indexOf(&quot;macintosh&quot;) != -1) {
                return &quot;mac&quot;;
            } else {
                return false;
            }
        }(),

        /**
        * String representing the user-agent of the browser
        * @deprecated Use YAHOO.env.ua
        * @property browser
        * @type {String|Boolean}
        */
        browser: function () {
            var ua = navigator.userAgent.toLowerCase();
            /*
                 Check Opera first in case of spoof and check Safari before
                 Gecko since Safari's user agent string includes &quot;like Gecko&quot;
            */
            if (ua.indexOf('opera') != -1) {
                return 'opera';
            } else if (ua.indexOf('msie 7') != -1) {
                return 'ie7';
            } else if (ua.indexOf('msie') != -1) {
                return 'ie';
            } else if (ua.indexOf('safari') != -1) {
                return 'safari';
            } else if (ua.indexOf('gecko') != -1) {
                return 'gecko';
            } else {
                return false;
            }
        }(),

        /**
        * Boolean representing whether or not the current browsing context is
        * secure (https)
        * @property isSecure
        * @type Boolean
        */
        isSecure: function () {
            if (window.location.href.toLowerCase().indexOf(&quot;https&quot;) === 0) {
                return true;
            } else {
                return false;
            }
        }(),

        /**
        * Initializes the custom events for Module which are fired
        * automatically at appropriate times by the Module class.
        */
        initDefaultConfig: function () {
            // Add properties //
            /**
            * Specifies whether the Module is visible on the page.
            * @config visible
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.VISIBLE.key, {
                handler: this.configVisible,
                value: DEFAULT_CONFIG.VISIBLE.value,
                validator: DEFAULT_CONFIG.VISIBLE.validator
            });

            /**
            * &lt;p&gt;
            * Object or array of objects representing the ContainerEffect
            * classes that are active for animating the container.
            * &lt;/p&gt;
            * &lt;p&gt;
            * &lt;strong&gt;NOTE:&lt;/strong&gt; Although this configuration
            * property is introduced at the Module level, an out of the box
            * implementation is not shipped for the Module class so setting
            * the proroperty on the Module class has no effect. The Overlay
            * class is the first class to provide out of the box ContainerEffect
            * support.
            * &lt;/p&gt;
            * @config effect
            * @type Object
            * @default null
            */
            this.cfg.addProperty(DEFAULT_CONFIG.EFFECT.key, {
                handler: this.configEffect,
                suppressEvent: DEFAULT_CONFIG.EFFECT.suppressEvent,
                supercedes: DEFAULT_CONFIG.EFFECT.supercedes
            });

            /**
            * Specifies whether to create a special proxy iframe to monitor
            * for user font resizing in the document
            * @config monitorresize
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.MONITOR_RESIZE.key, {
                handler: this.configMonitorResize,
                value: DEFAULT_CONFIG.MONITOR_RESIZE.value
            });

            /**
            * Specifies if the module should be rendered as the first child
            * of document.body or appended as the last child when render is called
            * with document.body as the &quot;appendToNode&quot;.
            * &lt;p&gt;
            * Appending to the body while the DOM is still being constructed can
            * lead to Operation Aborted errors in IE hence this flag is set to
            * false by default.
            * &lt;/p&gt;
            *
            * @config appendtodocumentbody
            * @type Boolean
            * @default false
            */
            this.cfg.addProperty(DEFAULT_CONFIG.APPEND_TO_DOCUMENT_BODY.key, {
                value: DEFAULT_CONFIG.APPEND_TO_DOCUMENT_BODY.value
            });
        },

        /**
        * The Module class's initialization method, which is executed for
        * Module and all of its subclasses. This method is automatically
        * called by the constructor, and  sets up all DOM references for
        * pre-existing markup, and creates required markup if it is not
        * already present.
        * &lt;p&gt;
        * If the element passed in does not have an id, one will be generated
        * for it.
        * &lt;/p&gt;
        * @method init
        * @param {String} el The element ID representing the Module &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the Module
        * @param {Object} userConfig The configuration Object literal
        * containing the configuration that should be set for this module.
        * See configuration documentation for more details.
        */
        init: function (el, userConfig) {

            var elId, child;

            this.initEvents();
            this.beforeInitEvent.fire(Module);

            /**
            * The Module's Config object used for monitoring
            * configuration properties.
            * @property cfg
            * @type YAHOO.util.Config
            */
            this.cfg = new Config(this);

            if (this.isSecure) {
                this.imageRoot = Module.IMG_ROOT_SSL;
            }

            if (typeof el == &quot;string&quot;) {
                elId = el;
                el = document.getElementById(el);
                if (! el) {
                    el = (createModuleTemplate()).cloneNode(false);
                    el.id = elId;
                }
            }

            this.id = Dom.generateId(el);
            this.element = el;

            child = this.element.firstChild;

            if (child) {
                var fndHd = false, fndBd = false, fndFt = false;
                do {
                    // We're looking for elements
                    if (1 == child.nodeType) {
                        if (!fndHd &amp;&amp; Dom.hasClass(child, Module.CSS_HEADER)) {
                            this.header = child;
                            fndHd = true;
                        } else if (!fndBd &amp;&amp; Dom.hasClass(child, Module.CSS_BODY)) {
                            this.body = child;
                            fndBd = true;
                        } else if (!fndFt &amp;&amp; Dom.hasClass(child, Module.CSS_FOOTER)){
                            this.footer = child;
                            fndFt = true;
                        }
                    }
                } while ((child = child.nextSibling));
            }

            this.initDefaultConfig();

            Dom.addClass(this.element, Module.CSS_MODULE);

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            /*
                Subscribe to the fireQueue() method of Config so that any
                queued configuration changes are excecuted upon render of
                the Module
            */

            if (!Config.alreadySubscribed(this.renderEvent, this.cfg.fireQueue, this.cfg)) {
                this.renderEvent.subscribe(this.cfg.fireQueue, this.cfg, true);
            }

            this.initEvent.fire(Module);
        },

        /**
        * Initialize an empty IFRAME that is placed out of the visible area
        * that can be used to detect text resize.
        * @method initResizeMonitor
        */
        initResizeMonitor: function () {

            var isGeckoWin = (UA.gecko &amp;&amp; this.platform == &quot;windows&quot;);
            if (isGeckoWin) {
                // Help prevent spinning loading icon which
                // started with FireFox 2.0.0.8/Win
                var self = this;
                setTimeout(function(){self._initResizeMonitor();}, 0);
            } else {
                this._initResizeMonitor();
            }
        },

        /**
         * Create and initialize the text resize monitoring iframe.
         *
         * @protected
         * @method _initResizeMonitor
         */
        _initResizeMonitor : function() {

            var oDoc,
                oIFrame,
                sHTML;

            function fireTextResize() {
                Module.textResizeEvent.fire();
            }

            if (!UA.opera) {
                oIFrame = Dom.get(&quot;_yuiResizeMonitor&quot;);

                var supportsCWResize = this._supportsCWResize();

                if (!oIFrame) {
                    oIFrame = document.createElement(&quot;iframe&quot;);

                    if (this.isSecure &amp;&amp; Module.RESIZE_MONITOR_SECURE_URL &amp;&amp; UA.ie) {
                        oIFrame.src = Module.RESIZE_MONITOR_SECURE_URL;
                    }

                    if (!supportsCWResize) {
                        // Can't monitor on contentWindow, so fire from inside iframe
                        sHTML = [&quot;&lt;html&gt;&lt;head&gt;&lt;script &quot;,
                                 &quot;type=\&quot;text/javascript\&quot;&gt;&quot;,
                                 &quot;window.onresize=function(){window.parent.&quot;,
                                 &quot;YAHOO.widget.Module.textResizeEvent.&quot;,
                                 &quot;fire();};&lt;&quot;,
                                 &quot;\/script&gt;&lt;/head&gt;&quot;,
                                 &quot;&lt;body&gt;&lt;/body&gt;&lt;/html&gt;&quot;].join('');

                        oIFrame.src = &quot;data:text/html;charset=utf-8,&quot; + encodeURIComponent(sHTML);
                    }

                    oIFrame.id = &quot;_yuiResizeMonitor&quot;;
                    oIFrame.title = &quot;Text Resize Monitor&quot;;
                    oIFrame.tabIndex = -1;
                    oIFrame.setAttribute(&quot;role&quot;, &quot;presentation&quot;);

                    /*
                        Need to set &quot;position&quot; property before inserting the
                        iframe into the document or Safari's status bar will
                        forever indicate the iframe is loading
                        (See YUILibrary bug #1723064)
                    */
                    oIFrame.style.position = &quot;absolute&quot;;
                    oIFrame.style.visibility = &quot;hidden&quot;;

                    var db = document.body,
                        fc = db.firstChild;
                    if (fc) {
                        db.insertBefore(oIFrame, fc);
                    } else {
                        db.appendChild(oIFrame);
                    }

                    // Setting the background color fixes an issue with IE6/IE7, where
                    // elements in the DOM, with -ve margin-top which positioned them
                    // offscreen (so they would be overlapped by the iframe and its -ve top
                    // setting), would have their -ve margin-top ignored, when the iframe
                    // was added.
                    oIFrame.style.backgroundColor = &quot;transparent&quot;;

                    oIFrame.style.borderWidth = &quot;0&quot;;
                    oIFrame.style.width = &quot;2em&quot;;
                    oIFrame.style.height = &quot;2em&quot;;
                    oIFrame.style.left = &quot;0&quot;;
                    oIFrame.style.top = (-1 * (oIFrame.offsetHeight + Module.RESIZE_MONITOR_BUFFER)) + &quot;px&quot;;
                    oIFrame.style.visibility = &quot;visible&quot;;

                    /*
                       Don't open/close the document for Gecko like we used to, since it
                       leads to duplicate cookies. (See YUILibrary bug #1721755)
                    */
                    if (UA.webkit) {
                        oDoc = oIFrame.contentWindow.document;
                        oDoc.open();
                        oDoc.close();
                    }
                }

                if (oIFrame &amp;&amp; oIFrame.contentWindow) {
                    Module.textResizeEvent.subscribe(this.onDomResize, this, true);

                    if (!Module.textResizeInitialized) {
                        if (supportsCWResize) {
                            if (!Event.on(oIFrame.contentWindow, &quot;resize&quot;, fireTextResize)) {
                                /*
                                     This will fail in IE if document.domain has
                                     changed, so we must change the listener to
                                     use the oIFrame element instead
                                */
                                Event.on(oIFrame, &quot;resize&quot;, fireTextResize);
                            }
                        }
                        Module.textResizeInitialized = true;
                    }
                    this.resizeMonitor = oIFrame;
                }
            }
        },

        /**
         * Text resize monitor helper method.
         * Determines if the browser supports resize events on iframe content windows.
         *
         * @private
         * @method _supportsCWResize
         */
        _supportsCWResize : function() {
            /*
                Gecko 1.8.0 (FF1.5), 1.8.1.0-5 (FF2) won't fire resize on contentWindow.
                Gecko 1.8.1.6+ (FF2.0.0.6+) and all other browsers will fire resize on contentWindow.

                We don't want to start sniffing for patch versions, so fire textResize the same
                way on all FF2 flavors
             */
            var bSupported = true;
            if (UA.gecko &amp;&amp; UA.gecko &lt;= 1.8) {
                bSupported = false;
            }
            return bSupported;
        },

        /**
        * Event handler fired when the resize monitor element is resized.
        * @method onDomResize
        * @param {DOMEvent} e The DOM resize event
        * @param {Object} obj The scope object passed to the handler
        */
        onDomResize: function (e, obj) {

            var nTop = -1 * (this.resizeMonitor.offsetHeight + Module.RESIZE_MONITOR_BUFFER);

            this.resizeMonitor.style.top = nTop + &quot;px&quot;;
            this.resizeMonitor.style.left = &quot;0&quot;;
        },

        /**
        * Sets the Module's header content to the markup specified, or appends
        * the passed element to the header.
        *
        * If no header is present, one will
        * be automatically created. An empty string can be passed to the method
        * to clear the contents of the header.
        *
        * @method setHeader
        * @param {HTML} headerContent The markup used to set the header content.
        * As a convenience, non HTMLElement objects can also be passed into
        * the method, and will be treated as strings, with the header innerHTML
        * set to their default toString implementations.
        *
        * &lt;p&gt;NOTE: Markup passed into this method is added to the DOM as HTML, and should be escaped by the implementor if coming from an external source.&lt;/p&gt;
        *
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} headerContent The HTMLElement to append to
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {DocumentFragment} headerContent The document fragment
        * containing elements which are to be added to the header
        */
        setHeader: function (headerContent) {
            var oHeader = this.header || (this.header = createHeader());

            if (headerContent.nodeName) {
                oHeader.innerHTML = &quot;&quot;;
                oHeader.appendChild(headerContent);
            } else {
                oHeader.innerHTML = headerContent;
            }

            if (this._rendered) {
                this._renderHeader();
            }

            this.changeHeaderEvent.fire(headerContent);
            this.changeContentEvent.fire();

        },

        /**
        * Appends the passed element to the header. If no header is present,
        * one will be automatically created.
        * @method appendToHeader
        * @param {HTMLElement | DocumentFragment} element The element to
        * append to the header. In the case of a document fragment, the
        * children of the fragment will be appended to the header.
        */
        appendToHeader: function (element) {
            var oHeader = this.header || (this.header = createHeader());

            oHeader.appendChild(element);

            this.changeHeaderEvent.fire(element);
            this.changeContentEvent.fire();

        },

        /**
        * Sets the Module's body content to the HTML specified.
        *
        * If no body is present, one will be automatically created.
        *
        * An empty string can be passed to the method to clear the contents of the body.
        * @method setBody
        * @param {HTML} bodyContent The HTML used to set the body content
        * As a convenience, non HTMLElement objects can also be passed into
        * the method, and will be treated as strings, with the body innerHTML
        * set to their default toString implementations.
        *
        * &lt;p&gt;NOTE: Markup passed into this method is added to the DOM as HTML, and should be escaped by the implementor if coming from an external source.&lt;/p&gt;
        *
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} bodyContent The HTMLElement to add as the first and only
        * child of the body element.
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {DocumentFragment} bodyContent The document fragment
        * containing elements which are to be added to the body
        */
        setBody: function (bodyContent) {
            var oBody = this.body || (this.body = createBody());

            if (bodyContent.nodeName) {
                oBody.innerHTML = &quot;&quot;;
                oBody.appendChild(bodyContent);
            } else {
                oBody.innerHTML = bodyContent;
            }

            if (this._rendered) {
                this._renderBody();
            }

            this.changeBodyEvent.fire(bodyContent);
            this.changeContentEvent.fire();
        },

        /**
        * Appends the passed element to the body. If no body is present, one
        * will be automatically created.
        * @method appendToBody
        * @param {HTMLElement | DocumentFragment} element The element to
        * append to the body. In the case of a document fragment, the
        * children of the fragment will be appended to the body.
        *
        */
        appendToBody: function (element) {
            var oBody = this.body || (this.body = createBody());

            oBody.appendChild(element);

            this.changeBodyEvent.fire(element);
            this.changeContentEvent.fire();

        },

        /**
        * Sets the Module's footer content to the HTML specified, or appends
        * the passed element to the footer. If no footer is present, one will
        * be automatically created. An empty string can be passed to the method
        * to clear the contents of the footer.
        * @method setFooter
        * @param {HTML} footerContent The HTML used to set the footer
        * As a convenience, non HTMLElement objects can also be passed into
        * the method, and will be treated as strings, with the footer innerHTML
        * set to their default toString implementations.
        *
        * &lt;p&gt;NOTE: Markup passed into this method is added to the DOM as HTML, and should be escaped by the implementor if coming from an external source.&lt;/p&gt;
        *
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} footerContent The HTMLElement to append to
        * the footer
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {DocumentFragment} footerContent The document fragment containing
        * elements which are to be added to the footer
        */
        setFooter: function (footerContent) {

            var oFooter = this.footer || (this.footer = createFooter());

            if (footerContent.nodeName) {
                oFooter.innerHTML = &quot;&quot;;
                oFooter.appendChild(footerContent);
            } else {
                oFooter.innerHTML = footerContent;
            }

            if (this._rendered) {
                this._renderFooter();
            }

            this.changeFooterEvent.fire(footerContent);
            this.changeContentEvent.fire();
        },

        /**
        * Appends the passed element to the footer. If no footer is present,
        * one will be automatically created.
        * @method appendToFooter
        * @param {HTMLElement | DocumentFragment} element The element to
        * append to the footer. In the case of a document fragment, the
        * children of the fragment will be appended to the footer
        */
        appendToFooter: function (element) {

            var oFooter = this.footer || (this.footer = createFooter());

            oFooter.appendChild(element);

            this.changeFooterEvent.fire(element);
            this.changeContentEvent.fire();

        },

        /**
        * Renders the Module by inserting the elements that are not already
        * in the main Module into their correct places. Optionally appends
        * the Module to the specified node prior to the render's execution.
        * &lt;p&gt;
        * For Modules without existing markup, the appendToNode argument
        * is REQUIRED. If this argument is ommitted and the current element is
        * not present in the document, the function will return false,
        * indicating that the render was a failure.
        * &lt;/p&gt;
        * &lt;p&gt;
        * NOTE: As of 2.3.1, if the appendToNode is the document's body element
        * then the module is rendered as the first child of the body element,
        * and not appended to it, to avoid Operation Aborted errors in IE when
        * rendering the module before window's load event is fired. You can
        * use the appendtodocumentbody configuration property to change this
        * to append to document.body if required.
        * &lt;/p&gt;
        * @method render
        * @param {String} appendToNode The element id to which the Module
        * should be appended to prior to rendering &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} appendToNode The element to which the Module
        * should be appended to prior to rendering
        * @param {HTMLElement} moduleElement OPTIONAL. The element that
        * represents the actual Standard Module container.
        * @return {Boolean} Success or failure of the render
        */
        render: function (appendToNode, moduleElement) {

            var me = this;

            function appendTo(parentNode) {
                if (typeof parentNode == &quot;string&quot;) {
                    parentNode = document.getElementById(parentNode);
                }

                if (parentNode) {
                    me._addToParent(parentNode, me.element);
                    me.appendEvent.fire();
                }
            }

            this.beforeRenderEvent.fire();

            if (! moduleElement) {
                moduleElement = this.element;
            }

            if (appendToNode) {
                appendTo(appendToNode);
            } else {
                // No node was passed in. If the element is not already in the Dom, this fails
                if (! Dom.inDocument(this.element)) {
                    YAHOO.log(&quot;Render failed. Must specify appendTo node if &quot; + &quot; Module isn't already in the DOM.&quot;, &quot;error&quot;);
                    return false;
                }
            }

            this._renderHeader(moduleElement);
            this._renderBody(moduleElement);
            this._renderFooter(moduleElement);

            this._rendered = true;

            this.renderEvent.fire();
            return true;
        },

        /**
         * Renders the currently set header into it's proper position under the
         * module element. If the module element is not provided, &quot;this.element&quot;
         * is used.
         *
         * @method _renderHeader
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element
         */
        _renderHeader: function(moduleElement){
            moduleElement = moduleElement || this.element;

            // Need to get everything into the DOM if it isn't already
            if (this.header &amp;&amp; !Dom.inDocument(this.header)) {
                // There is a header, but it's not in the DOM yet. Need to add it.
                var firstChild = moduleElement.firstChild;
                if (firstChild) {
                    moduleElement.insertBefore(this.header, firstChild);
                } else {
                    moduleElement.appendChild(this.header);
                }
            }
        },

        /**
         * Renders the currently set body into it's proper position under the
         * module element. If the module element is not provided, &quot;this.element&quot;
         * is used.
         *
         * @method _renderBody
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element.
         */
        _renderBody: function(moduleElement){
            moduleElement = moduleElement || this.element;

            if (this.body &amp;&amp; !Dom.inDocument(this.body)) {
                // There is a body, but it's not in the DOM yet. Need to add it.
                if (this.footer &amp;&amp; Dom.isAncestor(moduleElement, this.footer)) {
                    moduleElement.insertBefore(this.body, this.footer);
                } else {
                    moduleElement.appendChild(this.body);
                }
            }
        },

        /**
         * Renders the currently set footer into it's proper position under the
         * module element. If the module element is not provided, &quot;this.element&quot;
         * is used.
         *
         * @method _renderFooter
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element
         */
        _renderFooter: function(moduleElement){
            moduleElement = moduleElement || this.element;

            if (this.footer &amp;&amp; !Dom.inDocument(this.footer)) {
                // There is a footer, but it's not in the DOM yet. Need to add it.
                moduleElement.appendChild(this.footer);
            }
        },

        /**
        * Removes the Module element from the DOM, sets all child elements to null, and purges the bounding element of event listeners.
        * @method destroy
        * @param {boolean} shallowPurge If true, only the parent element's DOM event listeners are purged. If false, or not provided, all children are also purged of DOM event listeners.
        * NOTE: The flag is a &quot;shallowPurge&quot; flag, as opposed to what may be a more intuitive &quot;purgeChildren&quot; flag to maintain backwards compatibility with behavior prior to 2.9.0.
        */
        destroy: function (shallowPurge) {

            var parent,
                purgeChildren = !(shallowPurge);

            if (this.element) {
                Event.purgeElement(this.element, purgeChildren);
                parent = this.element.parentNode;
            }

            if (parent) {
                parent.removeChild(this.element);
            }

            this.element = null;
            this.header = null;
            this.body = null;
            this.footer = null;

            Module.textResizeEvent.unsubscribe(this.onDomResize, this);

            this.cfg.destroy();
            this.cfg = null;

            this.destroyEvent.fire();
        },

        /**
        * Shows the Module element by setting the visible configuration
        * property to true. Also fires two events: beforeShowEvent prior to
        * the visibility change, and showEvent after.
        * @method show
        */
        show: function () {
            this.cfg.setProperty(&quot;visible&quot;, true);
        },

        /**
        * Hides the Module element by setting the visible configuration
        * property to false. Also fires two events: beforeHideEvent prior to
        * the visibility change, and hideEvent after.
        * @method hide
        */
        hide: function () {
            this.cfg.setProperty(&quot;visible&quot;, false);
        },

        // BUILT-IN EVENT HANDLERS FOR MODULE //
        /**
        * Default event handler for changing the visibility property of a
        * Module. By default, this is achieved by switching the &quot;display&quot; style
        * between &quot;block&quot; and &quot;none&quot;.
        * This method is responsible for firing showEvent and hideEvent.
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        * @method configVisible
        */
        configVisible: function (type, args, obj) {
            var visible = args[0];
            if (visible) {
                if(this.beforeShowEvent.fire()) {
                    Dom.setStyle(this.element, &quot;display&quot;, &quot;block&quot;);
                    this.showEvent.fire();
                }
            } else {
                if (this.beforeHideEvent.fire()) {
                    Dom.setStyle(this.element, &quot;display&quot;, &quot;none&quot;);
                    this.hideEvent.fire();
                }
            }
        },

        /**
        * Default event handler for the &quot;effect&quot; configuration property
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        * @method configEffect
        */
        configEffect: function (type, args, obj) {
            this._cachedEffects = (this.cacheEffects) ? this._createEffects(args[0]) : null;
        },

        /**
         * If true, ContainerEffects (and Anim instances) are cached when &quot;effect&quot; is set, and reused.
         * If false, new instances are created each time the container is hidden or shown, as was the
         * behavior prior to 2.9.0.
         *
         * @property cacheEffects
         * @since 2.9.0
         * @default true
         * @type boolean
         */
        cacheEffects : true,

        /**
         * Creates an array of ContainerEffect instances from the provided configs
         *
         * @method _createEffects
         * @param {Array|Object} effectCfg An effect configuration or array of effect configurations
         * @return {Array} An array of ContainerEffect instances.
         * @protected
         */
        _createEffects: function(effectCfg) {
            var effectInstances = null,
                n,
                i,
                eff;

            if (effectCfg) {
                if (effectCfg instanceof Array) {
                    effectInstances = [];
                    n = effectCfg.length;
                    for (i = 0; i &lt; n; i++) {
                        eff = effectCfg[i];
                        if (eff.effect) {
                            effectInstances[effectInstances.length] = eff.effect(this, eff.duration);
                        }
                    }
                } else if (effectCfg.effect) {
                    effectInstances = [effectCfg.effect(this, effectCfg.duration)];
                }
            }

            return effectInstances;
        },

        /**
        * Default event handler for the &quot;monitorresize&quot; configuration property
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        * @method configMonitorResize
        */
        configMonitorResize: function (type, args, obj) {
            var monitor = args[0];
            if (monitor) {
                this.initResizeMonitor();
            } else {
                Module.textResizeEvent.unsubscribe(this.onDomResize, this, true);
                this.resizeMonitor = null;
            }
        },

        /**
         * This method is a protected helper, used when constructing the DOM structure for the module
         * to account for situations which may cause Operation Aborted errors in IE. It should not
         * be used for general DOM construction.
         * &lt;p&gt;
         * If the parentNode is not document.body, the element is appended as the last element.
         * &lt;/p&gt;
         * &lt;p&gt;
         * If the parentNode is document.body the element is added as the first child to help
         * prevent Operation Aborted errors in IE.
         * &lt;/p&gt;
         *
         * @param {parentNode} The HTML element to which the element will be added
         * @param {element} The HTML element to be added to parentNode's children
         * @method _addToParent
         * @protected
         */
        _addToParent: function(parentNode, element) {
            if (!this.cfg.getProperty(&quot;appendtodocumentbody&quot;) &amp;&amp; parentNode === document.body &amp;&amp; parentNode.firstChild) {
                parentNode.insertBefore(element, parentNode.firstChild);
            } else {
                parentNode.appendChild(element);
            }
        },

        /**
        * Returns a String representation of the Object.
        * @method toString
        * @return {String} The string representation of the Module
        */
        toString: function () {
            return &quot;Module &quot; + this.id;
        }
    };

    YAHOO.lang.augmentProto(Module, YAHOO.util.EventProvider);

}());
(function () {

    /**
    * Overlay is a Module that is absolutely positioned above the page flow. It
    * has convenience methods for positioning and sizing, as well as options for
    * controlling zIndex and constraining the Overlay's position to the current
    * visible viewport. Overlay also contains a dynamicly generated IFRAME which
    * is placed beneath it for Internet Explorer 6 and 5.x so that it will be
    * properly rendered above SELECT elements.
    * @namespace YAHOO.widget
    * @class Overlay
    * @extends YAHOO.widget.Module
    * @param {String} el The element ID representing the Overlay &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the Overlay
    * @param {Object} userConfig The configuration object literal containing
    * the configuration that should be set for this Overlay. See configuration
    * documentation for more details.
    * @constructor
    */
    YAHOO.widget.Overlay = function (el, userConfig) {
        YAHOO.widget.Overlay.superclass.constructor.call(this, el, userConfig);
    };

    var Lang = YAHOO.lang,
        CustomEvent = YAHOO.util.CustomEvent,
        Module = YAHOO.widget.Module,
        Event = YAHOO.util.Event,
        Dom = YAHOO.util.Dom,
        Config = YAHOO.util.Config,
        UA = YAHOO.env.ua,
        Overlay = YAHOO.widget.Overlay,

        _SUBSCRIBE = &quot;subscribe&quot;,
        _UNSUBSCRIBE = &quot;unsubscribe&quot;,
        _CONTAINED = &quot;contained&quot;,

        m_oIFrameTemplate,

        /**
        * Constant representing the name of the Overlay's events
        * @property EVENT_TYPES
        * @private
        * @final
        * @type Object
        */
        EVENT_TYPES = {
            &quot;BEFORE_MOVE&quot;: &quot;beforeMove&quot;,
            &quot;MOVE&quot;: &quot;move&quot;
        },

        /**
        * Constant representing the Overlay's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;X&quot;: {
                key: &quot;x&quot;,
                validator: Lang.isNumber,
                suppressEvent: true,
                supercedes: [&quot;iframe&quot;]
            },

            &quot;Y&quot;: {
                key: &quot;y&quot;,
                validator: Lang.isNumber,
                suppressEvent: true,
                supercedes: [&quot;iframe&quot;]
            },

            &quot;XY&quot;: {
                key: &quot;xy&quot;,
                suppressEvent: true,
                supercedes: [&quot;iframe&quot;]
            },

            &quot;CONTEXT&quot;: {
                key: &quot;context&quot;,
                suppressEvent: true,
                supercedes: [&quot;iframe&quot;]
            },

            &quot;FIXED_CENTER&quot;: {
                key: &quot;fixedcenter&quot;,
                value: false,
                supercedes: [&quot;iframe&quot;, &quot;visible&quot;]
            },

            &quot;WIDTH&quot;: {
                key: &quot;width&quot;,
                suppressEvent: true,
                supercedes: [&quot;context&quot;, &quot;fixedcenter&quot;, &quot;iframe&quot;]
            },

            &quot;HEIGHT&quot;: {
                key: &quot;height&quot;,
                suppressEvent: true,
                supercedes: [&quot;context&quot;, &quot;fixedcenter&quot;, &quot;iframe&quot;]
            },

            &quot;AUTO_FILL_HEIGHT&quot; : {
                key: &quot;autofillheight&quot;,
                supercedes: [&quot;height&quot;],
                value:&quot;body&quot;
            },

            &quot;ZINDEX&quot;: {
                key: &quot;zindex&quot;,
                value: null
            },

            &quot;CONSTRAIN_TO_VIEWPORT&quot;: {
                key: &quot;constraintoviewport&quot;,
                value: false,
                validator: Lang.isBoolean,
                supercedes: [&quot;iframe&quot;, &quot;x&quot;, &quot;y&quot;, &quot;xy&quot;]
            },

            &quot;IFRAME&quot;: {
                key: &quot;iframe&quot;,
                value: (UA.ie == 6 ? true : false),
                validator: Lang.isBoolean,
                supercedes: [&quot;zindex&quot;]
            },

            &quot;PREVENT_CONTEXT_OVERLAP&quot;: {
                key: &quot;preventcontextoverlap&quot;,
                value: false,
                validator: Lang.isBoolean,
                supercedes: [&quot;constraintoviewport&quot;]
            }

        };

    /**
    * The URL that will be placed in the iframe
    * @property YAHOO.widget.Overlay.IFRAME_SRC
    * @static
    * @final
    * @type String
    */
    Overlay.IFRAME_SRC = &quot;javascript:false;&quot;;

    /**
    * Number representing how much the iframe shim should be offset from each
    * side of an Overlay instance, in pixels.
    * @property YAHOO.widget.Overlay.IFRAME_SRC
    * @default 3
    * @static
    * @final
    * @type Number
    */
    Overlay.IFRAME_OFFSET = 3;

    /**
    * Number representing the minimum distance an Overlay instance should be
    * positioned relative to the boundaries of the browser's viewport, in pixels.
    * @property YAHOO.widget.Overlay.VIEWPORT_OFFSET
    * @default 10
    * @static
    * @final
    * @type Number
    */
    Overlay.VIEWPORT_OFFSET = 10;

    /**
    * Constant representing the top left corner of an element, used for
    * configuring the context element alignment
    * @property YAHOO.widget.Overlay.TOP_LEFT
    * @static
    * @final
    * @type String
    */
    Overlay.TOP_LEFT = &quot;tl&quot;;

    /**
    * Constant representing the top right corner of an element, used for
    * configuring the context element alignment
    * @property YAHOO.widget.Overlay.TOP_RIGHT
    * @static
    * @final
    * @type String
    */
    Overlay.TOP_RIGHT = &quot;tr&quot;;

    /**
    * Constant representing the top bottom left corner of an element, used for
    * configuring the context element alignment
    * @property YAHOO.widget.Overlay.BOTTOM_LEFT
    * @static
    * @final
    * @type String
    */
    Overlay.BOTTOM_LEFT = &quot;bl&quot;;

    /**
    * Constant representing the bottom right corner of an element, used for
    * configuring the context element alignment
    * @property YAHOO.widget.Overlay.BOTTOM_RIGHT
    * @static
    * @final
    * @type String
    */
    Overlay.BOTTOM_RIGHT = &quot;br&quot;;

    Overlay.PREVENT_OVERLAP_X = {
        &quot;tltr&quot;: true,
        &quot;blbr&quot;: true,
        &quot;brbl&quot;: true,
        &quot;trtl&quot;: true
    };

    Overlay.PREVENT_OVERLAP_Y = {
        &quot;trbr&quot;: true,
        &quot;tlbl&quot;: true,
        &quot;bltl&quot;: true,
        &quot;brtr&quot;: true
    };

    /**
    * Constant representing the default CSS class used for an Overlay
    * @property YAHOO.widget.Overlay.CSS_OVERLAY
    * @static
    * @final
    * @type String
    */
    Overlay.CSS_OVERLAY = &quot;yui-overlay&quot;;

    /**
    * Constant representing the default hidden CSS class used for an Overlay. This class is
    * applied to the overlay's outer DIV whenever it's hidden.
    *
    * @property YAHOO.widget.Overlay.CSS_HIDDEN
    * @static
    * @final
    * @type String
    */
    Overlay.CSS_HIDDEN = &quot;yui-overlay-hidden&quot;;

    /**
    * Constant representing the default CSS class used for an Overlay iframe shim.
    *
    * @property YAHOO.widget.Overlay.CSS_IFRAME
    * @static
    * @final
    * @type String
    */
    Overlay.CSS_IFRAME = &quot;yui-overlay-iframe&quot;;

    /**
     * Constant representing the names of the standard module elements
     * used in the overlay.
     * @property YAHOO.widget.Overlay.STD_MOD_RE
     * @static
     * @final
     * @type RegExp
     */
    Overlay.STD_MOD_RE = /^\s*?(body|footer|header)\s*?$/i;

    /**
    * A singleton CustomEvent used for reacting to the DOM event for
    * window scroll
    * @event YAHOO.widget.Overlay.windowScrollEvent
    */
    Overlay.windowScrollEvent = new CustomEvent(&quot;windowScroll&quot;);

    /**
    * A singleton CustomEvent used for reacting to the DOM event for
    * window resize
    * @event YAHOO.widget.Overlay.windowResizeEvent
    */
    Overlay.windowResizeEvent = new CustomEvent(&quot;windowResize&quot;);

    /**
    * The DOM event handler used to fire the CustomEvent for window scroll
    * @method YAHOO.widget.Overlay.windowScrollHandler
    * @static
    * @param {DOMEvent} e The DOM scroll event
    */
    Overlay.windowScrollHandler = function (e) {
        var t = Event.getTarget(e);

        // - Webkit (Safari 2/3) and Opera 9.2x bubble scroll events from elements to window
        // - FF2/3 and IE6/7, Opera 9.5x don't bubble scroll events from elements to window
        // - IE doesn't recognize scroll registered on the document.
        //
        // Also, when document view is scrolled, IE doesn't provide a target,
        // rest of the browsers set target to window.document, apart from opera
        // which sets target to window.
        if (!t || t === window || t === window.document) {
            if (UA.ie) {

                if (! window.scrollEnd) {
                    window.scrollEnd = -1;
                }

                clearTimeout(window.scrollEnd);

                window.scrollEnd = setTimeout(function () {
                    Overlay.windowScrollEvent.fire();
                }, 1);

            } else {
                Overlay.windowScrollEvent.fire();
            }
        }
    };

    /**
    * The DOM event handler used to fire the CustomEvent for window resize
    * @method YAHOO.widget.Overlay.windowResizeHandler
    * @static
    * @param {DOMEvent} e The DOM resize event
    */
    Overlay.windowResizeHandler = function (e) {

        if (UA.ie) {
            if (! window.resizeEnd) {
                window.resizeEnd = -1;
            }

            clearTimeout(window.resizeEnd);

            window.resizeEnd = setTimeout(function () {
                Overlay.windowResizeEvent.fire();
            }, 100);
        } else {
            Overlay.windowResizeEvent.fire();
        }
    };

    /**
    * A boolean that indicated whether the window resize and scroll events have
    * already been subscribed to.
    * @property YAHOO.widget.Overlay._initialized
    * @private
    * @type Boolean
    */
    Overlay._initialized = null;

    if (Overlay._initialized === null) {
        Event.on(window, &quot;scroll&quot;, Overlay.windowScrollHandler);
        Event.on(window, &quot;resize&quot;, Overlay.windowResizeHandler);
        Overlay._initialized = true;
    }

    /**
     * Internal map of special event types, which are provided
     * by the instance. It maps the event type to the custom event
     * instance. Contains entries for the &quot;windowScroll&quot;, &quot;windowResize&quot; and
     * &quot;textResize&quot; static container events.
     *
     * @property YAHOO.widget.Overlay._TRIGGER_MAP
     * @type Object
     * @static
     * @private
     */
    Overlay._TRIGGER_MAP = {
        &quot;windowScroll&quot; : Overlay.windowScrollEvent,
        &quot;windowResize&quot; : Overlay.windowResizeEvent,
        &quot;textResize&quot;   : Module.textResizeEvent
    };

    YAHOO.extend(Overlay, Module, {

        /**
         * &lt;p&gt;
         * Array of default event types which will trigger
         * context alignment for the Overlay class.
         * &lt;/p&gt;
         * &lt;p&gt;The array is empty by default for Overlay,
         * but maybe populated in future releases, so classes extending
         * Overlay which need to define their own set of CONTEXT_TRIGGERS
         * should concatenate their super class's prototype.CONTEXT_TRIGGERS
         * value with their own array of values.
         * &lt;/p&gt;
         * &lt;p&gt;
         * E.g.:
         * &lt;code&gt;CustomOverlay.prototype.CONTEXT_TRIGGERS = YAHOO.widget.Overlay.prototype.CONTEXT_TRIGGERS.concat([&quot;windowScroll&quot;]);&lt;/code&gt;
         * &lt;/p&gt;
         *
         * @property CONTEXT_TRIGGERS
         * @type Array
         * @final
         */
        CONTEXT_TRIGGERS : [],

        /**
        * The Overlay initialization method, which is executed for Overlay and
        * all of its subclasses. This method is automatically called by the
        * constructor, and  sets up all DOM references for pre-existing markup,
        * and creates required markup if it is not already present.
        * @method init
        * @param {String} el The element ID representing the Overlay &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the Overlay
        * @param {Object} userConfig The configuration object literal
        * containing the configuration that should be set for this Overlay.
        * See configuration documentation for more details.
        */
        init: function (el, userConfig) {

            /*
                 Note that we don't pass the user config in here yet because we
                 only want it executed once, at the lowest subclass level
            */

            Overlay.superclass.init.call(this, el/*, userConfig*/);

            this.beforeInitEvent.fire(Overlay);

            Dom.addClass(this.element, Overlay.CSS_OVERLAY);

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            if (this.platform == &quot;mac&quot; &amp;&amp; UA.gecko) {

                if (! Config.alreadySubscribed(this.showEvent,
                    this.showMacGeckoScrollbars, this)) {

                    this.showEvent.subscribe(this.showMacGeckoScrollbars,
                        this, true);

                }

                if (! Config.alreadySubscribed(this.hideEvent,
                    this.hideMacGeckoScrollbars, this)) {

                    this.hideEvent.subscribe(this.hideMacGeckoScrollbars,
                        this, true);

                }
            }

            this.initEvent.fire(Overlay);
        },

        /**
        * Initializes the custom events for Overlay which are fired
        * automatically at appropriate times by the Overlay class.
        * @method initEvents
        */
        initEvents: function () {

            Overlay.superclass.initEvents.call(this);

            var SIGNATURE = CustomEvent.LIST;

            /**
            * CustomEvent fired before the Overlay is moved.
            * @event beforeMoveEvent
            * @param {Number} x x coordinate
            * @param {Number} y y coordinate
            */
            this.beforeMoveEvent = this.createEvent(EVENT_TYPES.BEFORE_MOVE);
            this.beforeMoveEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after the Overlay is moved.
            * @event moveEvent
            * @param {Number} x x coordinate
            * @param {Number} y y coordinate
            */
            this.moveEvent = this.createEvent(EVENT_TYPES.MOVE);
            this.moveEvent.signature = SIGNATURE;

        },

        /**
        * Initializes the class's configurable properties which can be changed
        * using the Overlay's Config object (cfg).
        * @method initDefaultConfig
        */
        initDefaultConfig: function () {

            Overlay.superclass.initDefaultConfig.call(this);

            var cfg = this.cfg;

            // Add overlay config properties //

            /**
            * The absolute x-coordinate position of the Overlay
            * @config x
            * @type Number
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.X.key, {

                handler: this.configX,
                validator: DEFAULT_CONFIG.X.validator,
                suppressEvent: DEFAULT_CONFIG.X.suppressEvent,
                supercedes: DEFAULT_CONFIG.X.supercedes

            });

            /**
            * The absolute y-coordinate position of the Overlay
            * @config y
            * @type Number
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.Y.key, {

                handler: this.configY,
                validator: DEFAULT_CONFIG.Y.validator,
                suppressEvent: DEFAULT_CONFIG.Y.suppressEvent,
                supercedes: DEFAULT_CONFIG.Y.supercedes

            });

            /**
            * An array with the absolute x and y positions of the Overlay
            * @config xy
            * @type Number[]
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.XY.key, {
                handler: this.configXY,
                suppressEvent: DEFAULT_CONFIG.XY.suppressEvent,
                supercedes: DEFAULT_CONFIG.XY.supercedes
            });

            /**
            * &lt;p&gt;
            * The array of context arguments for context-sensitive positioning.
            * &lt;/p&gt;
            *
            * &lt;p&gt;
            * The format of the array is: &lt;code&gt;[contextElementOrId, overlayCorner, contextCorner, arrayOfTriggerEvents (optional), xyOffset (optional)]&lt;/code&gt;, the
            * the 5 array elements described in detail below:
            * &lt;/p&gt;
            *
            * &lt;dl&gt;
            * &lt;dt&gt;contextElementOrId &amp;#60;String|HTMLElement&amp;#62;&lt;/dt&gt;
            * &lt;dd&gt;A reference to the context element to which the overlay should be aligned (or it's id).&lt;/dd&gt;
            * &lt;dt&gt;overlayCorner &amp;#60;String&amp;#62;&lt;/dt&gt;
            * &lt;dd&gt;The corner of the overlay which is to be used for alignment. This corner will be aligned to the
            * corner of the context element defined by the &quot;contextCorner&quot; entry which follows. Supported string values are:
            * &quot;tr&quot; (top right), &quot;tl&quot; (top left), &quot;br&quot; (bottom right), or &quot;bl&quot; (bottom left).&lt;/dd&gt;
            * &lt;dt&gt;contextCorner &amp;#60;String&amp;#62;&lt;/dt&gt;
            * &lt;dd&gt;The corner of the context element which is to be used for alignment. Supported string values are the same ones listed for the &quot;overlayCorner&quot; entry above.&lt;/dd&gt;
            * &lt;dt&gt;arrayOfTriggerEvents (optional) &amp;#60;Array[String|CustomEvent]&amp;#62;&lt;/dt&gt;
            * &lt;dd&gt;
            * &lt;p&gt;
            * By default, context alignment is a one time operation, aligning the Overlay to the context element when context configuration property is set, or when the &lt;a href=&quot;#method_align&quot;&gt;align&lt;/a&gt;
            * method is invoked. However, you can use the optional &quot;arrayOfTriggerEvents&quot; entry to define the list of events which should force the overlay to re-align itself with the context element.
            * This is useful in situations where the layout of the document may change, resulting in the context element's position being modified.
            * &lt;/p&gt;
            * &lt;p&gt;
            * The array can contain either event type strings for events the instance publishes (e.g. &quot;beforeShow&quot;) or CustomEvent instances. Additionally the following
            * 3 static container event types are also currently supported : &lt;code&gt;&quot;windowResize&quot;, &quot;windowScroll&quot;, &quot;textResize&quot;&lt;/code&gt; (defined in &lt;a href=&quot;#property__TRIGGER_MAP&quot;&gt;_TRIGGER_MAP&lt;/a&gt; private property).
            * &lt;/p&gt;
            * &lt;/dd&gt;
            * &lt;dt&gt;xyOffset &amp;#60;Number[]&amp;#62;&lt;/dt&gt;
            * &lt;dd&gt;
            * A 2 element Array specifying the X and Y pixel amounts by which the Overlay should be offset from the aligned corner. e.g. [5,0] offsets the Overlay 5 pixels to the left, &lt;em&gt;after&lt;/em&gt; aligning the given context corners.
            * NOTE: If using this property and no triggers need to be defined, the arrayOfTriggerEvents property should be set to null to maintain correct array positions for the arguments.
            * &lt;/dd&gt;
            * &lt;/dl&gt;
            *
            * &lt;p&gt;
            * For example, setting this property to &lt;code&gt;[&quot;img1&quot;, &quot;tl&quot;, &quot;bl&quot;]&lt;/code&gt; will
            * align the Overlay's top left corner to the bottom left corner of the
            * context element with id &quot;img1&quot;.
            * &lt;/p&gt;
            * &lt;p&gt;
            * Setting this property to &lt;code&gt;[&quot;img1&quot;, &quot;tl&quot;, &quot;bl&quot;, null, [0,5]&lt;/code&gt; will
            * align the Overlay's top left corner to the bottom left corner of the
            * context element with id &quot;img1&quot;, and then offset it by 5 pixels on the Y axis (providing a 5 pixel gap between the bottom of the context element and top of the overlay).
            * &lt;/p&gt;
            * &lt;p&gt;
            * Adding the optional trigger values: &lt;code&gt;[&quot;img1&quot;, &quot;tl&quot;, &quot;bl&quot;, [&quot;beforeShow&quot;, &quot;windowResize&quot;], [0,5]]&lt;/code&gt;,
            * will re-align the overlay position, whenever the &quot;beforeShow&quot; or &quot;windowResize&quot; events are fired.
            * &lt;/p&gt;
            *
            * @config context
            * @type Array
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.CONTEXT.key, {
                handler: this.configContext,
                suppressEvent: DEFAULT_CONFIG.CONTEXT.suppressEvent,
                supercedes: DEFAULT_CONFIG.CONTEXT.supercedes
            });

            /**
            * Determines whether or not the Overlay should be anchored
            * to the center of the viewport.
            *
            * &lt;p&gt;This property can be set to:&lt;/p&gt;
            *
            * &lt;dl&gt;
            * &lt;dt&gt;true&lt;/dt&gt;
            * &lt;dd&gt;
            * To enable fixed center positioning
            * &lt;p&gt;
            * When enabled, the overlay will
            * be positioned in the center of viewport when initially displayed, and
            * will remain in the center of the viewport whenever the window is
            * scrolled or resized.
            * &lt;/p&gt;
            * &lt;p&gt;
            * If the overlay is too big for the viewport,
            * it's top left corner will be aligned with the top left corner of the viewport.
            * &lt;/p&gt;
            * &lt;/dd&gt;
            * &lt;dt&gt;false&lt;/dt&gt;
            * &lt;dd&gt;
            * To disable fixed center positioning.
            * &lt;p&gt;In this case the overlay can still be
            * centered as a one-off operation, by invoking the &lt;code&gt;center()&lt;/code&gt; method,
            * however it will not remain centered when the window is scrolled/resized.
            * &lt;/dd&gt;
            * &lt;dt&gt;&quot;contained&quot;&lt;dt&gt;
            * &lt;dd&gt;To enable fixed center positioning, as with the &lt;code&gt;true&lt;/code&gt; option.
            * &lt;p&gt;However, unlike setting the property to &lt;code&gt;true&lt;/code&gt;,
            * when the property is set to &lt;code&gt;&quot;contained&quot;&lt;/code&gt;, if the overlay is
            * too big for the viewport, it will not get automatically centered when the
            * user scrolls or resizes the window (until the window is large enough to contain the
            * overlay). This is useful in cases where the Overlay has both header and footer
            * UI controls which the user may need to access.
            * &lt;/p&gt;
            * &lt;/dd&gt;
            * &lt;/dl&gt;
            *
            * @config fixedcenter
            * @type Boolean | String
            * @default false
            */
            cfg.addProperty(DEFAULT_CONFIG.FIXED_CENTER.key, {
                handler: this.configFixedCenter,
                value: DEFAULT_CONFIG.FIXED_CENTER.value,
                validator: DEFAULT_CONFIG.FIXED_CENTER.validator,
                supercedes: DEFAULT_CONFIG.FIXED_CENTER.supercedes
            });

            /**
            * CSS width of the Overlay.
            * @config width
            * @type String
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.WIDTH.key, {
                handler: this.configWidth,
                suppressEvent: DEFAULT_CONFIG.WIDTH.suppressEvent,
                supercedes: DEFAULT_CONFIG.WIDTH.supercedes
            });

            /**
            * CSS height of the Overlay.
            * @config height
            * @type String
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.HEIGHT.key, {
                handler: this.configHeight,
                suppressEvent: DEFAULT_CONFIG.HEIGHT.suppressEvent,
                supercedes: DEFAULT_CONFIG.HEIGHT.supercedes
            });

            /**
            * Standard module element which should auto fill out the height of the Overlay if the height config property is set.
            * Supported values are &quot;header&quot;, &quot;body&quot;, &quot;footer&quot;.
            *
            * @config autofillheight
            * @type String
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.AUTO_FILL_HEIGHT.key, {
                handler: this.configAutoFillHeight,
                value : DEFAULT_CONFIG.AUTO_FILL_HEIGHT.value,
                validator : this._validateAutoFill,
                supercedes: DEFAULT_CONFIG.AUTO_FILL_HEIGHT.supercedes
            });

            /**
            * CSS z-index of the Overlay.
            * @config zIndex
            * @type Number
            * @default null
            */
            cfg.addProperty(DEFAULT_CONFIG.ZINDEX.key, {
                handler: this.configzIndex,
                value: DEFAULT_CONFIG.ZINDEX.value
            });

            /**
            * True if the Overlay should be prevented from being positioned
            * out of the viewport.
            * @config constraintoviewport
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEFAULT_CONFIG.CONSTRAIN_TO_VIEWPORT.key, {

                handler: this.configConstrainToViewport,
                value: DEFAULT_CONFIG.CONSTRAIN_TO_VIEWPORT.value,
                validator: DEFAULT_CONFIG.CONSTRAIN_TO_VIEWPORT.validator,
                supercedes: DEFAULT_CONFIG.CONSTRAIN_TO_VIEWPORT.supercedes

            });

            /**
            * @config iframe
            * @description Boolean indicating whether or not the Overlay should
            * have an IFRAME shim; used to prevent SELECT elements from
            * poking through an Overlay instance in IE6.  When set to &quot;true&quot;,
            * the iframe shim is created when the Overlay instance is intially
            * made visible.
            * @type Boolean
            * @default true for IE6 and below, false for all other browsers.
            */
            cfg.addProperty(DEFAULT_CONFIG.IFRAME.key, {

                handler: this.configIframe,
                value: DEFAULT_CONFIG.IFRAME.value,
                validator: DEFAULT_CONFIG.IFRAME.validator,
                supercedes: DEFAULT_CONFIG.IFRAME.supercedes

            });

            /**
            * @config preventcontextoverlap
            * @description Boolean indicating whether or not the Overlay should overlap its
            * context element (defined using the &quot;context&quot; configuration property) when the
            * &quot;constraintoviewport&quot; configuration property is set to &quot;true&quot;.
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEFAULT_CONFIG.PREVENT_CONTEXT_OVERLAP.key, {
                value: DEFAULT_CONFIG.PREVENT_CONTEXT_OVERLAP.value,
                validator: DEFAULT_CONFIG.PREVENT_CONTEXT_OVERLAP.validator,
                supercedes: DEFAULT_CONFIG.PREVENT_CONTEXT_OVERLAP.supercedes
            });
        },

        /**
        * Moves the Overlay to the specified position. This function is
        * identical to calling this.cfg.setProperty(&quot;xy&quot;, [x,y]);
        * @method moveTo
        * @param {Number} x The Overlay's new x position
        * @param {Number} y The Overlay's new y position
        */
        moveTo: function (x, y) {
            this.cfg.setProperty(&quot;xy&quot;, [x, y]);
        },

        /**
        * Adds a CSS class (&quot;hide-scrollbars&quot;) and removes a CSS class
        * (&quot;show-scrollbars&quot;) to the Overlay to fix a bug in Gecko on Mac OS X
        * (https://bugzilla.mozilla.org/show_bug.cgi?id=187435)
        * @method hideMacGeckoScrollbars
        */
        hideMacGeckoScrollbars: function () {
            Dom.replaceClass(this.element, &quot;show-scrollbars&quot;, &quot;hide-scrollbars&quot;);
        },

        /**
        * Adds a CSS class (&quot;show-scrollbars&quot;) and removes a CSS class
        * (&quot;hide-scrollbars&quot;) to the Overlay to fix a bug in Gecko on Mac OS X
        * (https://bugzilla.mozilla.org/show_bug.cgi?id=187435)
        * @method showMacGeckoScrollbars
        */
        showMacGeckoScrollbars: function () {
            Dom.replaceClass(this.element, &quot;hide-scrollbars&quot;, &quot;show-scrollbars&quot;);
        },

        /**
         * Internal implementation to set the visibility of the overlay in the DOM.
         *
         * @method _setDomVisibility
         * @param {boolean} visible Whether to show or hide the Overlay's outer element
         * @protected
         */
        _setDomVisibility : function(show) {
            Dom.setStyle(this.element, &quot;visibility&quot;, (show) ? &quot;visible&quot; : &quot;hidden&quot;);
            var hiddenClass = Overlay.CSS_HIDDEN;

            if (show) {
                Dom.removeClass(this.element, hiddenClass);
            } else {
                Dom.addClass(this.element, hiddenClass);
            }
        },

        // BEGIN BUILT-IN PROPERTY EVENT HANDLERS //
        /**
        * The default event handler fired when the &quot;visible&quot; property is
        * changed.  This method is responsible for firing showEvent
        * and hideEvent.
        * @method configVisible
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configVisible: function (type, args, obj) {

            var visible = args[0],
                currentVis = Dom.getStyle(this.element, &quot;visibility&quot;),
                effects = this._cachedEffects || this._createEffects(this.cfg.getProperty(&quot;effect&quot;)),
                isMacGecko = (this.platform == &quot;mac&quot; &amp;&amp; UA.gecko),
                alreadySubscribed = Config.alreadySubscribed,
                ei, e, j, k, h,
                nEffectInstances;

            if (currentVis == &quot;inherit&quot;) {
                e = this.element.parentNode;

                while (e.nodeType != 9 &amp;&amp; e.nodeType != 11) {
                    currentVis = Dom.getStyle(e, &quot;visibility&quot;);

                    if (currentVis != &quot;inherit&quot;) {
                        break;
                    }

                    e = e.parentNode;
                }

                if (currentVis == &quot;inherit&quot;) {
                    currentVis = &quot;visible&quot;;
                }
            }

            if (visible) { // Show

                if (isMacGecko) {
                    this.showMacGeckoScrollbars();
                }

                if (effects) { // Animate in
                    if (visible) { // Animate in if not showing

                         // Fading out is a bit of a hack, but didn't want to risk doing
                         // something broader (e.g a generic this._animatingOut) for 2.9.0

                        if (currentVis != &quot;visible&quot; || currentVis === &quot;&quot; || this._fadingOut) {
                            if (this.beforeShowEvent.fire()) {

                                nEffectInstances = effects.length;

                                for (j = 0; j &lt; nEffectInstances; j++) {
                                    ei = effects[j];
                                    if (j === 0 &amp;&amp; !alreadySubscribed(ei.animateInCompleteEvent, this.showEvent.fire, this.showEvent)) {
                                        ei.animateInCompleteEvent.subscribe(this.showEvent.fire, this.showEvent, true);
                                    }
                                    ei.animateIn();
                                }
                            }
                        }
                    }
                } else { // Show
                    if (currentVis != &quot;visible&quot; || currentVis === &quot;&quot;) {
                        if (this.beforeShowEvent.fire()) {
                            this._setDomVisibility(true);
                            this.cfg.refireEvent(&quot;iframe&quot;);
                            this.showEvent.fire();
                        }
                    } else {
                        this._setDomVisibility(true);
                    }
                }
            } else { // Hide

                if (isMacGecko) {
                    this.hideMacGeckoScrollbars();
                }

                if (effects) { // Animate out if showing
                    if (currentVis == &quot;visible&quot; || this._fadingIn) {
                        if (this.beforeHideEvent.fire()) {
                            nEffectInstances = effects.length;
                            for (k = 0; k &lt; nEffectInstances; k++) {
                                h = effects[k];

                                if (k === 0 &amp;&amp; !alreadySubscribed(h.animateOutCompleteEvent, this.hideEvent.fire, this.hideEvent)) {
                                    h.animateOutCompleteEvent.subscribe(this.hideEvent.fire, this.hideEvent, true);
                                }
                                h.animateOut();
                            }
                        }

                    } else if (currentVis === &quot;&quot;) {
                        this._setDomVisibility(false);
                    }

                } else { // Simple hide

                    if (currentVis == &quot;visible&quot; || currentVis === &quot;&quot;) {
                        if (this.beforeHideEvent.fire()) {
                            this._setDomVisibility(false);
                            this.hideEvent.fire();
                        }
                    } else {
                        this._setDomVisibility(false);
                    }
                }
            }
        },

        /**
        * Fixed center event handler used for centering on scroll/resize, but only if
        * the overlay is visible and, if &quot;fixedcenter&quot; is set to &quot;contained&quot;, only if
        * the overlay fits within the viewport.
        *
        * @method doCenterOnDOMEvent
        */
        doCenterOnDOMEvent: function () {
            var cfg = this.cfg,
                fc = cfg.getProperty(&quot;fixedcenter&quot;);

            if (cfg.getProperty(&quot;visible&quot;)) {
                if (fc &amp;&amp; (fc !== _CONTAINED || this.fitsInViewport())) {
                    this.center();
                }
            }
        },

        /**
         * Determines if the Overlay (including the offset value defined by Overlay.VIEWPORT_OFFSET)
         * will fit entirely inside the viewport, in both dimensions - width and height.
         *
         * @method fitsInViewport
         * @return boolean true if the Overlay will fit, false if not
         */
        fitsInViewport : function() {
            var nViewportOffset = Overlay.VIEWPORT_OFFSET,
                element = this.element,
                elementWidth = element.offsetWidth,
                elementHeight = element.offsetHeight,
                viewportWidth = Dom.getViewportWidth(),
                viewportHeight = Dom.getViewportHeight();

            return ((elementWidth + nViewportOffset &lt; viewportWidth) &amp;&amp; (elementHeight + nViewportOffset &lt; viewportHeight));
        },

        /**
        * The default event handler fired when the &quot;fixedcenter&quot; property
        * is changed.
        * @method configFixedCenter
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configFixedCenter: function (type, args, obj) {

            var val = args[0],
                alreadySubscribed = Config.alreadySubscribed,
                windowResizeEvent = Overlay.windowResizeEvent,
                windowScrollEvent = Overlay.windowScrollEvent;

            if (val) {
                this.center();

                if (!alreadySubscribed(this.beforeShowEvent, this.center)) {
                    this.beforeShowEvent.subscribe(this.center);
                }

                if (!alreadySubscribed(windowResizeEvent, this.doCenterOnDOMEvent, this)) {
                    windowResizeEvent.subscribe(this.doCenterOnDOMEvent, this, true);
                }

                if (!alreadySubscribed(windowScrollEvent, this.doCenterOnDOMEvent, this)) {
                    windowScrollEvent.subscribe(this.doCenterOnDOMEvent, this, true);
                }

            } else {
                this.beforeShowEvent.unsubscribe(this.center);

                windowResizeEvent.unsubscribe(this.doCenterOnDOMEvent, this);
                windowScrollEvent.unsubscribe(this.doCenterOnDOMEvent, this);
            }
        },

        /**
        * The default event handler fired when the &quot;height&quot; property is changed.
        * @method configHeight
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configHeight: function (type, args, obj) {

            var height = args[0],
                el = this.element;

            Dom.setStyle(el, &quot;height&quot;, height);
            this.cfg.refireEvent(&quot;iframe&quot;);
        },

        /**
         * The default event handler fired when the &quot;autofillheight&quot; property is changed.
         * @method configAutoFillHeight
         *
         * @param {String} type The CustomEvent type (usually the property name)
         * @param {Object[]} args The CustomEvent arguments. For configuration
         * handlers, args[0] will equal the newly applied value for the property.
         * @param {Object} obj The scope object. For configuration handlers,
         * this will usually equal the owner.
         */
        configAutoFillHeight: function (type, args, obj) {
            var fillEl = args[0],
                cfg = this.cfg,
                autoFillHeight = &quot;autofillheight&quot;,
                height = &quot;height&quot;,
                currEl = cfg.getProperty(autoFillHeight),
                autoFill = this._autoFillOnHeightChange;

            cfg.unsubscribeFromConfigEvent(height, autoFill);
            Module.textResizeEvent.unsubscribe(autoFill);
            this.changeContentEvent.unsubscribe(autoFill);

            if (currEl &amp;&amp; fillEl !== currEl &amp;&amp; this[currEl]) {
                Dom.setStyle(this[currEl], height, &quot;&quot;);
            }

            if (fillEl) {
                fillEl = Lang.trim(fillEl.toLowerCase());

                cfg.subscribeToConfigEvent(height, autoFill, this[fillEl], this);
                Module.textResizeEvent.subscribe(autoFill, this[fillEl], this);
                this.changeContentEvent.subscribe(autoFill, this[fillEl], this);

                cfg.setProperty(autoFillHeight, fillEl, true);
            }
        },

        /**
        * The default event handler fired when the &quot;width&quot; property is changed.
        * @method configWidth
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configWidth: function (type, args, obj) {

            var width = args[0],
                el = this.element;

            Dom.setStyle(el, &quot;width&quot;, width);
            this.cfg.refireEvent(&quot;iframe&quot;);
        },

        /**
        * The default event handler fired when the &quot;zIndex&quot; property is changed.
        * @method configzIndex
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configzIndex: function (type, args, obj) {

            var zIndex = args[0],
                el = this.element;

            if (! zIndex) {
                zIndex = Dom.getStyle(el, &quot;zIndex&quot;);
                if (! zIndex || isNaN(zIndex)) {
                    zIndex = 0;
                }
            }

            if (this.iframe || this.cfg.getProperty(&quot;iframe&quot;) === true) {
                if (zIndex &lt;= 0) {
                    zIndex = 1;
                }
            }

            Dom.setStyle(el, &quot;zIndex&quot;, zIndex);
            this.cfg.setProperty(&quot;zIndex&quot;, zIndex, true);

            if (this.iframe) {
                this.stackIframe();
            }
        },

        /**
        * The default event handler fired when the &quot;xy&quot; property is changed.
        * @method configXY
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configXY: function (type, args, obj) {

            var pos = args[0],
                x = pos[0],
                y = pos[1];

            this.cfg.setProperty(&quot;x&quot;, x);
            this.cfg.setProperty(&quot;y&quot;, y);

            this.beforeMoveEvent.fire([x, y]);

            x = this.cfg.getProperty(&quot;x&quot;);
            y = this.cfg.getProperty(&quot;y&quot;);

            YAHOO.log((&quot;xy: &quot; + [x, y]), &quot;iframe&quot;);

            this.cfg.refireEvent(&quot;iframe&quot;);
            this.moveEvent.fire([x, y]);
        },

        /**
        * The default event handler fired when the &quot;x&quot; property is changed.
        * @method configX
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configX: function (type, args, obj) {

            var x = args[0],
                y = this.cfg.getProperty(&quot;y&quot;);

            this.cfg.setProperty(&quot;x&quot;, x, true);
            this.cfg.setProperty(&quot;y&quot;, y, true);

            this.beforeMoveEvent.fire([x, y]);

            x = this.cfg.getProperty(&quot;x&quot;);
            y = this.cfg.getProperty(&quot;y&quot;);

            Dom.setX(this.element, x, true);

            this.cfg.setProperty(&quot;xy&quot;, [x, y], true);

            this.cfg.refireEvent(&quot;iframe&quot;);
            this.moveEvent.fire([x, y]);
        },

        /**
        * The default event handler fired when the &quot;y&quot; property is changed.
        * @method configY
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configY: function (type, args, obj) {

            var x = this.cfg.getProperty(&quot;x&quot;),
                y = args[0];

            this.cfg.setProperty(&quot;x&quot;, x, true);
            this.cfg.setProperty(&quot;y&quot;, y, true);

            this.beforeMoveEvent.fire([x, y]);

            x = this.cfg.getProperty(&quot;x&quot;);
            y = this.cfg.getProperty(&quot;y&quot;);

            Dom.setY(this.element, y, true);

            this.cfg.setProperty(&quot;xy&quot;, [x, y], true);

            this.cfg.refireEvent(&quot;iframe&quot;);
            this.moveEvent.fire([x, y]);
        },

        /**
        * Shows the iframe shim, if it has been enabled.
        * @method showIframe
        */
        showIframe: function () {

            var oIFrame = this.iframe,
                oParentNode;

            if (oIFrame) {
                oParentNode = this.element.parentNode;

                if (oParentNode != oIFrame.parentNode) {
                    this._addToParent(oParentNode, oIFrame);
                }
                oIFrame.style.display = &quot;block&quot;;
            }
        },

        /**
        * Hides the iframe shim, if it has been enabled.
        * @method hideIframe
        */
        hideIframe: function () {
            if (this.iframe) {
                this.iframe.style.display = &quot;none&quot;;
            }
        },

        /**
        * Syncronizes the size and position of iframe shim to that of its
        * corresponding Overlay instance.
        * @method syncIframe
        */
        syncIframe: function () {

            var oIFrame = this.iframe,
                oElement = this.element,
                nOffset = Overlay.IFRAME_OFFSET,
                nDimensionOffset = (nOffset * 2),
                aXY;

            if (oIFrame) {
                // Size &lt;iframe&gt;
                oIFrame.style.width = (oElement.offsetWidth + nDimensionOffset + &quot;px&quot;);
                oIFrame.style.height = (oElement.offsetHeight + nDimensionOffset + &quot;px&quot;);

                // Position &lt;iframe&gt;
                aXY = this.cfg.getProperty(&quot;xy&quot;);

                if (!Lang.isArray(aXY) || (isNaN(aXY[0]) || isNaN(aXY[1]))) {
                    this.syncPosition();
                    aXY = this.cfg.getProperty(&quot;xy&quot;);
                }
                Dom.setXY(oIFrame, [(aXY[0] - nOffset), (aXY[1] - nOffset)]);
            }
        },

        /**
         * Sets the zindex of the iframe shim, if it exists, based on the zindex of
         * the Overlay element. The zindex of the iframe is set to be one less
         * than the Overlay element's zindex.
         *
         * &lt;p&gt;NOTE: This method will not bump up the zindex of the Overlay element
         * to ensure that the iframe shim has a non-negative zindex.
         * If you require the iframe zindex to be 0 or higher, the zindex of
         * the Overlay element should be set to a value greater than 0, before
         * this method is called.
         * &lt;/p&gt;
         * @method stackIframe
         */
        stackIframe: function () {
            if (this.iframe) {
                var overlayZ = Dom.getStyle(this.element, &quot;zIndex&quot;);
                if (!YAHOO.lang.isUndefined(overlayZ) &amp;&amp; !isNaN(overlayZ)) {
                    Dom.setStyle(this.iframe, &quot;zIndex&quot;, (overlayZ - 1));
                }
            }
        },

        /**
        * The default event handler fired when the &quot;iframe&quot; property is changed.
        * @method configIframe
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configIframe: function (type, args, obj) {

            var bIFrame = args[0];

            function createIFrame() {

                var oIFrame = this.iframe,
                    oElement = this.element,
                    oParent;

                if (!oIFrame) {
                    if (!m_oIFrameTemplate) {
                        m_oIFrameTemplate = document.createElement(&quot;iframe&quot;);

                        if (this.isSecure) {
                            m_oIFrameTemplate.src = Overlay.IFRAME_SRC;
                        }

                        /*
                            Set the opacity of the &lt;iframe&gt; to 0 so that it
                            doesn't modify the opacity of any transparent
                            elements that may be on top of it (like a shadow).
                        */
                        if (UA.ie) {
                            m_oIFrameTemplate.style.filter = &quot;alpha(opacity=0)&quot;;
                            /*
                                 Need to set the &quot;frameBorder&quot; property to 0
                                 supress the default &lt;iframe&gt; border in IE.
                                 Setting the CSS &quot;border&quot; property alone
                                 doesn't supress it.
                            */
                            m_oIFrameTemplate.frameBorder = 0;
                        }
                        else {
                            m_oIFrameTemplate.style.opacity = &quot;0&quot;;
                        }

                        m_oIFrameTemplate.style.position = &quot;absolute&quot;;
                        m_oIFrameTemplate.style.border = &quot;none&quot;;
                        m_oIFrameTemplate.style.margin = &quot;0&quot;;
                        m_oIFrameTemplate.style.padding = &quot;0&quot;;
                        m_oIFrameTemplate.style.display = &quot;none&quot;;
                        m_oIFrameTemplate.tabIndex = -1;
                        m_oIFrameTemplate.className = Overlay.CSS_IFRAME;
                    }

                    oIFrame = m_oIFrameTemplate.cloneNode(false);
                    oIFrame.id = this.id + &quot;_f&quot;;
                    oParent = oElement.parentNode;

                    var parentNode = oParent || document.body;

                    this._addToParent(parentNode, oIFrame);
                    this.iframe = oIFrame;
                }

                /*
                     Show the &lt;iframe&gt; before positioning it since the &quot;setXY&quot;
                     method of DOM requires the element be in the document
                     and visible.
                */
                this.showIframe();

                /*
                     Syncronize the size and position of the &lt;iframe&gt; to that
                     of the Overlay.
                */
                this.syncIframe();
                this.stackIframe();

                // Add event listeners to update the &lt;iframe&gt; when necessary
                if (!this._hasIframeEventListeners) {
                    this.showEvent.subscribe(this.showIframe);
                    this.hideEvent.subscribe(this.hideIframe);
                    this.changeContentEvent.subscribe(this.syncIframe);

                    this._hasIframeEventListeners = true;
                }
            }

            function onBeforeShow() {
                createIFrame.call(this);
                this.beforeShowEvent.unsubscribe(onBeforeShow);
                this._iframeDeferred = false;
            }

            if (bIFrame) { // &lt;iframe&gt; shim is enabled

                if (this.cfg.getProperty(&quot;visible&quot;)) {
                    createIFrame.call(this);
                } else {
                    if (!this._iframeDeferred) {
                        this.beforeShowEvent.subscribe(onBeforeShow);
                        this._iframeDeferred = true;
                    }
                }

            } else {    // &lt;iframe&gt; shim is disabled
                this.hideIframe();

                if (this._hasIframeEventListeners) {
                    this.showEvent.unsubscribe(this.showIframe);
                    this.hideEvent.unsubscribe(this.hideIframe);
                    this.changeContentEvent.unsubscribe(this.syncIframe);

                    this._hasIframeEventListeners = false;
                }
            }
        },

        /**
         * Set's the container's XY value from DOM if not already set.
         *
         * Differs from syncPosition, in that the XY value is only sync'd with DOM if
         * not already set. The method also refire's the XY config property event, so any
         * beforeMove, Move event listeners are invoked.
         *
         * @method _primeXYFromDOM
         * @protected
         */
        _primeXYFromDOM : function() {
            if (YAHOO.lang.isUndefined(this.cfg.getProperty(&quot;xy&quot;))) {
                // Set CFG XY based on DOM XY
                this.syncPosition();
                // Account for XY being set silently in syncPosition (no moveTo fired/called)
                this.cfg.refireEvent(&quot;xy&quot;);
                this.beforeShowEvent.unsubscribe(this._primeXYFromDOM);
            }
        },

        /**
        * The default event handler fired when the &quot;constraintoviewport&quot;
        * property is changed.
        * @method configConstrainToViewport
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for
        * the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configConstrainToViewport: function (type, args, obj) {
            var val = args[0];

            if (val) {
                if (! Config.alreadySubscribed(this.beforeMoveEvent, this.enforceConstraints, this)) {
                    this.beforeMoveEvent.subscribe(this.enforceConstraints, this, true);
                }
                if (! Config.alreadySubscribed(this.beforeShowEvent, this._primeXYFromDOM)) {
                    this.beforeShowEvent.subscribe(this._primeXYFromDOM);
                }
            } else {
                this.beforeShowEvent.unsubscribe(this._primeXYFromDOM);
                this.beforeMoveEvent.unsubscribe(this.enforceConstraints, this);
            }
        },

         /**
        * The default event handler fired when the &quot;context&quot; property
        * is changed.
        *
        * @method configContext
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configContext: function (type, args, obj) {

            var contextArgs = args[0],
                contextEl,
                elementMagnetCorner,
                contextMagnetCorner,
                triggers,
                offset,
                defTriggers = this.CONTEXT_TRIGGERS;

            if (contextArgs) {

                contextEl = contextArgs[0];
                elementMagnetCorner = contextArgs[1];
                contextMagnetCorner = contextArgs[2];
                triggers = contextArgs[3];
                offset = contextArgs[4];

                if (defTriggers &amp;&amp; defTriggers.length &gt; 0) {
                    triggers = (triggers || []).concat(defTriggers);
                }

                if (contextEl) {
                    if (typeof contextEl == &quot;string&quot;) {
                        this.cfg.setProperty(&quot;context&quot;, [
                                document.getElementById(contextEl),
                                elementMagnetCorner,
                                contextMagnetCorner,
                                triggers,
                                offset],
                                true);
                    }

                    if (elementMagnetCorner &amp;&amp; contextMagnetCorner) {
                        this.align(elementMagnetCorner, contextMagnetCorner, offset);
                    }

                    if (this._contextTriggers) {
                        // Unsubscribe Old Set
                        this._processTriggers(this._contextTriggers, _UNSUBSCRIBE, this._alignOnTrigger);
                    }

                    if (triggers) {
                        // Subscribe New Set
                        this._processTriggers(triggers, _SUBSCRIBE, this._alignOnTrigger);
                        this._contextTriggers = triggers;
                    }
                }
            }
        },

        /**
         * Custom Event handler for context alignment triggers. Invokes the align method
         *
         * @method _alignOnTrigger
         * @protected
         *
         * @param {String} type The event type (not used by the default implementation)
         * @param {Any[]} args The array of arguments for the trigger event (not used by the default implementation)
         */
        _alignOnTrigger: function(type, args) {
            this.align();
        },

        /**
         * Helper method to locate the custom event instance for the event name string
         * passed in. As a convenience measure, any custom events passed in are returned.
         *
         * @method _findTriggerCE
         * @private
         *
         * @param {String|CustomEvent} t Either a CustomEvent, or event type (e.g. &quot;windowScroll&quot;) for which a
         * custom event instance needs to be looked up from the Overlay._TRIGGER_MAP.
         */
        _findTriggerCE : function(t) {
            var tce = null;
            if (t instanceof CustomEvent) {
                tce = t;
            } else if (Overlay._TRIGGER_MAP[t]) {
                tce = Overlay._TRIGGER_MAP[t];
            }
            return tce;
        },

        /**
         * Utility method that subscribes or unsubscribes the given
         * function from the list of trigger events provided.
         *
         * @method _processTriggers
         * @protected
         *
         * @param {Array[String|CustomEvent]} triggers An array of either CustomEvents, event type strings
         * (e.g. &quot;beforeShow&quot;, &quot;windowScroll&quot;) to/from which the provided function should be
         * subscribed/unsubscribed respectively.
         *
         * @param {String} mode Either &quot;subscribe&quot; or &quot;unsubscribe&quot;, specifying whether or not
         * we are subscribing or unsubscribing trigger listeners
         *
         * @param {Function} fn The function to be subscribed/unsubscribed to/from the trigger event.
         * Context is always set to the overlay instance, and no additional object argument
         * get passed to the subscribed function.
         */
        _processTriggers : function(triggers, mode, fn) {
            var t, tce;

            for (var i = 0, l = triggers.length; i &lt; l; ++i) {
                t = triggers[i];
                tce = this._findTriggerCE(t);
                if (tce) {
                    tce[mode](fn, this, true);
                } else {
                    this[mode](t, fn);
                }
            }
        },

        // END BUILT-IN PROPERTY EVENT HANDLERS //
        /**
        * Aligns the Overlay to its context element using the specified corner
        * points (represented by the constants TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT,
        * and BOTTOM_RIGHT.
        * @method align
        * @param {String} elementAlign  The String representing the corner of
        * the Overlay that should be aligned to the context element
        * @param {String} contextAlign  The corner of the context element
        * that the elementAlign corner should stick to.
        * @param {Number[]} xyOffset Optional. A 2 element array specifying the x and y pixel offsets which should be applied
        * after aligning the element and context corners. For example, passing in [5, -10] for this value, would offset the
        * Overlay by 5 pixels along the X axis (horizontally) and -10 pixels along the Y axis (vertically) after aligning the specified corners.
        */
        align: function (elementAlign, contextAlign, xyOffset) {

            var contextArgs = this.cfg.getProperty(&quot;context&quot;),
                me = this,
                context,
                element,
                contextRegion;

            function doAlign(v, h) {

                var alignX = null, alignY = null;

                switch (elementAlign) {

                    case Overlay.TOP_LEFT:
                        alignX = h;
                        alignY = v;
                        break;

                    case Overlay.TOP_RIGHT:
                        alignX = h - element.offsetWidth;
                        alignY = v;
                        break;

                    case Overlay.BOTTOM_LEFT:
                        alignX = h;
                        alignY = v - element.offsetHeight;
                        break;

                    case Overlay.BOTTOM_RIGHT:
                        alignX = h - element.offsetWidth;
                        alignY = v - element.offsetHeight;
                        break;
                }

                if (alignX !== null &amp;&amp; alignY !== null) {
                    if (xyOffset) {
                        alignX += xyOffset[0];
                        alignY += xyOffset[1];
                    }
                    me.moveTo(alignX, alignY);
                }
            }

            if (contextArgs) {
                context = contextArgs[0];
                element = this.element;
                me = this;

                if (! elementAlign) {
                    elementAlign = contextArgs[1];
                }

                if (! contextAlign) {
                    contextAlign = contextArgs[2];
                }

                if (!xyOffset &amp;&amp; contextArgs[4]) {
                    xyOffset = contextArgs[4];
                }

                if (element &amp;&amp; context) {
                    contextRegion = Dom.getRegion(context);

                    switch (contextAlign) {

                        case Overlay.TOP_LEFT:
                            doAlign(contextRegion.top, contextRegion.left);
                            break;

                        case Overlay.TOP_RIGHT:
                            doAlign(contextRegion.top, contextRegion.right);
                            break;

                        case Overlay.BOTTOM_LEFT:
                            doAlign(contextRegion.bottom, contextRegion.left);
                            break;

                        case Overlay.BOTTOM_RIGHT:
                            doAlign(contextRegion.bottom, contextRegion.right);
                            break;
                    }
                }
            }
        },

        /**
        * The default event handler executed when the moveEvent is fired, if the
        * &quot;constraintoviewport&quot; is set to true.
        * @method enforceConstraints
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        enforceConstraints: function (type, args, obj) {
            var pos = args[0];

            var cXY = this.getConstrainedXY(pos[0], pos[1]);
            this.cfg.setProperty(&quot;x&quot;, cXY[0], true);
            this.cfg.setProperty(&quot;y&quot;, cXY[1], true);
            this.cfg.setProperty(&quot;xy&quot;, cXY, true);
        },

        /**
         * Shared implementation method for getConstrainedX and getConstrainedY.
         *
         * &lt;p&gt;
         * Given a coordinate value, returns the calculated coordinate required to
         * position the Overlay if it is to be constrained to the viewport, based on the
         * current element size, viewport dimensions, scroll values and preventoverlap
         * settings
         * &lt;/p&gt;
         *
         * @method _getConstrainedPos
         * @protected
         * @param {String} pos The coordinate which needs to be constrained, either &quot;x&quot; or &quot;y&quot;
         * @param {Number} The coordinate value which needs to be constrained
         * @return {Number} The constrained coordinate value
         */
        _getConstrainedPos: function(pos, val) {

            var overlayEl = this.element,

                buffer = Overlay.VIEWPORT_OFFSET,

                x = (pos == &quot;x&quot;),

                overlaySize      = (x) ? overlayEl.offsetWidth : overlayEl.offsetHeight,
                viewportSize     = (x) ? Dom.getViewportWidth() : Dom.getViewportHeight(),
                docScroll        = (x) ? Dom.getDocumentScrollLeft() : Dom.getDocumentScrollTop(),
                overlapPositions = (x) ? Overlay.PREVENT_OVERLAP_X : Overlay.PREVENT_OVERLAP_Y,

                context = this.cfg.getProperty(&quot;context&quot;),

                bOverlayFitsInViewport = (overlaySize + buffer &lt; viewportSize),
                bPreventContextOverlap = this.cfg.getProperty(&quot;preventcontextoverlap&quot;) &amp;&amp; context &amp;&amp; overlapPositions[(context[1] + context[2])],

                minConstraint = docScroll + buffer,
                maxConstraint = docScroll + viewportSize - overlaySize - buffer,

                constrainedVal = val;

            if (val &lt; minConstraint || val &gt; maxConstraint) {
                if (bPreventContextOverlap) {
                    constrainedVal = this._preventOverlap(pos, context[0], overlaySize, viewportSize, docScroll);
                } else {
                    if (bOverlayFitsInViewport) {
                        if (val &lt; minConstraint) {
                            constrainedVal = minConstraint;
                        } else if (val &gt; maxConstraint) {
                            constrainedVal = maxConstraint;
                        }
                    } else {
                        constrainedVal = minConstraint;
                    }
                }
            }

            return constrainedVal;
        },

        /**
         * Helper method, used to position the Overlap to prevent overlap with the
         * context element (used when preventcontextoverlap is enabled)
         *
         * @method _preventOverlap
         * @protected
         * @param {String} pos The coordinate to prevent overlap for, either &quot;x&quot; or &quot;y&quot;.
         * @param {HTMLElement} contextEl The context element
         * @param {Number} overlaySize The related overlay dimension value (for &quot;x&quot;, the width, for &quot;y&quot;, the height)
         * @param {Number} viewportSize The related viewport dimension value (for &quot;x&quot;, the width, for &quot;y&quot;, the height)
         * @param {Object} docScroll  The related document scroll value (for &quot;x&quot;, the scrollLeft, for &quot;y&quot;, the scrollTop)
         *
         * @return {Number} The new coordinate value which was set to prevent overlap
         */
        _preventOverlap : function(pos, contextEl, overlaySize, viewportSize, docScroll) {

            var x = (pos == &quot;x&quot;),

                buffer = Overlay.VIEWPORT_OFFSET,

                overlay = this,

                contextElPos   = ((x) ? Dom.getX(contextEl) : Dom.getY(contextEl)) - docScroll,
                contextElSize  = (x) ? contextEl.offsetWidth : contextEl.offsetHeight,

                minRegionSize = contextElPos - buffer,
                maxRegionSize = (viewportSize - (contextElPos + contextElSize)) - buffer,

                bFlipped = false,

                flip = function () {
                    var flippedVal;

                    if ((overlay.cfg.getProperty(pos) - docScroll) &gt; contextElPos) {
                        flippedVal = (contextElPos - overlaySize);
                    } else {
                        flippedVal = (contextElPos + contextElSize);
                    }

                    overlay.cfg.setProperty(pos, (flippedVal + docScroll), true);

                    return flippedVal;
                },

                setPosition = function () {

                    var displayRegionSize = ((overlay.cfg.getProperty(pos) - docScroll) &gt; contextElPos) ? maxRegionSize : minRegionSize,
                        position;

                    if (overlaySize &gt; displayRegionSize) {
                        if (bFlipped) {
                            /*
                                 All possible positions and values have been
                                 tried, but none were successful, so fall back
                                 to the original size and position.
                            */
                            flip();
                        } else {
                            flip();
                            bFlipped = true;
                            position = setPosition();
                        }
                    }

                    return position;
                };

            setPosition();

            return this.cfg.getProperty(pos);
        },

        /**
         * Given x coordinate value, returns the calculated x coordinate required to
         * position the Overlay if it is to be constrained to the viewport, based on the
         * current element size, viewport dimensions and scroll values.
         *
         * @param {Number} x The X coordinate value to be constrained
         * @return {Number} The constrained x coordinate
         */
        getConstrainedX: function (x) {
            return this._getConstrainedPos(&quot;x&quot;, x);
        },

        /**
         * Given y coordinate value, returns the calculated y coordinate required to
         * position the Overlay if it is to be constrained to the viewport, based on the
         * current element size, viewport dimensions and scroll values.
         *
         * @param {Number} y The Y coordinate value to be constrained
         * @return {Number} The constrained y coordinate
         */
        getConstrainedY : function (y) {
            return this._getConstrainedPos(&quot;y&quot;, y);
        },

        /**
         * Given x, y coordinate values, returns the calculated coordinates required to
         * position the Overlay if it is to be constrained to the viewport, based on the
         * current element size, viewport dimensions and scroll values.
         *
         * @param {Number} x The X coordinate value to be constrained
         * @param {Number} y The Y coordinate value to be constrained
         * @return {Array} The constrained x and y coordinates at index 0 and 1 respectively;
         */
        getConstrainedXY: function(x, y) {
            return [this.getConstrainedX(x), this.getConstrainedY(y)];
        },

        /**
        * Centers the container in the viewport.
        * @method center
        */
        center: function () {

            var nViewportOffset = Overlay.VIEWPORT_OFFSET,
                elementWidth = this.element.offsetWidth,
                elementHeight = this.element.offsetHeight,
                viewPortWidth = Dom.getViewportWidth(),
                viewPortHeight = Dom.getViewportHeight(),
                x,
                y;

            if (elementWidth &lt; viewPortWidth) {
                x = (viewPortWidth / 2) - (elementWidth / 2) + Dom.getDocumentScrollLeft();
            } else {
                x = nViewportOffset + Dom.getDocumentScrollLeft();
            }

            if (elementHeight &lt; viewPortHeight) {
                y = (viewPortHeight / 2) - (elementHeight / 2) + Dom.getDocumentScrollTop();
            } else {
                y = nViewportOffset + Dom.getDocumentScrollTop();
            }

            this.cfg.setProperty(&quot;xy&quot;, [parseInt(x, 10), parseInt(y, 10)]);
            this.cfg.refireEvent(&quot;iframe&quot;);

            if (UA.webkit) {
                this.forceContainerRedraw();
            }
        },

        /**
        * Synchronizes the Panel's &quot;xy&quot;, &quot;x&quot;, and &quot;y&quot; properties with the
        * Panel's position in the DOM. This is primarily used to update
        * position information during drag &amp; drop.
        * @method syncPosition
        */
        syncPosition: function () {

            var pos = Dom.getXY(this.element);

            this.cfg.setProperty(&quot;x&quot;, pos[0], true);
            this.cfg.setProperty(&quot;y&quot;, pos[1], true);
            this.cfg.setProperty(&quot;xy&quot;, pos, true);

        },

        /**
        * Event handler fired when the resize monitor element is resized.
        * @method onDomResize
        * @param {DOMEvent} e The resize DOM event
        * @param {Object} obj The scope object
        */
        onDomResize: function (e, obj) {

            var me = this;

            Overlay.superclass.onDomResize.call(this, e, obj);

            setTimeout(function () {
                me.syncPosition();
                me.cfg.refireEvent(&quot;iframe&quot;);
                me.cfg.refireEvent(&quot;context&quot;);
            }, 0);
        },

        /**
         * Determines the content box height of the given element (height of the element, without padding or borders) in pixels.
         *
         * @method _getComputedHeight
         * @private
         * @param {HTMLElement} el The element for which the content height needs to be determined
         * @return {Number} The content box height of the given element, or null if it could not be determined.
         */
        _getComputedHeight : (function() {

            if (document.defaultView &amp;&amp; document.defaultView.getComputedStyle) {
                return function(el) {
                    var height = null;
                    if (el.ownerDocument &amp;&amp; el.ownerDocument.defaultView) {
                        var computed = el.ownerDocument.defaultView.getComputedStyle(el, '');
                        if (computed) {
                            height = parseInt(computed.height, 10);
                        }
                    }
                    return (Lang.isNumber(height)) ? height : null;
                };
            } else {
                return function(el) {
                    var height = null;
                    if (el.style.pixelHeight) {
                        height = el.style.pixelHeight;
                    }
                    return (Lang.isNumber(height)) ? height : null;
                };
            }
        })(),

        /**
         * autofillheight validator. Verifies that the autofill value is either null
         * or one of the strings : &quot;body&quot;, &quot;header&quot; or &quot;footer&quot;.
         *
         * @method _validateAutoFillHeight
         * @protected
         * @param {String} val
         * @return true, if valid, false otherwise
         */
        _validateAutoFillHeight : function(val) {
            return (!val) || (Lang.isString(val) &amp;&amp; Overlay.STD_MOD_RE.test(val));
        },

        /**
         * The default custom event handler executed when the overlay's height is changed,
         * if the autofillheight property has been set.
         *
         * @method _autoFillOnHeightChange
         * @protected
         * @param {String} type The event type
         * @param {Array} args The array of arguments passed to event subscribers
         * @param {HTMLElement} el The header, body or footer element which is to be resized to fill
         * out the containers height
         */
        _autoFillOnHeightChange : function(type, args, el) {
            var height = this.cfg.getProperty(&quot;height&quot;);
            if ((height &amp;&amp; height !== &quot;auto&quot;) || (height === 0)) {
                this.fillHeight(el);
            }
        },

        /**
         * Returns the sub-pixel height of the el, using getBoundingClientRect, if available,
         * otherwise returns the offsetHeight
         * @method _getPreciseHeight
         * @private
         * @param {HTMLElement} el
         * @return {Float} The sub-pixel height if supported by the browser, else the rounded height.
         */
        _getPreciseHeight : function(el) {
            var height = el.offsetHeight;

            if (el.getBoundingClientRect) {
                var rect = el.getBoundingClientRect();
                height = rect.bottom - rect.top;
            }

            return height;
        },

        /**
         * &lt;p&gt;
         * Sets the height on the provided header, body or footer element to
         * fill out the height of the container. It determines the height of the
         * containers content box, based on it's configured height value, and
         * sets the height of the autofillheight element to fill out any
         * space remaining after the other standard module element heights
         * have been accounted for.
         * &lt;/p&gt;
         * &lt;p&gt;&lt;strong&gt;NOTE:&lt;/strong&gt; This method is not designed to work if an explicit
         * height has not been set on the container, since for an &quot;auto&quot; height container,
         * the heights of the header/body/footer will drive the height of the container.&lt;/p&gt;
         *
         * @method fillHeight
         * @param {HTMLElement} el The element which should be resized to fill out the height
         * of the container element.
         */
        fillHeight : function(el) {
            if (el) {
                var container = this.innerElement || this.element,
                    containerEls = [this.header, this.body, this.footer],
                    containerEl,
                    total = 0,
                    filled = 0,
                    remaining = 0,
                    validEl = false;

                for (var i = 0, l = containerEls.length; i &lt; l; i++) {
                    containerEl = containerEls[i];
                    if (containerEl) {
                        if (el !== containerEl) {
                            filled += this._getPreciseHeight(containerEl);
                        } else {
                            validEl = true;
                        }
                    }
                }

                if (validEl) {

                    if (UA.ie || UA.opera) {
                        // Need to set height to 0, to allow height to be reduced
                        Dom.setStyle(el, 'height', 0 + 'px');
                    }

                    total = this._getComputedHeight(container);

                    // Fallback, if we can't get computed value for content height
                    if (total === null) {
                        Dom.addClass(container, &quot;yui-override-padding&quot;);
                        total = container.clientHeight; // Content, No Border, 0 Padding (set by yui-override-padding)
                        Dom.removeClass(container, &quot;yui-override-padding&quot;);
                    }

                    remaining = Math.max(total - filled, 0);

                    Dom.setStyle(el, &quot;height&quot;, remaining + &quot;px&quot;);

                    // Re-adjust height if required, to account for el padding and border
                    if (el.offsetHeight != remaining) {
                        remaining = Math.max(remaining - (el.offsetHeight - remaining), 0);
                    }
                    Dom.setStyle(el, &quot;height&quot;, remaining + &quot;px&quot;);
                }
            }
        },

        /**
        * Places the Overlay on top of all other instances of
        * YAHOO.widget.Overlay.
        * @method bringToTop
        */
        bringToTop: function () {

            var aOverlays = [],
                oElement = this.element;

            function compareZIndexDesc(p_oOverlay1, p_oOverlay2) {

                var sZIndex1 = Dom.getStyle(p_oOverlay1, &quot;zIndex&quot;),
                    sZIndex2 = Dom.getStyle(p_oOverlay2, &quot;zIndex&quot;),

                    nZIndex1 = (!sZIndex1 || isNaN(sZIndex1)) ? 0 : parseInt(sZIndex1, 10),
                    nZIndex2 = (!sZIndex2 || isNaN(sZIndex2)) ? 0 : parseInt(sZIndex2, 10);

                if (nZIndex1 &gt; nZIndex2) {
                    return -1;
                } else if (nZIndex1 &lt; nZIndex2) {
                    return 1;
                } else {
                    return 0;
                }
            }

            function isOverlayElement(p_oElement) {

                var isOverlay = Dom.hasClass(p_oElement, Overlay.CSS_OVERLAY),
                    Panel = YAHOO.widget.Panel;

                if (isOverlay &amp;&amp; !Dom.isAncestor(oElement, p_oElement)) {
                    if (Panel &amp;&amp; Dom.hasClass(p_oElement, Panel.CSS_PANEL)) {
                        aOverlays[aOverlays.length] = p_oElement.parentNode;
                    } else {
                        aOverlays[aOverlays.length] = p_oElement;
                    }
                }
            }

            Dom.getElementsBy(isOverlayElement, &quot;div&quot;, document.body);

            aOverlays.sort(compareZIndexDesc);

            var oTopOverlay = aOverlays[0],
                nTopZIndex;

            if (oTopOverlay) {
                nTopZIndex = Dom.getStyle(oTopOverlay, &quot;zIndex&quot;);

                if (!isNaN(nTopZIndex)) {
                    var bRequiresBump = false;

                    if (oTopOverlay != oElement) {
                        bRequiresBump = true;
                    } else if (aOverlays.length &gt; 1) {
                        var nNextZIndex = Dom.getStyle(aOverlays[1], &quot;zIndex&quot;);
                        // Don't rely on DOM order to stack if 2 overlays are at the same zindex.
                        if (!isNaN(nNextZIndex) &amp;&amp; (nTopZIndex == nNextZIndex)) {
                            bRequiresBump = true;
                        }
                    }
                    if (bRequiresBump) {
                        this.cfg.setProperty(&quot;zindex&quot;, (parseInt(nTopZIndex, 10) + 2));
                    }
                }
            }
        },

        /**
        * Removes the Overlay element from the DOM and sets all child
        * elements to null.
        * @method destroy
        * @param {boolean} shallowPurge If true, only the parent element's DOM event listeners are purged. If false, or not provided, all children are also purged of DOM event listeners.
        * NOTE: The flag is a &quot;shallowPurge&quot; flag, as opposed to what may be a more intuitive &quot;purgeChildren&quot; flag to maintain backwards compatibility with behavior prior to 2.9.0.
        */
        destroy: function (shallowPurge) {

            if (this.iframe) {
                this.iframe.parentNode.removeChild(this.iframe);
            }

            this.iframe = null;

            Overlay.windowResizeEvent.unsubscribe(
                this.doCenterOnDOMEvent, this);

            Overlay.windowScrollEvent.unsubscribe(
                this.doCenterOnDOMEvent, this);

            Module.textResizeEvent.unsubscribe(this._autoFillOnHeightChange);

            if (this._contextTriggers) {
                // Unsubscribe context triggers - to cover context triggers which listen for global
                // events such as windowResize and windowScroll. Easier just to unsubscribe all
                this._processTriggers(this._contextTriggers, _UNSUBSCRIBE, this._alignOnTrigger);
            }

            Overlay.superclass.destroy.call(this, shallowPurge);
        },

        /**
         * Can be used to force the container to repaint/redraw it's contents.
         * &lt;p&gt;
         * By default applies and then removes a 1px bottom margin through the
         * application/removal of a &quot;yui-force-redraw&quot; class.
         * &lt;/p&gt;
         * &lt;p&gt;
         * It is currently used by Overlay to force a repaint for webkit
         * browsers, when centering.
         * &lt;/p&gt;
         * @method forceContainerRedraw
         */
        forceContainerRedraw : function() {
            var c = this;
            Dom.addClass(c.element, &quot;yui-force-redraw&quot;);
            setTimeout(function() {
                Dom.removeClass(c.element, &quot;yui-force-redraw&quot;);
            }, 0);
        },

        /**
        * Returns a String representation of the object.
        * @method toString
        * @return {String} The string representation of the Overlay.
        */
        toString: function () {
            return &quot;Overlay &quot; + this.id;
        }

    });
}());
(function () {

    /**
    * OverlayManager is used for maintaining the focus status of
    * multiple Overlays.
    * @namespace YAHOO.widget
    * @namespace YAHOO.widget
    * @class OverlayManager
    * @constructor
    * @param {Array} overlays Optional. A collection of Overlays to register
    * with the manager.
    * @param {Object} userConfig  The object literal representing the user
    * configuration of the OverlayManager
    */
    YAHOO.widget.OverlayManager = function (userConfig) {
        this.init(userConfig);
    };

    var Overlay = YAHOO.widget.Overlay,
        Event = YAHOO.util.Event,
        Dom = YAHOO.util.Dom,
        Config = YAHOO.util.Config,
        CustomEvent = YAHOO.util.CustomEvent,
        OverlayManager = YAHOO.widget.OverlayManager;

    /**
    * The CSS class representing a focused Overlay
    * @property OverlayManager.CSS_FOCUSED
    * @static
    * @final
    * @type String
    */
    OverlayManager.CSS_FOCUSED = &quot;focused&quot;;

    OverlayManager.prototype = {

        /**
        * The class's constructor function
        * @property contructor
        * @type Function
        */
        constructor: OverlayManager,

        /**
        * The array of Overlays that are currently registered
        * @property overlays
        * @type YAHOO.widget.Overlay[]
        */
        overlays: null,

        /**
        * Initializes the default configuration of the OverlayManager
        * @method initDefaultConfig
        */
        initDefaultConfig: function () {
            /**
            * The collection of registered Overlays in use by
            * the OverlayManager
            * @config overlays
            * @type YAHOO.widget.Overlay[]
            * @default null
            */
            this.cfg.addProperty(&quot;overlays&quot;, { suppressEvent: true } );

            /**
            * The default DOM event that should be used to focus an Overlay
            * @config focusevent
            * @type String
            * @default &quot;mousedown&quot;
            */
            this.cfg.addProperty(&quot;focusevent&quot;, { value: &quot;mousedown&quot; } );
        },

        /**
        * Initializes the OverlayManager
        * @method init
        * @param {Overlay[]} overlays Optional. A collection of Overlays to
        * register with the manager.
        * @param {Object} userConfig  The object literal representing the user
        * configuration of the OverlayManager
        */
        init: function (userConfig) {

            /**
            * The OverlayManager's Config object used for monitoring
            * configuration properties.
            * @property cfg
            * @type Config
            */
            this.cfg = new Config(this);

            this.initDefaultConfig();

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }
            this.cfg.fireQueue();

            /**
            * The currently activated Overlay
            * @property activeOverlay
            * @private
            * @type YAHOO.widget.Overlay
            */
            var activeOverlay = null;

            /**
            * Returns the currently focused Overlay
            * @method getActive
            * @return {Overlay} The currently focused Overlay
            */
            this.getActive = function () {
                return activeOverlay;
            };

            /**
            * Focuses the specified Overlay
            * @method focus
            * @param {Overlay} overlay The Overlay to focus
            * @param {String} overlay The id of the Overlay to focus
            */
            this.focus = function (overlay) {
                var o = this.find(overlay);
                if (o) {
                    o.focus();
                }
            };

            /**
            * Removes the specified Overlay from the manager
            * @method remove
            * @param {Overlay} overlay The Overlay to remove
            * @param {String} overlay The id of the Overlay to remove
            */
            this.remove = function (overlay) {

                var o = this.find(overlay),
                        originalZ;

                if (o) {
                    if (activeOverlay == o) {
                        activeOverlay = null;
                    }

                    var bDestroyed = (o.element === null &amp;&amp; o.cfg === null) ? true : false;

                    if (!bDestroyed) {
                        // Set it's zindex so that it's sorted to the end.
                        originalZ = Dom.getStyle(o.element, &quot;zIndex&quot;);
                        o.cfg.setProperty(&quot;zIndex&quot;, -1000, true);
                    }

                    this.overlays.sort(this.compareZIndexDesc);
                    this.overlays = this.overlays.slice(0, (this.overlays.length - 1));

                    o.hideEvent.unsubscribe(o.blur);
                    o.destroyEvent.unsubscribe(this._onOverlayDestroy, o);
                    o.focusEvent.unsubscribe(this._onOverlayFocusHandler, o);
                    o.blurEvent.unsubscribe(this._onOverlayBlurHandler, o);

                    if (!bDestroyed) {
                        Event.removeListener(o.element, this.cfg.getProperty(&quot;focusevent&quot;), this._onOverlayElementFocus);
                        o.cfg.setProperty(&quot;zIndex&quot;, originalZ, true);
                        o.cfg.setProperty(&quot;manager&quot;, null);
                    }

                    /* _managed Flag for custom or existing. Don't want to remove existing */
                    if (o.focusEvent._managed) { o.focusEvent = null; }
                    if (o.blurEvent._managed) { o.blurEvent = null; }

                    if (o.focus._managed) { o.focus = null; }
                    if (o.blur._managed) { o.blur = null; }
                }
            };

            /**
            * Removes focus from all registered Overlays in the manager
            * @method blurAll
            */
            this.blurAll = function () {

                var nOverlays = this.overlays.length,
                    i;

                if (nOverlays &gt; 0) {
                    i = nOverlays - 1;
                    do {
                        this.overlays[i].blur();
                    }
                    while(i--);
                }
            };

            /**
             * Updates the state of the OverlayManager and overlay, as a result of the overlay
             * being blurred.
             *
             * @method _manageBlur
             * @param {Overlay} overlay The overlay instance which got blurred.
             * @protected
             */
            this._manageBlur = function (overlay) {
                var changed = false;
                if (activeOverlay == overlay) {
                    Dom.removeClass(activeOverlay.element, OverlayManager.CSS_FOCUSED);
                    activeOverlay = null;
                    changed = true;
                }
                return changed;
            };

            /**
             * Updates the state of the OverlayManager and overlay, as a result of the overlay
             * receiving focus.
             *
             * @method _manageFocus
             * @param {Overlay} overlay The overlay instance which got focus.
             * @protected
             */
            this._manageFocus = function(overlay) {
                var changed = false;
                if (activeOverlay != overlay) {
                    if (activeOverlay) {
                        activeOverlay.blur();
                    }
                    activeOverlay = overlay;
                    this.bringToTop(activeOverlay);
                    Dom.addClass(activeOverlay.element, OverlayManager.CSS_FOCUSED);
                    changed = true;
                }
                return changed;
            };

            var overlays = this.cfg.getProperty(&quot;overlays&quot;);

            if (! this.overlays) {
                this.overlays = [];
            }

            if (overlays) {
                this.register(overlays);
                this.overlays.sort(this.compareZIndexDesc);
            }
        },

        /**
        * @method _onOverlayElementFocus
        * @description Event handler for the DOM event that is used to focus
        * the Overlay instance as specified by the &quot;focusevent&quot;
        * configuration property.
        * @private
        * @param {Event} p_oEvent Object representing the DOM event
        * object passed back by the event utility (Event).
        */
        _onOverlayElementFocus: function (p_oEvent) {

            var oTarget = Event.getTarget(p_oEvent),
                oClose = this.close;

            if (oClose &amp;&amp; (oTarget == oClose || Dom.isAncestor(oClose, oTarget))) {
                this.blur();
            } else {
                this.focus();
            }
        },

        /**
        * @method _onOverlayDestroy
        * @description &quot;destroy&quot; event handler for the Overlay.
        * @private
        * @param {String} p_sType String representing the name of the event
        * that was fired.
        * @param {Array} p_aArgs Array of arguments sent when the event
        * was fired.
        * @param {Overlay} p_oOverlay Object representing the overlay that
        * fired the event.
        */
        _onOverlayDestroy: function (p_sType, p_aArgs, p_oOverlay) {
            this.remove(p_oOverlay);
        },

        /**
        * @method _onOverlayFocusHandler
        *
        * @description focusEvent Handler, used to delegate to _manageFocus with the correct arguments.
        *
        * @private
        * @param {String} p_sType String representing the name of the event
        * that was fired.
        * @param {Array} p_aArgs Array of arguments sent when the event
        * was fired.
        * @param {Overlay} p_oOverlay Object representing the overlay that
        * fired the event.
        */
        _onOverlayFocusHandler: function(p_sType, p_aArgs, p_oOverlay) {
            this._manageFocus(p_oOverlay);
        },

        /**
        * @method _onOverlayBlurHandler
        * @description blurEvent Handler, used to delegate to _manageBlur with the correct arguments.
        *
        * @private
        * @param {String} p_sType String representing the name of the event
        * that was fired.
        * @param {Array} p_aArgs Array of arguments sent when the event
        * was fired.
        * @param {Overlay} p_oOverlay Object representing the overlay that
        * fired the event.
        */
        _onOverlayBlurHandler: function(p_sType, p_aArgs, p_oOverlay) {
            this._manageBlur(p_oOverlay);
        },

        /**
         * Subscribes to the Overlay based instance focusEvent, to allow the OverlayManager to
         * monitor focus state.
         *
         * If the instance already has a focusEvent (e.g. Menu), OverlayManager will subscribe
         * to the existing focusEvent, however if a focusEvent or focus method does not exist
         * on the instance, the _bindFocus method will add them, and the focus method will
         * update the OverlayManager's state directly.
         *
         * @method _bindFocus
         * @param {Overlay} overlay The overlay for which focus needs to be managed
         * @protected
         */
        _bindFocus : function(overlay) {
            var mgr = this;

            if (!overlay.focusEvent) {
                overlay.focusEvent = overlay.createEvent(&quot;focus&quot;);
                overlay.focusEvent.signature = CustomEvent.LIST;
                overlay.focusEvent._managed = true;
            } else {
                overlay.focusEvent.subscribe(mgr._onOverlayFocusHandler, overlay, mgr);
            }

            if (!overlay.focus) {
                Event.on(overlay.element, mgr.cfg.getProperty(&quot;focusevent&quot;), mgr._onOverlayElementFocus, null, overlay);
                overlay.focus = function () {
                    if (mgr._manageFocus(this)) {
                        // For Panel/Dialog
                        if (this.cfg.getProperty(&quot;visible&quot;) &amp;&amp; this.focusFirst) {
                            this.focusFirst();
                        }
                        this.focusEvent.fire();
                    }
                };
                overlay.focus._managed = true;
            }
        },

        /**
         * Subscribes to the Overlay based instance's blurEvent to allow the OverlayManager to
         * monitor blur state.
         *
         * If the instance already has a blurEvent (e.g. Menu), OverlayManager will subscribe
         * to the existing blurEvent, however if a blurEvent or blur method does not exist
         * on the instance, the _bindBlur method will add them, and the blur method
         * update the OverlayManager's state directly.
         *
         * @method _bindBlur
         * @param {Overlay} overlay The overlay for which blur needs to be managed
         * @protected
         */
        _bindBlur : function(overlay) {
            var mgr = this;

            if (!overlay.blurEvent) {
                overlay.blurEvent = overlay.createEvent(&quot;blur&quot;);
                overlay.blurEvent.signature = CustomEvent.LIST;
                overlay.focusEvent._managed = true;
            } else {
                overlay.blurEvent.subscribe(mgr._onOverlayBlurHandler, overlay, mgr);
            }

            if (!overlay.blur) {
                overlay.blur = function () {
                    if (mgr._manageBlur(this)) {
                        this.blurEvent.fire();
                    }
                };
                overlay.blur._managed = true;
            }

            overlay.hideEvent.subscribe(overlay.blur);
        },

        /**
         * Subscribes to the Overlay based instance's destroyEvent, to allow the Overlay
         * to be removed for the OverlayManager when destroyed.
         *
         * @method _bindDestroy
         * @param {Overlay} overlay The overlay instance being managed
         * @protected
         */
        _bindDestroy : function(overlay) {
            var mgr = this;
            overlay.destroyEvent.subscribe(mgr._onOverlayDestroy, overlay, mgr);
        },

        /**
         * Ensures the zIndex configuration property on the managed overlay based instance
         * is set to the computed zIndex value from the DOM (with &quot;auto&quot; translating to 0).
         *
         * @method _syncZIndex
         * @param {Overlay} overlay The overlay instance being managed
         * @protected
         */
        _syncZIndex : function(overlay) {
            var zIndex = Dom.getStyle(overlay.element, &quot;zIndex&quot;);
            if (!isNaN(zIndex)) {
                overlay.cfg.setProperty(&quot;zIndex&quot;, parseInt(zIndex, 10));
            } else {
                overlay.cfg.setProperty(&quot;zIndex&quot;, 0);
            }
        },

        /**
        * Registers an Overlay or an array of Overlays with the manager. Upon
        * registration, the Overlay receives functions for focus and blur,
        * along with CustomEvents for each.
        *
        * @method register
        * @param {Overlay} overlay  An Overlay to register with the manager.
        * @param {Overlay[]} overlay  An array of Overlays to register with
        * the manager.
        * @return {boolean} true if any Overlays are registered.
        */
        register: function (overlay) {

            var registered = false,
                i,
                n;

            if (overlay instanceof Overlay) {

                overlay.cfg.addProperty(&quot;manager&quot;, { value: this } );

                this._bindFocus(overlay);
                this._bindBlur(overlay);
                this._bindDestroy(overlay);
                this._syncZIndex(overlay);

                this.overlays.push(overlay);
                this.bringToTop(overlay);

                registered = true;

            } else if (overlay instanceof Array) {

                for (i = 0, n = overlay.length; i &lt; n; i++) {
                    registered = this.register(overlay[i]) || registered;
                }

            }

            return registered;
        },

        /**
        * Places the specified Overlay instance on top of all other
        * Overlay instances.
        * @method bringToTop
        * @param {YAHOO.widget.Overlay} p_oOverlay Object representing an
        * Overlay instance.
        * @param {String} p_oOverlay String representing the id of an
        * Overlay instance.
        */
        bringToTop: function (p_oOverlay) {

            var oOverlay = this.find(p_oOverlay),
                nTopZIndex,
                oTopOverlay,
                aOverlays;

            if (oOverlay) {

                aOverlays = this.overlays;
                aOverlays.sort(this.compareZIndexDesc);

                oTopOverlay = aOverlays[0];

                if (oTopOverlay) {
                    nTopZIndex = Dom.getStyle(oTopOverlay.element, &quot;zIndex&quot;);

                    if (!isNaN(nTopZIndex)) {

                        var bRequiresBump = false;

                        if (oTopOverlay !== oOverlay) {
                            bRequiresBump = true;
                        } else if (aOverlays.length &gt; 1) {
                            var nNextZIndex = Dom.getStyle(aOverlays[1].element, &quot;zIndex&quot;);
                            // Don't rely on DOM order to stack if 2 overlays are at the same zindex.
                            if (!isNaN(nNextZIndex) &amp;&amp; (nTopZIndex == nNextZIndex)) {
                                bRequiresBump = true;
                            }
                        }

                        if (bRequiresBump) {
                            oOverlay.cfg.setProperty(&quot;zindex&quot;, (parseInt(nTopZIndex, 10) + 2));
                        }
                    }
                    aOverlays.sort(this.compareZIndexDesc);
                }
            }
        },

        /**
        * Attempts to locate an Overlay by instance or ID.
        * @method find
        * @param {Overlay} overlay  An Overlay to locate within the manager
        * @param {String} overlay  An Overlay id to locate within the manager
        * @return {Overlay} The requested Overlay, if found, or null if it
        * cannot be located.
        */
        find: function (overlay) {

            var isInstance = overlay instanceof Overlay,
                overlays = this.overlays,
                n = overlays.length,
                found = null,
                o,
                i;

            if (isInstance || typeof overlay == &quot;string&quot;) {
                for (i = n-1; i &gt;= 0; i--) {
                    o = overlays[i];
                    if ((isInstance &amp;&amp; (o === overlay)) || (o.id == overlay)) {
                        found = o;
                        break;
                    }
                }
            }

            return found;
        },

        /**
        * Used for sorting the manager's Overlays by z-index.
        * @method compareZIndexDesc
        * @private
        * @return {Number} 0, 1, or -1, depending on where the Overlay should
        * fall in the stacking order.
        */
        compareZIndexDesc: function (o1, o2) {

            var zIndex1 = (o1.cfg) ? o1.cfg.getProperty(&quot;zIndex&quot;) : null, // Sort invalid (destroyed)
                zIndex2 = (o2.cfg) ? o2.cfg.getProperty(&quot;zIndex&quot;) : null; // objects at bottom.

            if (zIndex1 === null &amp;&amp; zIndex2 === null) {
                return 0;
            } else if (zIndex1 === null){
                return 1;
            } else if (zIndex2 === null) {
                return -1;
            } else if (zIndex1 &gt; zIndex2) {
                return -1;
            } else if (zIndex1 &lt; zIndex2) {
                return 1;
            } else {
                return 0;
            }
        },

        /**
        * Shows all Overlays in the manager.
        * @method showAll
        */
        showAll: function () {
            var overlays = this.overlays,
                n = overlays.length,
                i;

            for (i = n - 1; i &gt;= 0; i--) {
                overlays[i].show();
            }
        },

        /**
        * Hides all Overlays in the manager.
        * @method hideAll
        */
        hideAll: function () {
            var overlays = this.overlays,
                n = overlays.length,
                i;

            for (i = n - 1; i &gt;= 0; i--) {
                overlays[i].hide();
            }
        },

        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} The string representation of the OverlayManager
        */
        toString: function () {
            return &quot;OverlayManager&quot;;
        }
    };
}());
(function () {

    /**
    * Tooltip is an implementation of Overlay that behaves like an OS tooltip,
    * displaying when the user mouses over a particular element, and
    * disappearing on mouse out.
    * @namespace YAHOO.widget
    * @class Tooltip
    * @extends YAHOO.widget.Overlay
    * @constructor
    * @param {String} el The element ID representing the Tooltip &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the Tooltip
    * @param {Object} userConfig The configuration object literal containing
    * the configuration that should be set for this Overlay. See configuration
    * documentation for more details.
    */
    YAHOO.widget.Tooltip = function (el, userConfig) {
        YAHOO.widget.Tooltip.superclass.constructor.call(this, el, userConfig);
    };

    var Lang = YAHOO.lang,
        Event = YAHOO.util.Event,
        CustomEvent = YAHOO.util.CustomEvent,
        Dom = YAHOO.util.Dom,
        Tooltip = YAHOO.widget.Tooltip,
        UA = YAHOO.env.ua,
        bIEQuirks = (UA.ie &amp;&amp; (UA.ie &lt;= 6 || document.compatMode == &quot;BackCompat&quot;)),

        m_oShadowTemplate,

        /**
        * Constant representing the Tooltip's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;PREVENT_OVERLAP&quot;: {
                key: &quot;preventoverlap&quot;,
                value: true,
                validator: Lang.isBoolean,
                supercedes: [&quot;x&quot;, &quot;y&quot;, &quot;xy&quot;]
            },

            &quot;SHOW_DELAY&quot;: {
                key: &quot;showdelay&quot;,
                value: 200,
                validator: Lang.isNumber
            },

            &quot;AUTO_DISMISS_DELAY&quot;: {
                key: &quot;autodismissdelay&quot;,
                value: 5000,
                validator: Lang.isNumber
            },

            &quot;HIDE_DELAY&quot;: {
                key: &quot;hidedelay&quot;,
                value: 250,
                validator: Lang.isNumber
            },

            &quot;TEXT&quot;: {
                key: &quot;text&quot;,
                suppressEvent: true
            },

            &quot;CONTAINER&quot;: {
                key: &quot;container&quot;
            },

            &quot;DISABLED&quot;: {
                key: &quot;disabled&quot;,
                value: false,
                suppressEvent: true
            },

            &quot;XY_OFFSET&quot;: {
                key: &quot;xyoffset&quot;,
                value: [0, 25],
                suppressEvent: true
            }
        },

        /**
        * Constant representing the name of the Tooltip's events
        * @property EVENT_TYPES
        * @private
        * @final
        * @type Object
        */
        EVENT_TYPES = {
            &quot;CONTEXT_MOUSE_OVER&quot;: &quot;contextMouseOver&quot;,
            &quot;CONTEXT_MOUSE_OUT&quot;: &quot;contextMouseOut&quot;,
            &quot;CONTEXT_TRIGGER&quot;: &quot;contextTrigger&quot;
        };

    /**
    * Constant representing the Tooltip CSS class
    * @property YAHOO.widget.Tooltip.CSS_TOOLTIP
    * @static
    * @final
    * @type String
    */
    Tooltip.CSS_TOOLTIP = &quot;yui-tt&quot;;

    function restoreOriginalWidth(sOriginalWidth, sForcedWidth) {

        var oConfig = this.cfg,
            sCurrentWidth = oConfig.getProperty(&quot;width&quot;);

        if (sCurrentWidth == sForcedWidth) {
            oConfig.setProperty(&quot;width&quot;, sOriginalWidth);
        }
    }

    /*
        changeContent event handler that sets a Tooltip instance's &quot;width&quot;
        configuration property to the value of its root HTML
        elements's offsetWidth if a specific width has not been set.
    */

    function setWidthToOffsetWidth(p_sType, p_aArgs) {

        if (&quot;_originalWidth&quot; in this) {
            restoreOriginalWidth.call(this, this._originalWidth, this._forcedWidth);
        }

        var oBody = document.body,
            oConfig = this.cfg,
            sOriginalWidth = oConfig.getProperty(&quot;width&quot;),
            sNewWidth,
            oClone;

        if ((!sOriginalWidth || sOriginalWidth == &quot;auto&quot;) &amp;&amp;
            (oConfig.getProperty(&quot;container&quot;) != oBody ||
            oConfig.getProperty(&quot;x&quot;) &gt;= Dom.getViewportWidth() ||
            oConfig.getProperty(&quot;y&quot;) &gt;= Dom.getViewportHeight())) {

            oClone = this.element.cloneNode(true);
            oClone.style.visibility = &quot;hidden&quot;;
            oClone.style.top = &quot;0px&quot;;
            oClone.style.left = &quot;0px&quot;;

            oBody.appendChild(oClone);

            sNewWidth = (oClone.offsetWidth + &quot;px&quot;);

            oBody.removeChild(oClone);
            oClone = null;

            oConfig.setProperty(&quot;width&quot;, sNewWidth);
            oConfig.refireEvent(&quot;xy&quot;);

            this._originalWidth = sOriginalWidth || &quot;&quot;;
            this._forcedWidth = sNewWidth;
        }
    }

    // &quot;onDOMReady&quot; that renders the ToolTip

    function onDOMReady(p_sType, p_aArgs, p_oObject) {
        this.render(p_oObject);
    }

    //  &quot;init&quot; event handler that automatically renders the Tooltip

    function onInit() {
        Event.onDOMReady(onDOMReady, this.cfg.getProperty(&quot;container&quot;), this);
    }

    YAHOO.extend(Tooltip, YAHOO.widget.Overlay, {

        /**
        * The Tooltip initialization method. This method is automatically
        * called by the constructor. A Tooltip is automatically rendered by
        * the init method, and it also is set to be invisible by default,
        * and constrained to viewport by default as well.
        * @method init
        * @param {String} el The element ID representing the Tooltip &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the Tooltip
        * @param {Object} userConfig The configuration object literal
        * containing the configuration that should be set for this Tooltip.
        * See configuration documentation for more details.
        */
        init: function (el, userConfig) {

            this.logger = new YAHOO.widget.LogWriter(this.toString());

            Tooltip.superclass.init.call(this, el);

            this.beforeInitEvent.fire(Tooltip);

            Dom.addClass(this.element, Tooltip.CSS_TOOLTIP);

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            this.cfg.queueProperty(&quot;visible&quot;, false);
            this.cfg.queueProperty(&quot;constraintoviewport&quot;, true);

            this.setBody(&quot;&quot;);

            this.subscribe(&quot;changeContent&quot;, setWidthToOffsetWidth);
            this.subscribe(&quot;init&quot;, onInit);
            this.subscribe(&quot;render&quot;, this.onRender);

            this.initEvent.fire(Tooltip);
        },

        /**
        * Initializes the custom events for Tooltip
        * @method initEvents
        */
        initEvents: function () {

            Tooltip.superclass.initEvents.call(this);
            var SIGNATURE = CustomEvent.LIST;

            /**
            * CustomEvent fired when user mouses over a context element. Returning false from
            * a subscriber to this event will prevent the tooltip from being displayed for
            * the current context element.
            *
            * @event contextMouseOverEvent
            * @param {HTMLElement} context The context element which the user just moused over
            * @param {DOMEvent} e The DOM event object, associated with the mouse over
            */
            this.contextMouseOverEvent = this.createEvent(EVENT_TYPES.CONTEXT_MOUSE_OVER);
            this.contextMouseOverEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired when the user mouses out of a context element.
            *
            * @event contextMouseOutEvent
            * @param {HTMLElement} context The context element which the user just moused out of
            * @param {DOMEvent} e The DOM event object, associated with the mouse out
            */
            this.contextMouseOutEvent = this.createEvent(EVENT_TYPES.CONTEXT_MOUSE_OUT);
            this.contextMouseOutEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired just before the tooltip is displayed for the current context.
            * &lt;p&gt;
            *  You can subscribe to this event if you need to set up the text for the
            *  tooltip based on the context element for which it is about to be displayed.
            * &lt;/p&gt;
            * &lt;p&gt;This event differs from the beforeShow event in following respects:&lt;/p&gt;
            * &lt;ol&gt;
            *   &lt;li&gt;
            *    When moving from one context element to another, if the tooltip is not
            *    hidden (the &lt;code&gt;hidedelay&lt;/code&gt; is not reached), the beforeShow and Show events will not
            *    be fired when the tooltip is displayed for the new context since it is already visible.
            *    However the contextTrigger event is always fired before displaying the tooltip for
            *    a new context.
            *   &lt;/li&gt;
            *   &lt;li&gt;
            *    The trigger event provides access to the context element, allowing you to
            *    set the text of the tooltip based on context element for which the tooltip is
            *    triggered.
            *   &lt;/li&gt;
            * &lt;/ol&gt;
            * &lt;p&gt;
            *  It is not possible to prevent the tooltip from being displayed
            *  using this event. You can use the contextMouseOverEvent if you need to prevent
            *  the tooltip from being displayed.
            * &lt;/p&gt;
            * @event contextTriggerEvent
            * @param {HTMLElement} context The context element for which the tooltip is triggered
            */
            this.contextTriggerEvent = this.createEvent(EVENT_TYPES.CONTEXT_TRIGGER);
            this.contextTriggerEvent.signature = SIGNATURE;
        },

        /**
        * Initializes the class's configurable properties which can be
        * changed using the Overlay's Config object (cfg).
        * @method initDefaultConfig
        */
        initDefaultConfig: function () {

            Tooltip.superclass.initDefaultConfig.call(this);

            /**
            * Specifies whether the Tooltip should be kept from overlapping
            * its context element.
            * @config preventoverlap
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.PREVENT_OVERLAP.key, {
                value: DEFAULT_CONFIG.PREVENT_OVERLAP.value,
                validator: DEFAULT_CONFIG.PREVENT_OVERLAP.validator,
                supercedes: DEFAULT_CONFIG.PREVENT_OVERLAP.supercedes
            });

            /**
            * The number of milliseconds to wait before showing a Tooltip
            * on mouseover.
            * @config showdelay
            * @type Number
            * @default 200
            */
            this.cfg.addProperty(DEFAULT_CONFIG.SHOW_DELAY.key, {
                handler: this.configShowDelay,
                value: 200,
                validator: DEFAULT_CONFIG.SHOW_DELAY.validator
            });

            /**
            * The number of milliseconds to wait before automatically
            * dismissing a Tooltip after the mouse has been resting on the
            * context element.
            * @config autodismissdelay
            * @type Number
            * @default 5000
            */
            this.cfg.addProperty(DEFAULT_CONFIG.AUTO_DISMISS_DELAY.key, {
                handler: this.configAutoDismissDelay,
                value: DEFAULT_CONFIG.AUTO_DISMISS_DELAY.value,
                validator: DEFAULT_CONFIG.AUTO_DISMISS_DELAY.validator
            });

            /**
            * The number of milliseconds to wait before hiding a Tooltip
            * after mouseout.
            * @config hidedelay
            * @type Number
            * @default 250
            */
            this.cfg.addProperty(DEFAULT_CONFIG.HIDE_DELAY.key, {
                handler: this.configHideDelay,
                value: DEFAULT_CONFIG.HIDE_DELAY.value,
                validator: DEFAULT_CONFIG.HIDE_DELAY.validator
            });

            /**
            * Specifies the Tooltip's text. The text is inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
            * @config text
            * @type HTML
            * @default null
            */
            this.cfg.addProperty(DEFAULT_CONFIG.TEXT.key, {
                handler: this.configText,
                suppressEvent: DEFAULT_CONFIG.TEXT.suppressEvent
            });

            /**
            * Specifies the container element that the Tooltip's markup
            * should be rendered into.
            * @config container
            * @type HTMLElement/String
            * @default document.body
            */
            this.cfg.addProperty(DEFAULT_CONFIG.CONTAINER.key, {
                handler: this.configContainer,
                value: document.body
            });

            /**
            * Specifies whether or not the tooltip is disabled. Disabled tooltips
            * will not be displayed. If the tooltip is driven by the title attribute
            * of the context element, the title attribute will still be removed for
            * disabled tooltips, to prevent default tooltip behavior.
            *
            * @config disabled
            * @type Boolean
            * @default false
            */
            this.cfg.addProperty(DEFAULT_CONFIG.DISABLED.key, {
                handler: this.configContainer,
                value: DEFAULT_CONFIG.DISABLED.value,
                supressEvent: DEFAULT_CONFIG.DISABLED.suppressEvent
            });

            /**
            * Specifies the XY offset from the mouse position, where the tooltip should be displayed, specified
            * as a 2 element array (e.g. [10, 20]);
            *
            * @config xyoffset
            * @type Array
            * @default [0, 25]
            */
            this.cfg.addProperty(DEFAULT_CONFIG.XY_OFFSET.key, {
                value: DEFAULT_CONFIG.XY_OFFSET.value.concat(),
                supressEvent: DEFAULT_CONFIG.XY_OFFSET.suppressEvent
            });

            /**
            * Specifies the element or elements that the Tooltip should be
            * anchored to on mouseover.
            * @config context
            * @type HTMLElement[]/String[]
            * @default null
            */

            /**
            * String representing the width of the Tooltip.  &lt;em&gt;Please note:
            * &lt;/em&gt; As of version 2.3 if either no value or a value of &quot;auto&quot;
            * is specified, and the Toolip's &quot;container&quot; configuration property
            * is set to something other than &lt;code&gt;document.body&lt;/code&gt; or
            * its &quot;context&quot; element resides outside the immediately visible
            * portion of the document, the width of the Tooltip will be
            * calculated based on the offsetWidth of its root HTML and set just
            * before it is made visible.  The original value will be
            * restored when the Tooltip is hidden. This ensures the Tooltip is
            * rendered at a usable width.  For more information see
            * YUILibrary bug #1685496 and YUILibrary
            * bug #1735423.
            * @config width
            * @type String
            * @default null
            */

        },

        // BEGIN BUILT-IN PROPERTY EVENT HANDLERS //

        /**
        * The default event handler fired when the &quot;text&quot; property is changed.
        * @method configText
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configText: function (type, args, obj) {
            var text = args[0];
            if (text) {
                this.setBody(text);
            }
        },

        /**
        * The default event handler fired when the &quot;container&quot; property
        * is changed.
        * @method configContainer
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For
        * configuration handlers, args[0] will equal the newly applied value
        * for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configContainer: function (type, args, obj) {
            var container = args[0];

            if (typeof container == 'string') {
                this.cfg.setProperty(&quot;container&quot;, document.getElementById(container), true);
            }
        },

        /**
        * @method _removeEventListeners
        * @description Removes all of the DOM event handlers from the HTML
        *  element(s) that trigger the display of the tooltip.
        * @protected
        */
        _removeEventListeners: function () {

            var aElements = this._context,
                nElements,
                oElement,
                i;

            if (aElements) {
                nElements = aElements.length;
                if (nElements &gt; 0) {
                    i = nElements - 1;
                    do {
                        oElement = aElements[i];
                        Event.removeListener(oElement, &quot;mouseover&quot;, this.onContextMouseOver);
                        Event.removeListener(oElement, &quot;mousemove&quot;, this.onContextMouseMove);
                        Event.removeListener(oElement, &quot;mouseout&quot;, this.onContextMouseOut);
                    }
                    while (i--);
                }
            }
        },

        /**
        * The default event handler fired when the &quot;context&quot; property
        * is changed.
        * @method configContext
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configContext: function (type, args, obj) {

            var context = args[0],
                aElements,
                nElements,
                oElement,
                i;

            if (context) {

                // Normalize parameter into an array
                if (! (context instanceof Array)) {
                    if (typeof context == &quot;string&quot;) {
                        this.cfg.setProperty(&quot;context&quot;, [document.getElementById(context)], true);
                    } else { // Assuming this is an element
                        this.cfg.setProperty(&quot;context&quot;, [context], true);
                    }
                    context = this.cfg.getProperty(&quot;context&quot;);
                }

                // Remove any existing mouseover/mouseout listeners
                this._removeEventListeners();

                // Add mouseover/mouseout listeners to context elements
                this._context = context;

                aElements = this._context;

                if (aElements) {
                    nElements = aElements.length;
                    if (nElements &gt; 0) {
                        i = nElements - 1;
                        do {
                            oElement = aElements[i];
                            Event.on(oElement, &quot;mouseover&quot;, this.onContextMouseOver, this);
                            Event.on(oElement, &quot;mousemove&quot;, this.onContextMouseMove, this);
                            Event.on(oElement, &quot;mouseout&quot;, this.onContextMouseOut, this);
                        }
                        while (i--);
                    }
                }
            }
        },

        // END BUILT-IN PROPERTY EVENT HANDLERS //

        // BEGIN BUILT-IN DOM EVENT HANDLERS //

        /**
        * The default event handler fired when the user moves the mouse while
        * over the context element.
        * @method onContextMouseMove
        * @param {DOMEvent} e The current DOM event
        * @param {Object} obj The object argument
        */
        onContextMouseMove: function (e, obj) {
            obj.pageX = Event.getPageX(e);
            obj.pageY = Event.getPageY(e);
        },

        /**
        * The default event handler fired when the user mouses over the
        * context element.
        * @method onContextMouseOver
        * @param {DOMEvent} e The current DOM event
        * @param {Object} obj The object argument
        */
        onContextMouseOver: function (e, obj) {
            var context = this;

            if (context.title) {
                obj._tempTitle = context.title;
                context.title = &quot;&quot;;
            }

            // Fire first, to honor disabled set in the listner
            if (obj.fireEvent(&quot;contextMouseOver&quot;, context, e) !== false &amp;&amp; !obj.cfg.getProperty(&quot;disabled&quot;)) {

                // Stop the tooltip from being hidden (set on last mouseout)
                if (obj.hideProcId) {
                    clearTimeout(obj.hideProcId);
                    obj.logger.log(&quot;Clearing hide timer: &quot; + obj.hideProcId, &quot;time&quot;);
                    obj.hideProcId = null;
                }

                Event.on(context, &quot;mousemove&quot;, obj.onContextMouseMove, obj);

                /**
                * The unique process ID associated with the thread responsible
                * for showing the Tooltip.
                * @type int
                */
                obj.showProcId = obj.doShow(e, context);
                obj.logger.log(&quot;Setting show tooltip timeout: &quot; + obj.showProcId, &quot;time&quot;);
            }
        },

        /**
        * The default event handler fired when the user mouses out of
        * the context element.
        * @method onContextMouseOut
        * @param {DOMEvent} e The current DOM event
        * @param {Object} obj The object argument
        */
        onContextMouseOut: function (e, obj) {
            var el = this;

            if (obj._tempTitle) {
                el.title = obj._tempTitle;
                obj._tempTitle = null;
            }

            if (obj.showProcId) {
                clearTimeout(obj.showProcId);
                obj.logger.log(&quot;Clearing show timer: &quot; + obj.showProcId, &quot;time&quot;);
                obj.showProcId = null;
            }

            if (obj.hideProcId) {
                clearTimeout(obj.hideProcId);
                obj.logger.log(&quot;Clearing hide timer: &quot; + obj.hideProcId, &quot;time&quot;);
                obj.hideProcId = null;
            }

            obj.fireEvent(&quot;contextMouseOut&quot;, el, e);

            obj.hideProcId = setTimeout(function () {
                obj.hide();
            }, obj.cfg.getProperty(&quot;hidedelay&quot;));
        },

        // END BUILT-IN DOM EVENT HANDLERS //

        /**
        * Processes the showing of the Tooltip by setting the timeout delay
        * and offset of the Tooltip.
        * @method doShow
        * @param {DOMEvent} e The current DOM event
        * @param {HTMLElement} context The current context element
        * @return {Number} The process ID of the timeout function associated
        * with doShow
        */
        doShow: function (e, context) {

            var offset = this.cfg.getProperty(&quot;xyoffset&quot;),
                xOffset = offset[0],
                yOffset = offset[1],
                me = this;

            if (UA.opera &amp;&amp; context.tagName &amp;&amp;
                context.tagName.toUpperCase() == &quot;A&quot;) {
                yOffset += 12;
            }

            return setTimeout(function () {

                var txt = me.cfg.getProperty(&quot;text&quot;);

                // title does not over-ride text
                if (me._tempTitle &amp;&amp; (txt === &quot;&quot; || YAHOO.lang.isUndefined(txt) || YAHOO.lang.isNull(txt))) {
                    me.setBody(me._tempTitle);
                } else {
                    me.cfg.refireEvent(&quot;text&quot;);
                }

                me.logger.log(&quot;Show tooltip&quot;, &quot;time&quot;);
                me.moveTo(me.pageX + xOffset, me.pageY + yOffset);

                if (me.cfg.getProperty(&quot;preventoverlap&quot;)) {
                    me.preventOverlap(me.pageX, me.pageY);
                }

                Event.removeListener(context, &quot;mousemove&quot;, me.onContextMouseMove);

                me.contextTriggerEvent.fire(context);

                me.show();

                me.hideProcId = me.doHide();
                me.logger.log(&quot;Hide tooltip time active: &quot; + me.hideProcId, &quot;time&quot;);

            }, this.cfg.getProperty(&quot;showdelay&quot;));
        },

        /**
        * Sets the timeout for the auto-dismiss delay, which by default is 5
        * seconds, meaning that a tooltip will automatically dismiss itself
        * after 5 seconds of being displayed.
        * @method doHide
        */
        doHide: function () {

            var me = this;

            me.logger.log(&quot;Setting hide tooltip timeout&quot;, &quot;time&quot;);

            return setTimeout(function () {

                me.logger.log(&quot;Hide tooltip&quot;, &quot;time&quot;);
                me.hide();

            }, this.cfg.getProperty(&quot;autodismissdelay&quot;));

        },

        /**
        * Fired when the Tooltip is moved, this event handler is used to
        * prevent the Tooltip from overlapping with its context element.
        * @method preventOverlay
        * @param {Number} pageX The x coordinate position of the mouse pointer
        * @param {Number} pageY The y coordinate position of the mouse pointer
        */
        preventOverlap: function (pageX, pageY) {

            var height = this.element.offsetHeight,
                mousePoint = new YAHOO.util.Point(pageX, pageY),
                elementRegion = Dom.getRegion(this.element);

            elementRegion.top -= 5;
            elementRegion.left -= 5;
            elementRegion.right += 5;
            elementRegion.bottom += 5;

            this.logger.log(&quot;context &quot; + elementRegion, &quot;ttip&quot;);
            this.logger.log(&quot;mouse &quot; + mousePoint, &quot;ttip&quot;);

            if (elementRegion.contains(mousePoint)) {
                this.logger.log(&quot;OVERLAP&quot;, &quot;warn&quot;);
                this.cfg.setProperty(&quot;y&quot;, (pageY - height - 5));
            }
        },


        /**
        * @method onRender
        * @description &quot;render&quot; event handler for the Tooltip.
        * @param {String} p_sType String representing the name of the event
        * that was fired.
        * @param {Array} p_aArgs Array of arguments sent when the event
        * was fired.
        */
        onRender: function (p_sType, p_aArgs) {

            function sizeShadow() {

                var oElement = this.element,
                    oShadow = this.underlay;

                if (oShadow) {
                    oShadow.style.width = (oElement.offsetWidth + 6) + &quot;px&quot;;
                    oShadow.style.height = (oElement.offsetHeight + 1) + &quot;px&quot;;
                }

            }

            function addShadowVisibleClass() {
                Dom.addClass(this.underlay, &quot;yui-tt-shadow-visible&quot;);

                if (UA.ie) {
                    this.forceUnderlayRedraw();
                }
            }

            function removeShadowVisibleClass() {
                Dom.removeClass(this.underlay, &quot;yui-tt-shadow-visible&quot;);
            }

            function createShadow() {

                var oShadow = this.underlay,
                    oElement,
                    Module,
                    nIE,
                    me;

                if (!oShadow) {

                    oElement = this.element;
                    Module = YAHOO.widget.Module;
                    nIE = UA.ie;
                    me = this;

                    if (!m_oShadowTemplate) {
                        m_oShadowTemplate = document.createElement(&quot;div&quot;);
                        m_oShadowTemplate.className = &quot;yui-tt-shadow&quot;;
                    }

                    oShadow = m_oShadowTemplate.cloneNode(false);

                    oElement.appendChild(oShadow);

                    this.underlay = oShadow;

                    // Backward compatibility, even though it's probably
                    // intended to be &quot;private&quot;, it isn't marked as such in the api docs
                    this._shadow = this.underlay;

                    addShadowVisibleClass.call(this);

                    this.subscribe(&quot;beforeShow&quot;, addShadowVisibleClass);
                    this.subscribe(&quot;hide&quot;, removeShadowVisibleClass);

                    if (bIEQuirks) {
                        window.setTimeout(function () {
                            sizeShadow.call(me);
                        }, 0);

                        this.cfg.subscribeToConfigEvent(&quot;width&quot;, sizeShadow);
                        this.cfg.subscribeToConfigEvent(&quot;height&quot;, sizeShadow);
                        this.subscribe(&quot;changeContent&quot;, sizeShadow);

                        Module.textResizeEvent.subscribe(sizeShadow, this, true);
                        this.subscribe(&quot;destroy&quot;, function () {
                            Module.textResizeEvent.unsubscribe(sizeShadow, this);
                        });
                    }
                }
            }

            function onBeforeShow() {
                createShadow.call(this);
                this.unsubscribe(&quot;beforeShow&quot;, onBeforeShow);
            }

            if (this.cfg.getProperty(&quot;visible&quot;)) {
                createShadow.call(this);
            } else {
                this.subscribe(&quot;beforeShow&quot;, onBeforeShow);
            }

        },

        /**
         * Forces the underlay element to be repainted, through the application/removal
         * of a yui-force-redraw class to the underlay element.
         *
         * @method forceUnderlayRedraw
         */
        forceUnderlayRedraw : function() {
            var tt = this;
            Dom.addClass(tt.underlay, &quot;yui-force-redraw&quot;);
            setTimeout(function() {Dom.removeClass(tt.underlay, &quot;yui-force-redraw&quot;);}, 0);
        },

        /**
        * Removes the Tooltip element from the DOM and sets all child
        * elements to null.
        * @method destroy
        */
        destroy: function () {

            // Remove any existing mouseover/mouseout listeners
            this._removeEventListeners();

            Tooltip.superclass.destroy.call(this);

        },

        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} The string representation of the Tooltip
        */
        toString: function () {
            return &quot;Tooltip &quot; + this.id;
        }

    });

}());
(function () {

    /**
    * Panel is an implementation of Overlay that behaves like an OS window,
    * with a draggable header and an optional close icon at the top right.
    * @namespace YAHOO.widget
    * @class Panel
    * @extends YAHOO.widget.Overlay
    * @constructor
    * @param {String} el The element ID representing the Panel &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the Panel
    * @param {Object} userConfig The configuration object literal containing
    * the configuration that should be set for this Panel. See configuration
    * documentation for more details.
    */
    YAHOO.widget.Panel = function (el, userConfig) {
        YAHOO.widget.Panel.superclass.constructor.call(this, el, userConfig);
    };

    var _currentModal = null;

    var Lang = YAHOO.lang,
        Util = YAHOO.util,
        Dom = Util.Dom,
        Event = Util.Event,
        CustomEvent = Util.CustomEvent,
        KeyListener = YAHOO.util.KeyListener,
        Config = Util.Config,
        Overlay = YAHOO.widget.Overlay,
        Panel = YAHOO.widget.Panel,
        UA = YAHOO.env.ua,

        bIEQuirks = (UA.ie &amp;&amp; (UA.ie &lt;= 6 || document.compatMode == &quot;BackCompat&quot;)),

        m_oMaskTemplate,
        m_oUnderlayTemplate,
        m_oCloseIconTemplate,

        /**
        * Constant representing the name of the Panel's events
        * @property EVENT_TYPES
        * @private
        * @final
        * @type Object
        */
        EVENT_TYPES = {
            &quot;BEFORE_SHOW_MASK&quot; : &quot;beforeShowMask&quot;,
            &quot;BEFORE_HIDE_MASK&quot; : &quot;beforeHideMask&quot;,
            &quot;SHOW_MASK&quot;: &quot;showMask&quot;,
            &quot;HIDE_MASK&quot;: &quot;hideMask&quot;,
            &quot;DRAG&quot;: &quot;drag&quot;
        },

        /**
        * Constant representing the Panel's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;CLOSE&quot;: {
                key: &quot;close&quot;,
                value: true,
                validator: Lang.isBoolean,
                supercedes: [&quot;visible&quot;]
            },

            &quot;DRAGGABLE&quot;: {
                key: &quot;draggable&quot;,
                value: (Util.DD ? true : false),
                validator: Lang.isBoolean,
                supercedes: [&quot;visible&quot;]
            },

            &quot;DRAG_ONLY&quot; : {
                key: &quot;dragonly&quot;,
                value: false,
                validator: Lang.isBoolean,
                supercedes: [&quot;draggable&quot;]
            },

            &quot;UNDERLAY&quot;: {
                key: &quot;underlay&quot;,
                value: &quot;shadow&quot;,
                supercedes: [&quot;visible&quot;]
            },

            &quot;MODAL&quot;: {
                key: &quot;modal&quot;,
                value: false,
                validator: Lang.isBoolean,
                supercedes: [&quot;visible&quot;, &quot;zindex&quot;]
            },

            &quot;KEY_LISTENERS&quot;: {
                key: &quot;keylisteners&quot;,
                suppressEvent: true,
                supercedes: [&quot;visible&quot;]
            },

            &quot;STRINGS&quot; : {
                key: &quot;strings&quot;,
                supercedes: [&quot;close&quot;],
                validator: Lang.isObject,
                value: {
                    close: &quot;Close&quot;
                }
            }
        };

    /**
    * Constant representing the default CSS class used for a Panel
    * @property YAHOO.widget.Panel.CSS_PANEL
    * @static
    * @final
    * @type String
    */
    Panel.CSS_PANEL = &quot;yui-panel&quot;;

    /**
    * Constant representing the default CSS class used for a Panel's
    * wrapping container
    * @property YAHOO.widget.Panel.CSS_PANEL_CONTAINER
    * @static
    * @final
    * @type String
    */
    Panel.CSS_PANEL_CONTAINER = &quot;yui-panel-container&quot;;

    /**
     * Constant representing the default set of focusable elements
     * on the pagewhich Modal Panels will prevent access to, when
     * the modal mask is displayed
     *
     * @property YAHOO.widget.Panel.FOCUSABLE
     * @static
     * @type Array
     */
    Panel.FOCUSABLE = [
        &quot;a&quot;,
        &quot;button&quot;,
        &quot;select&quot;,
        &quot;textarea&quot;,
        &quot;input&quot;,
        &quot;iframe&quot;
    ];

    // Private CustomEvent listeners

    /*
        &quot;beforeRender&quot; event handler that creates an empty header for a Panel
        instance if its &quot;draggable&quot; configuration property is set to &quot;true&quot;
        and no header has been created.
    */

    function createHeader(p_sType, p_aArgs) {
        if (!this.header &amp;&amp; this.cfg.getProperty(&quot;draggable&quot;)) {
            this.setHeader(&quot;&amp;#160;&quot;);
        }
    }

    /*
        &quot;hide&quot; event handler that sets a Panel instance's &quot;width&quot;
        configuration property back to its original value before
        &quot;setWidthToOffsetWidth&quot; was called.
    */

    function restoreOriginalWidth(p_sType, p_aArgs, p_oObject) {

        var sOriginalWidth = p_oObject[0],
            sNewWidth = p_oObject[1],
            oConfig = this.cfg,
            sCurrentWidth = oConfig.getProperty(&quot;width&quot;);

        if (sCurrentWidth == sNewWidth) {
            oConfig.setProperty(&quot;width&quot;, sOriginalWidth);
        }

        this.unsubscribe(&quot;hide&quot;, restoreOriginalWidth, p_oObject);
    }

    /*
        &quot;beforeShow&quot; event handler that sets a Panel instance's &quot;width&quot;
        configuration property to the value of its root HTML
        elements's offsetWidth
    */

    function setWidthToOffsetWidth(p_sType, p_aArgs) {

        var oConfig,
            sOriginalWidth,
            sNewWidth;

        if (bIEQuirks) {

            oConfig = this.cfg;
            sOriginalWidth = oConfig.getProperty(&quot;width&quot;);

            if (!sOriginalWidth || sOriginalWidth == &quot;auto&quot;) {

                sNewWidth = (this.element.offsetWidth + &quot;px&quot;);

                oConfig.setProperty(&quot;width&quot;, sNewWidth);

                this.subscribe(&quot;hide&quot;, restoreOriginalWidth,
                    [(sOriginalWidth || &quot;&quot;), sNewWidth]);

            }
        }
    }

    YAHOO.extend(Panel, Overlay, {

        /**
        * The Overlay initialization method, which is executed for Overlay and
        * all of its subclasses. This method is automatically called by the
        * constructor, and  sets up all DOM references for pre-existing markup,
        * and creates required markup if it is not already present.
        * @method init
        * @param {String} el The element ID representing the Overlay &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the Overlay
        * @param {Object} userConfig The configuration object literal
        * containing the configuration that should be set for this Overlay.
        * See configuration documentation for more details.
        */
        init: function (el, userConfig) {
            /*
                 Note that we don't pass the user config in here yet because
                 we only want it executed once, at the lowest subclass level
            */

            Panel.superclass.init.call(this, el/*, userConfig*/);

            this.beforeInitEvent.fire(Panel);

            Dom.addClass(this.element, Panel.CSS_PANEL);

            this.buildWrapper();

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            this.subscribe(&quot;showMask&quot;, this._addFocusHandlers);
            this.subscribe(&quot;hideMask&quot;, this._removeFocusHandlers);
            this.subscribe(&quot;beforeRender&quot;, createHeader);

            this.subscribe(&quot;render&quot;, function() {
                this.setFirstLastFocusable();
                this.subscribe(&quot;changeContent&quot;, this.setFirstLastFocusable);
            });

            this.subscribe(&quot;show&quot;, this._focusOnShow);

            this.initEvent.fire(Panel);
        },

        /**
         * @method _onElementFocus
         * @private
         *
         * &quot;focus&quot; event handler for a focuable element. Used to automatically
         * blur the element when it receives focus to ensure that a Panel
         * instance's modality is not compromised.
         *
         * @param {Event} e The DOM event object
         */
        _onElementFocus : function(e){

            if(_currentModal === this) {

                var target = Event.getTarget(e),
                    doc = document.documentElement,
                    insideDoc = (target !== doc &amp;&amp; target !== window);

                // mask and documentElement checks added for IE, which focuses on the mask when it's clicked on, and focuses on
                // the documentElement, when the document scrollbars are clicked on
                if (insideDoc &amp;&amp; target !== this.element &amp;&amp; target !== this.mask &amp;&amp; !Dom.isAncestor(this.element, target)) {
                    try {
                        this._focusFirstModal();
                    } catch(err){
                        // Just in case we fail to focus
                        try {
                            if (insideDoc &amp;&amp; target !== document.body) {
                                target.blur();
                            }
                        } catch(err2) { }
                    }
                }
            }
        },

        /**
         * Focuses on the first element if present, otherwise falls back to the focus mechanisms used for
         * modality. This method does not try/catch focus failures. The caller is responsible for catching exceptions,
         * and taking remedial measures.
         *
         * @method _focusFirstModal
         */
        _focusFirstModal : function() {
            var el = this.firstElement;
            if (el) {
                el.focus();
            } else {
                if (this._modalFocus) {
                    this._modalFocus.focus();
                } else {
                    this.innerElement.focus();
                }
            }
        },

        /**
         *  @method _addFocusHandlers
         *  @protected
         *
         *  &quot;showMask&quot; event handler that adds a &quot;focus&quot; event handler to all
         *  focusable elements in the document to enforce a Panel instance's
         *  modality from being compromised.
         *
         *  @param p_sType {String} Custom event type
         *  @param p_aArgs {Array} Custom event arguments
         */
        _addFocusHandlers: function(p_sType, p_aArgs) {
            if (!this.firstElement) {
                if (UA.webkit || UA.opera) {
                    if (!this._modalFocus) {
                        this._createHiddenFocusElement();
                    }
                } else {
                    this.innerElement.tabIndex = 0;
                }
            }
            this._setTabLoop(this.firstElement, this.lastElement);
            Event.onFocus(document.documentElement, this._onElementFocus, this, true);
            _currentModal = this;
        },

        /**
         * Creates a hidden focusable element, used to focus on,
         * to enforce modality for browsers in which focus cannot
         * be applied to the container box.
         *
         * @method _createHiddenFocusElement
         * @private
         */
        _createHiddenFocusElement : function() {
            var e = document.createElement(&quot;button&quot;);
            e.style.height = &quot;1px&quot;;
            e.style.width = &quot;1px&quot;;
            e.style.position = &quot;absolute&quot;;
            e.style.left = &quot;-10000em&quot;;
            e.style.opacity = 0;
            e.tabIndex = -1;
            this.innerElement.appendChild(e);
            this._modalFocus = e;
        },

        /**
         *  @method _removeFocusHandlers
         *  @protected
         *
         *  &quot;hideMask&quot; event handler that removes all &quot;focus&quot; event handlers added
         *  by the &quot;addFocusEventHandlers&quot; method.
         *
         *  @param p_sType {String} Event type
         *  @param p_aArgs {Array} Event Arguments
         */
        _removeFocusHandlers: function(p_sType, p_aArgs) {
            Event.removeFocusListener(document.documentElement, this._onElementFocus, this);

            if (_currentModal == this) {
                _currentModal = null;
            }
        },

        /**
         * Focus handler for the show event
         *
         * @method _focusOnShow
         * @param {String} type Event Type
         * @param {Array} args Event arguments
         * @param {Object} obj Additional data
         */
        _focusOnShow : function(type, args, obj) {

            if (args &amp;&amp; args[1]) {
                Event.stopEvent(args[1]);
            }

            if (!this.focusFirst(type, args, obj)) {
                if (this.cfg.getProperty(&quot;modal&quot;)) {
                    this._focusFirstModal();
                }
            }
        },

        /**
         * Sets focus to the first element in the Panel.
         *
         * @method focusFirst
         * @return {Boolean} true, if successfully focused, false otherwise
         */
        focusFirst: function (type, args, obj) {
            var el = this.firstElement, focused = false;

            if (args &amp;&amp; args[1]) {
                Event.stopEvent(args[1]);
            }

            if (el) {
                try {
                    el.focus();
                    focused = true;
                } catch(err) {
                    // Ignore
                }
            }

            return focused;
        },

        /**
         * Sets focus to the last element in the Panel.
         *
         * @method focusLast
         * @return {Boolean} true, if successfully focused, false otherwise
         */
        focusLast: function (type, args, obj) {
            var el = this.lastElement, focused = false;

            if (args &amp;&amp; args[1]) {
                Event.stopEvent(args[1]);
            }

            if (el) {
                try {
                    el.focus();
                    focused = true;
                } catch(err) {
                    // Ignore
                }
            }

            return focused;
        },

        /**
         * Protected internal method for setTabLoop, which can be used by
         * subclasses to jump in and modify the arguments passed in if required.
         *
         * @method _setTabLoop
         * @param {HTMLElement} firstElement
         * @param {HTMLElement} lastElement
         * @protected
         *
         */
        _setTabLoop : function(firstElement, lastElement) {
            this.setTabLoop(firstElement, lastElement);
        },

        /**
         * Sets up a tab, shift-tab loop between the first and last elements
         * provided. NOTE: Sets up the preventBackTab and preventTabOut KeyListener
         * instance properties, which are reset everytime this method is invoked.
         *
         * @method setTabLoop
         * @param {HTMLElement} firstElement
         * @param {HTMLElement} lastElement
         *
         */
        setTabLoop : function(firstElement, lastElement) {

            var backTab = this.preventBackTab, tab = this.preventTabOut,
                showEvent = this.showEvent, hideEvent = this.hideEvent;

            if (backTab) {
                backTab.disable();
                showEvent.unsubscribe(backTab.enable, backTab);
                hideEvent.unsubscribe(backTab.disable, backTab);
                backTab = this.preventBackTab = null;
            }

            if (tab) {
                tab.disable();
                showEvent.unsubscribe(tab.enable, tab);
                hideEvent.unsubscribe(tab.disable,tab);
                tab = this.preventTabOut = null;
            }

            if (firstElement) {
                this.preventBackTab = new KeyListener(firstElement,
                    {shift:true, keys:9},
                    {fn:this.focusLast, scope:this, correctScope:true}
                );
                backTab = this.preventBackTab;

                showEvent.subscribe(backTab.enable, backTab, true);
                hideEvent.subscribe(backTab.disable,backTab, true);
            }

            if (lastElement) {
                this.preventTabOut = new KeyListener(lastElement,
                    {shift:false, keys:9},
                    {fn:this.focusFirst, scope:this, correctScope:true}
                );
                tab = this.preventTabOut;

                showEvent.subscribe(tab.enable, tab, true);
                hideEvent.subscribe(tab.disable,tab, true);
            }
        },

        /**
         * Returns an array of the currently focusable items which reside within
         * Panel. The set of focusable elements the method looks for are defined
         * in the Panel.FOCUSABLE static property
         *
         * @method getFocusableElements
         * @param {HTMLElement} root element to start from.
         */
        getFocusableElements : function(root) {

            root = root || this.innerElement;

            var focusable = {}, panel = this;
            for (var i = 0; i &lt; Panel.FOCUSABLE.length; i++) {
                focusable[Panel.FOCUSABLE[i]] = true;
            }

            // Not looking by Tag, since we want elements in DOM order

            return Dom.getElementsBy(function(el) { return panel._testIfFocusable(el, focusable); }, null, root);
        },

        /**
         * This is the test method used by getFocusableElements, to determine which elements to
         * include in the focusable elements list. Users may override this to customize behavior.
         *
         * @method _testIfFocusable
         * @param {Object} el The element being tested
         * @param {Object} focusable The hash of known focusable elements, created by an array-to-map operation on Panel.FOCUSABLE
         * @protected
         */
        _testIfFocusable: function(el, focusable) {
            if (el.focus &amp;&amp; el.type !== &quot;hidden&quot; &amp;&amp; !el.disabled &amp;&amp; focusable[el.tagName.toLowerCase()]) {
                return true;
            }
            return false;
        },

        /**
         * Sets the firstElement and lastElement instance properties
         * to the first and last focusable elements in the Panel.
         *
         * @method setFirstLastFocusable
         */
        setFirstLastFocusable : function() {

            this.firstElement = null;
            this.lastElement = null;

            var elements = this.getFocusableElements();
            this.focusableElements = elements;

            if (elements.length &gt; 0) {
                this.firstElement = elements[0];
                this.lastElement = elements[elements.length - 1];
            }

            if (this.cfg.getProperty(&quot;modal&quot;)) {
                this._setTabLoop(this.firstElement, this.lastElement);
            }
        },

        /**
         * Initializes the custom events for Module which are fired
         * automatically at appropriate times by the Module class.
         */
        initEvents: function () {
            Panel.superclass.initEvents.call(this);

            var SIGNATURE = CustomEvent.LIST;

            /**
            * CustomEvent fired after the modality mask is shown
            * @event showMaskEvent
            */
            this.showMaskEvent = this.createEvent(EVENT_TYPES.SHOW_MASK);
            this.showMaskEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired before the modality mask is shown. Subscribers can return false to prevent the
            * mask from being shown
            * @event beforeShowMaskEvent
            */
            this.beforeShowMaskEvent = this.createEvent(EVENT_TYPES.BEFORE_SHOW_MASK);
            this.beforeShowMaskEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after the modality mask is hidden
            * @event hideMaskEvent
            */
            this.hideMaskEvent = this.createEvent(EVENT_TYPES.HIDE_MASK);
            this.hideMaskEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired before the modality mask is hidden. Subscribers can return false to prevent the
            * mask from being hidden
            * @event beforeHideMaskEvent
            */
            this.beforeHideMaskEvent = this.createEvent(EVENT_TYPES.BEFORE_HIDE_MASK);
            this.beforeHideMaskEvent.signature = SIGNATURE;

            /**
            * CustomEvent when the Panel is dragged
            * @event dragEvent
            */
            this.dragEvent = this.createEvent(EVENT_TYPES.DRAG);
            this.dragEvent.signature = SIGNATURE;
        },

        /**
         * Initializes the class's configurable properties which can be changed
         * using the Panel's Config object (cfg).
         * @method initDefaultConfig
         */
        initDefaultConfig: function () {
            Panel.superclass.initDefaultConfig.call(this);

            // Add panel config properties //

            /**
            * True if the Panel should display a &quot;close&quot; button
            * @config close
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.CLOSE.key, {
                handler: this.configClose,
                value: DEFAULT_CONFIG.CLOSE.value,
                validator: DEFAULT_CONFIG.CLOSE.validator,
                supercedes: DEFAULT_CONFIG.CLOSE.supercedes
            });

            /**
            * Boolean specifying if the Panel should be draggable.  The default
            * value is &quot;true&quot; if the Drag and Drop utility is included,
            * otherwise it is &quot;false.&quot; &lt;strong&gt;PLEASE NOTE:&lt;/strong&gt; There is a
            * known issue in IE 6 (Strict Mode and Quirks Mode) and IE 7
            * (Quirks Mode) where Panels that either don't have a value set for
            * their &quot;width&quot; configuration property, or their &quot;width&quot;
            * configuration property is set to &quot;auto&quot; will only be draggable by
            * placing the mouse on the text of the Panel's header element.
            * To fix this bug, draggable Panels missing a value for their
            * &quot;width&quot; configuration property, or whose &quot;width&quot; configuration
            * property is set to &quot;auto&quot; will have it set to the value of
            * their root HTML element's offsetWidth before they are made
            * visible.  The calculated width is then removed when the Panel is
            * hidden. &lt;em&gt;This fix is only applied to draggable Panels in IE 6
            * (Strict Mode and Quirks Mode) and IE 7 (Quirks Mode)&lt;/em&gt;. For
            * more information on this issue see:
            * YUILibrary bugs #1726972 and #1589210.
            * @config draggable
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.DRAGGABLE.key, {
                handler: this.configDraggable,
                value: (Util.DD) ? true : false,
                validator: DEFAULT_CONFIG.DRAGGABLE.validator,
                supercedes: DEFAULT_CONFIG.DRAGGABLE.supercedes
            });

            /**
            * Boolean specifying if the draggable Panel should be drag only, not interacting with drop
            * targets on the page.
            * &lt;p&gt;
            * When set to true, draggable Panels will not check to see if they are over drop targets,
            * or fire the DragDrop events required to support drop target interaction (onDragEnter,
            * onDragOver, onDragOut, onDragDrop etc.).
            * If the Panel is not designed to be dropped on any target elements on the page, then this
            * flag can be set to true to improve performance.
            * &lt;/p&gt;
            * &lt;p&gt;
            * When set to false, all drop target related events will be fired.
            * &lt;/p&gt;
            * &lt;p&gt;
            * The property is set to false by default to maintain backwards compatibility but should be
            * set to true if drop target interaction is not required for the Panel, to improve performance.&lt;/p&gt;
            *
            * @config dragOnly
            * @type Boolean
            * @default false
            */
            this.cfg.addProperty(DEFAULT_CONFIG.DRAG_ONLY.key, {
                value: DEFAULT_CONFIG.DRAG_ONLY.value,
                validator: DEFAULT_CONFIG.DRAG_ONLY.validator,
                supercedes: DEFAULT_CONFIG.DRAG_ONLY.supercedes
            });

            /**
            * Sets the type of underlay to display for the Panel. Valid values
            * are &quot;shadow,&quot; &quot;matte,&quot; and &quot;none&quot;.  &lt;strong&gt;PLEASE NOTE:&lt;/strong&gt;
            * The creation of the underlay element is deferred until the Panel
            * is initially made visible.  For Gecko-based browsers on Mac
            * OS X the underlay elment is always created as it is used as a
            * shim to prevent Aqua scrollbars below a Panel instance from poking
            * through it (See YUILibrary bug #1723530).
            * @config underlay
            * @type String
            * @default shadow
            */
            this.cfg.addProperty(DEFAULT_CONFIG.UNDERLAY.key, {
                handler: this.configUnderlay,
                value: DEFAULT_CONFIG.UNDERLAY.value,
                supercedes: DEFAULT_CONFIG.UNDERLAY.supercedes
            });

            /**
            * True if the Panel should be displayed in a modal fashion,
            * automatically creating a transparent mask over the document that
            * will not be removed until the Panel is dismissed.
            * @config modal
            * @type Boolean
            * @default false
            */
            this.cfg.addProperty(DEFAULT_CONFIG.MODAL.key, {
                handler: this.configModal,
                value: DEFAULT_CONFIG.MODAL.value,
                validator: DEFAULT_CONFIG.MODAL.validator,
                supercedes: DEFAULT_CONFIG.MODAL.supercedes
            });

            /**
            * A KeyListener (or array of KeyListeners) that will be enabled
            * when the Panel is shown, and disabled when the Panel is hidden.
            * @config keylisteners
            * @type YAHOO.util.KeyListener[]
            * @default null
            */
            this.cfg.addProperty(DEFAULT_CONFIG.KEY_LISTENERS.key, {
                handler: this.configKeyListeners,
                suppressEvent: DEFAULT_CONFIG.KEY_LISTENERS.suppressEvent,
                supercedes: DEFAULT_CONFIG.KEY_LISTENERS.supercedes
            });

            /**
            * UI Strings used by the Panel. The strings are inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
            *
            * @config strings
            * @type Object
            * @default An object literal with the properties shown below:
            *     &lt;dl&gt;
            *         &lt;dt&gt;close&lt;/dt&gt;&lt;dd&gt;&lt;em&gt;HTML&lt;/em&gt; : The markup to use as the label for the close icon. Defaults to &quot;Close&quot;.&lt;/dd&gt;
            *     &lt;/dl&gt;
            */
            this.cfg.addProperty(DEFAULT_CONFIG.STRINGS.key, {
                value:DEFAULT_CONFIG.STRINGS.value,
                handler:this.configStrings,
                validator:DEFAULT_CONFIG.STRINGS.validator,
                supercedes:DEFAULT_CONFIG.STRINGS.supercedes
            });
        },

        // BEGIN BUILT-IN PROPERTY EVENT HANDLERS //

        /**
        * The default event handler fired when the &quot;close&quot; property is changed.
        * The method controls the appending or hiding of the close icon at the
        * top right of the Panel.
        * @method configClose
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configClose: function (type, args, obj) {

            var val = args[0],
                oClose = this.close,
                strings = this.cfg.getProperty(&quot;strings&quot;),
                fc;

            if (val) {
                if (!oClose) {

                    if (!m_oCloseIconTemplate) {
                        m_oCloseIconTemplate = document.createElement(&quot;a&quot;);
                        m_oCloseIconTemplate.className = &quot;container-close&quot;;
                        m_oCloseIconTemplate.href = &quot;#&quot;;
                    }

                    oClose = m_oCloseIconTemplate.cloneNode(true);

                    fc = this.innerElement.firstChild;

                    if (fc) {
                        this.innerElement.insertBefore(oClose, fc);
                    } else {
                        this.innerElement.appendChild(oClose);
                    }

                    oClose.innerHTML = (strings &amp;&amp; strings.close) ? strings.close : &quot;&amp;#160;&quot;;

                    Event.on(oClose, &quot;click&quot;, this._doClose, this, true);

                    this.close = oClose;

                } else {
                    oClose.style.display = &quot;block&quot;;
                }

            } else {
                if (oClose) {
                    oClose.style.display = &quot;none&quot;;
                }
            }

        },

        /**
         * Event handler for the close icon
         *
         * @method _doClose
         * @protected
         *
         * @param {DOMEvent} e
         */
        _doClose : function (e) {
            Event.preventDefault(e);
            this.hide();
        },

        /**
        * The default event handler fired when the &quot;draggable&quot; property
        * is changed.
        * @method configDraggable
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configDraggable: function (type, args, obj) {
            var val = args[0];

            if (val) {
                if (!Util.DD) {
                    YAHOO.log(&quot;DD dependency not met.&quot;, &quot;error&quot;);
                    this.cfg.setProperty(&quot;draggable&quot;, false);
                    return;
                }

                if (this.header) {
                    Dom.setStyle(this.header, &quot;cursor&quot;, &quot;move&quot;);
                    this.registerDragDrop();
                }

                this.subscribe(&quot;beforeShow&quot;, setWidthToOffsetWidth);

            } else {

                if (this.dd) {
                    this.dd.unreg();
                }

                if (this.header) {
                    Dom.setStyle(this.header,&quot;cursor&quot;,&quot;auto&quot;);
                }

                this.unsubscribe(&quot;beforeShow&quot;, setWidthToOffsetWidth);
            }
        },

        /**
        * The default event handler fired when the &quot;underlay&quot; property
        * is changed.
        * @method configUnderlay
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configUnderlay: function (type, args, obj) {

            var bMacGecko = (this.platform == &quot;mac&quot; &amp;&amp; UA.gecko),
                sUnderlay = args[0].toLowerCase(),
                oUnderlay = this.underlay,
                oElement = this.element;

            function createUnderlay() {
                var bNew = false;
                if (!oUnderlay) { // create if not already in DOM

                    if (!m_oUnderlayTemplate) {
                        m_oUnderlayTemplate = document.createElement(&quot;div&quot;);
                        m_oUnderlayTemplate.className = &quot;underlay&quot;;
                    }

                    oUnderlay = m_oUnderlayTemplate.cloneNode(false);
                    this.element.appendChild(oUnderlay);

                    this.underlay = oUnderlay;

                    if (bIEQuirks) {
                        this.sizeUnderlay();
                        this.cfg.subscribeToConfigEvent(&quot;width&quot;, this.sizeUnderlay);
                        this.cfg.subscribeToConfigEvent(&quot;height&quot;, this.sizeUnderlay);

                        this.changeContentEvent.subscribe(this.sizeUnderlay);
                        YAHOO.widget.Module.textResizeEvent.subscribe(this.sizeUnderlay, this, true);
                    }

                    if (UA.webkit &amp;&amp; UA.webkit &lt; 420) {
                        this.changeContentEvent.subscribe(this.forceUnderlayRedraw);
                    }

                    bNew = true;
                }
            }

            function onBeforeShow() {
                var bNew = createUnderlay.call(this);
                if (!bNew &amp;&amp; bIEQuirks) {
                    this.sizeUnderlay();
                }
                this._underlayDeferred = false;
                this.beforeShowEvent.unsubscribe(onBeforeShow);
            }

            function destroyUnderlay() {
                if (this._underlayDeferred) {
                    this.beforeShowEvent.unsubscribe(onBeforeShow);
                    this._underlayDeferred = false;
                }

                if (oUnderlay) {
                    this.cfg.unsubscribeFromConfigEvent(&quot;width&quot;, this.sizeUnderlay);
                    this.cfg.unsubscribeFromConfigEvent(&quot;height&quot;,this.sizeUnderlay);
                    this.changeContentEvent.unsubscribe(this.sizeUnderlay);
                    this.changeContentEvent.unsubscribe(this.forceUnderlayRedraw);
                    YAHOO.widget.Module.textResizeEvent.unsubscribe(this.sizeUnderlay, this, true);

                    this.element.removeChild(oUnderlay);

                    this.underlay = null;
                }
            }

            switch (sUnderlay) {
                case &quot;shadow&quot;:
                    Dom.removeClass(oElement, &quot;matte&quot;);
                    Dom.addClass(oElement, &quot;shadow&quot;);
                    break;
                case &quot;matte&quot;:
                    if (!bMacGecko) {
                        destroyUnderlay.call(this);
                    }
                    Dom.removeClass(oElement, &quot;shadow&quot;);
                    Dom.addClass(oElement, &quot;matte&quot;);
                    break;
                default:
                    if (!bMacGecko) {
                        destroyUnderlay.call(this);
                    }
                    Dom.removeClass(oElement, &quot;shadow&quot;);
                    Dom.removeClass(oElement, &quot;matte&quot;);
                    break;
            }

            if ((sUnderlay == &quot;shadow&quot;) || (bMacGecko &amp;&amp; !oUnderlay)) {
                if (this.cfg.getProperty(&quot;visible&quot;)) {
                    var bNew = createUnderlay.call(this);
                    if (!bNew &amp;&amp; bIEQuirks) {
                        this.sizeUnderlay();
                    }
                } else {
                    if (!this._underlayDeferred) {
                        this.beforeShowEvent.subscribe(onBeforeShow);
                        this._underlayDeferred = true;
                    }
                }
            }
        },

        /**
        * The default event handler fired when the &quot;modal&quot; property is
        * changed. This handler subscribes or unsubscribes to the show and hide
        * events to handle the display or hide of the modality mask.
        * @method configModal
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configModal: function (type, args, obj) {

            var modal = args[0];
            if (modal) {
                if (!this._hasModalityEventListeners) {

                    this.subscribe(&quot;beforeShow&quot;, this.buildMask);
                    this.subscribe(&quot;beforeShow&quot;, this.bringToTop);
                    this.subscribe(&quot;beforeShow&quot;, this.showMask);
                    this.subscribe(&quot;hide&quot;, this.hideMask);

                    Overlay.windowResizeEvent.subscribe(this.sizeMask,
                        this, true);

                    this._hasModalityEventListeners = true;
                }
            } else {
                if (this._hasModalityEventListeners) {

                    if (this.cfg.getProperty(&quot;visible&quot;)) {
                        this.hideMask();
                        this.removeMask();
                    }

                    this.unsubscribe(&quot;beforeShow&quot;, this.buildMask);
                    this.unsubscribe(&quot;beforeShow&quot;, this.bringToTop);
                    this.unsubscribe(&quot;beforeShow&quot;, this.showMask);
                    this.unsubscribe(&quot;hide&quot;, this.hideMask);

                    Overlay.windowResizeEvent.unsubscribe(this.sizeMask, this);

                    this._hasModalityEventListeners = false;
                }
            }
        },

        /**
        * Removes the modality mask.
        * @method removeMask
        */
        removeMask: function () {

            var oMask = this.mask,
                oParentNode;

            if (oMask) {
                /*
                    Hide the mask before destroying it to ensure that DOM
                    event handlers on focusable elements get removed.
                */
                this.hideMask();

                oParentNode = oMask.parentNode;
                if (oParentNode) {
                    oParentNode.removeChild(oMask);
                }

                this.mask = null;
            }
        },

        /**
        * The default event handler fired when the &quot;keylisteners&quot; property
        * is changed.
        * @method configKeyListeners
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configKeyListeners: function (type, args, obj) {

            var listeners = args[0],
                listener,
                nListeners,
                i;

            if (listeners) {

                if (listeners instanceof Array) {

                    nListeners = listeners.length;

                    for (i = 0; i &lt; nListeners; i++) {

                        listener = listeners[i];

                        if (!Config.alreadySubscribed(this.showEvent,
                            listener.enable, listener)) {

                            this.showEvent.subscribe(listener.enable,
                                listener, true);

                        }

                        if (!Config.alreadySubscribed(this.hideEvent,
                            listener.disable, listener)) {

                            this.hideEvent.subscribe(listener.disable,
                                listener, true);

                            this.destroyEvent.subscribe(listener.disable,
                                listener, true);
                        }
                    }

                } else {

                    if (!Config.alreadySubscribed(this.showEvent,
                        listeners.enable, listeners)) {

                        this.showEvent.subscribe(listeners.enable,
                            listeners, true);
                    }

                    if (!Config.alreadySubscribed(this.hideEvent,
                        listeners.disable, listeners)) {

                        this.hideEvent.subscribe(listeners.disable,
                            listeners, true);

                        this.destroyEvent.subscribe(listeners.disable,
                            listeners, true);

                    }

                }

            }

        },

        /**
        * The default handler for the &quot;strings&quot; property
        * @method configStrings
        */
        configStrings : function(type, args, obj) {
            var val = Lang.merge(DEFAULT_CONFIG.STRINGS.value, args[0]);
            this.cfg.setProperty(DEFAULT_CONFIG.STRINGS.key, val, true);
        },

        /**
        * The default event handler fired when the &quot;height&quot; property is changed.
        * @method configHeight
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configHeight: function (type, args, obj) {
            var height = args[0],
                el = this.innerElement;

            Dom.setStyle(el, &quot;height&quot;, height);
            this.cfg.refireEvent(&quot;iframe&quot;);
        },

        /**
         * The default custom event handler executed when the Panel's height is changed,
         * if the autofillheight property has been set.
         *
         * @method _autoFillOnHeightChange
         * @protected
         * @param {String} type The event type
         * @param {Array} args The array of arguments passed to event subscribers
         * @param {HTMLElement} el The header, body or footer element which is to be resized to fill
         * out the containers height
         */
        _autoFillOnHeightChange : function(type, args, el) {
            Panel.superclass._autoFillOnHeightChange.apply(this, arguments);
            if (bIEQuirks) {
                var panel = this;
                setTimeout(function() {
                    panel.sizeUnderlay();
                },0);
            }
        },

        /**
        * The default event handler fired when the &quot;width&quot; property is changed.
        * @method configWidth
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configWidth: function (type, args, obj) {

            var width = args[0],
                el = this.innerElement;

            Dom.setStyle(el, &quot;width&quot;, width);
            this.cfg.refireEvent(&quot;iframe&quot;);

        },

        /**
        * The default event handler fired when the &quot;zIndex&quot; property is changed.
        * @method configzIndex
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configzIndex: function (type, args, obj) {
            Panel.superclass.configzIndex.call(this, type, args, obj);

            if (this.mask || this.cfg.getProperty(&quot;modal&quot;) === true) {
                var panelZ = Dom.getStyle(this.element, &quot;zIndex&quot;);
                if (!panelZ || isNaN(panelZ)) {
                    panelZ = 0;
                }

                if (panelZ === 0) {
                    // Recursive call to configzindex (which should be stopped
                    // from going further because panelZ should no longer === 0)
                    this.cfg.setProperty(&quot;zIndex&quot;, 1);
                } else {
                    this.stackMask();
                }
            }
        },

        // END BUILT-IN PROPERTY EVENT HANDLERS //
        /**
        * Builds the wrapping container around the Panel that is used for
        * positioning the shadow and matte underlays. The container element is
        * assigned to a  local instance variable called container, and the
        * element is reinserted inside of it.
        * @method buildWrapper
        */
        buildWrapper: function () {

            var elementParent = this.element.parentNode,
                originalElement = this.element,
                wrapper = document.createElement(&quot;div&quot;);

            wrapper.className = Panel.CSS_PANEL_CONTAINER;
            wrapper.id = originalElement.id + &quot;_c&quot;;

            if (elementParent) {
                elementParent.insertBefore(wrapper, originalElement);
            }

            wrapper.appendChild(originalElement);

            this.element = wrapper;
            this.innerElement = originalElement;

            Dom.setStyle(this.innerElement, &quot;visibility&quot;, &quot;inherit&quot;);
        },

        /**
        * Adjusts the size of the shadow based on the size of the element.
        * @method sizeUnderlay
        */
        sizeUnderlay: function () {
            var oUnderlay = this.underlay,
                oElement;

            if (oUnderlay) {
                oElement = this.element;
                oUnderlay.style.width = oElement.offsetWidth + &quot;px&quot;;
                oUnderlay.style.height = oElement.offsetHeight + &quot;px&quot;;
            }
        },

        /**
        * Registers the Panel's header for drag &amp; drop capability.
        * @method registerDragDrop
        */
        registerDragDrop: function () {

            var me = this;

            if (this.header) {

                if (!Util.DD) {
                    YAHOO.log(&quot;DD dependency not met.&quot;, &quot;error&quot;);
                    return;
                }

                var bDragOnly = (this.cfg.getProperty(&quot;dragonly&quot;) === true);

                /**
                 * The YAHOO.util.DD instance, used to implement the draggable header for the panel if draggable is enabled
                 *
                 * @property dd
                 * @type YAHOO.util.DD
                 */
                this.dd = new Util.DD(this.element.id, this.id, {dragOnly: bDragOnly});

                if (!this.header.id) {
                    this.header.id = this.id + &quot;_h&quot;;
                }

                this.dd.startDrag = function () {

                    var offsetHeight,
                        offsetWidth,
                        viewPortWidth,
                        viewPortHeight,
                        scrollX,
                        scrollY;

                    if (YAHOO.env.ua.ie == 6) {
                        Dom.addClass(me.element,&quot;drag&quot;);
                    }

                    if (me.cfg.getProperty(&quot;constraintoviewport&quot;)) {

                        var nViewportOffset = Overlay.VIEWPORT_OFFSET;

                        offsetHeight = me.element.offsetHeight;
                        offsetWidth = me.element.offsetWidth;

                        viewPortWidth = Dom.getViewportWidth();
                        viewPortHeight = Dom.getViewportHeight();

                        scrollX = Dom.getDocumentScrollLeft();
                        scrollY = Dom.getDocumentScrollTop();

                        if (offsetHeight + nViewportOffset &lt; viewPortHeight) {
                            this.minY = scrollY + nViewportOffset;
                            this.maxY = scrollY + viewPortHeight - offsetHeight - nViewportOffset;
                        } else {
                            this.minY = scrollY + nViewportOffset;
                            this.maxY = scrollY + nViewportOffset;
                        }

                        if (offsetWidth + nViewportOffset &lt; viewPortWidth) {
                            this.minX = scrollX + nViewportOffset;
                            this.maxX = scrollX + viewPortWidth - offsetWidth - nViewportOffset;
                        } else {
                            this.minX = scrollX + nViewportOffset;
                            this.maxX = scrollX + nViewportOffset;
                        }

                        this.constrainX = true;
                        this.constrainY = true;
                    } else {
                        this.constrainX = false;
                        this.constrainY = false;
                    }

                    me.dragEvent.fire(&quot;startDrag&quot;, arguments);
                };

                this.dd.onDrag = function () {
                    me.syncPosition();
                    me.cfg.refireEvent(&quot;iframe&quot;);
                    if (this.platform == &quot;mac&quot; &amp;&amp; YAHOO.env.ua.gecko) {
                        this.showMacGeckoScrollbars();
                    }

                    me.dragEvent.fire(&quot;onDrag&quot;, arguments);
                };

                this.dd.endDrag = function () {

                    if (YAHOO.env.ua.ie == 6) {
                        Dom.removeClass(me.element,&quot;drag&quot;);
                    }

                    me.dragEvent.fire(&quot;endDrag&quot;, arguments);
                    me.moveEvent.fire(me.cfg.getProperty(&quot;xy&quot;));

                };

                this.dd.setHandleElId(this.header.id);
                this.dd.addInvalidHandleType(&quot;INPUT&quot;);
                this.dd.addInvalidHandleType(&quot;SELECT&quot;);
                this.dd.addInvalidHandleType(&quot;TEXTAREA&quot;);
            }
        },

        /**
        * Builds the mask that is laid over the document when the Panel is
        * configured to be modal.
        * @method buildMask
        */
        buildMask: function () {
            var oMask = this.mask;
            if (!oMask) {
                if (!m_oMaskTemplate) {
                    m_oMaskTemplate = document.createElement(&quot;div&quot;);
                    m_oMaskTemplate.className = &quot;mask&quot;;
                    m_oMaskTemplate.innerHTML = &quot;&amp;#160;&quot;;
                }
                oMask = m_oMaskTemplate.cloneNode(true);
                oMask.id = this.id + &quot;_mask&quot;;

                document.body.insertBefore(oMask, document.body.firstChild);

                this.mask = oMask;

                if (YAHOO.env.ua.gecko &amp;&amp; this.platform == &quot;mac&quot;) {
                    Dom.addClass(this.mask, &quot;block-scrollbars&quot;);
                }

                // Stack mask based on the element zindex
                this.stackMask();
            }
        },

        /**
        * Hides the modality mask.
        * @method hideMask
        */
        hideMask: function () {
            if (this.cfg.getProperty(&quot;modal&quot;) &amp;&amp; this.mask &amp;&amp; this.beforeHideMaskEvent.fire()) {
                this.mask.style.display = &quot;none&quot;;
                Dom.removeClass(document.body, &quot;masked&quot;);
                this.hideMaskEvent.fire();
            }
        },

        /**
        * Shows the modality mask.
        * @method showMask
        */
        showMask: function () {
            if (this.cfg.getProperty(&quot;modal&quot;) &amp;&amp; this.mask &amp;&amp; this.beforeShowMaskEvent.fire()) {
                Dom.addClass(document.body, &quot;masked&quot;);
                this.sizeMask();
                this.mask.style.display = &quot;block&quot;;
                this.showMaskEvent.fire();
            }
        },

        /**
        * Sets the size of the modality mask to cover the entire scrollable
        * area of the document
        * @method sizeMask
        */
        sizeMask: function () {
            if (this.mask) {

                // Shrink mask first, so it doesn't affect the document size.
                var mask = this.mask,
                    viewWidth = Dom.getViewportWidth(),
                    viewHeight = Dom.getViewportHeight();

                if (mask.offsetHeight &gt; viewHeight) {
                    mask.style.height = viewHeight + &quot;px&quot;;
                }

                if (mask.offsetWidth &gt; viewWidth) {
                    mask.style.width = viewWidth + &quot;px&quot;;
                }

                // Then size it to the document
                mask.style.height = Dom.getDocumentHeight() + &quot;px&quot;;
                mask.style.width = Dom.getDocumentWidth() + &quot;px&quot;;
            }
        },

        /**
         * Sets the zindex of the mask, if it exists, based on the zindex of
         * the Panel element. The zindex of the mask is set to be one less
         * than the Panel element's zindex.
         *
         * &lt;p&gt;NOTE: This method will not bump up the zindex of the Panel
         * to ensure that the mask has a non-negative zindex. If you require the
         * mask zindex to be 0 or higher, the zindex of the Panel
         * should be set to a value higher than 0, before this method is called.
         * &lt;/p&gt;
         * @method stackMask
         */
        stackMask: function() {
            if (this.mask) {
                var panelZ = Dom.getStyle(this.element, &quot;zIndex&quot;);
                if (!YAHOO.lang.isUndefined(panelZ) &amp;&amp; !isNaN(panelZ)) {
                    Dom.setStyle(this.mask, &quot;zIndex&quot;, panelZ - 1);
                }
            }
        },

        /**
        * Renders the Panel by inserting the elements that are not already in
        * the main Panel into their correct places. Optionally appends the
        * Panel to the specified node prior to the render's execution. NOTE:
        * For Panels without existing markup, the appendToNode argument is
        * REQUIRED. If this argument is ommitted and the current element is
        * not present in the document, the function will return false,
        * indicating that the render was a failure.
        * @method render
        * @param {String} appendToNode The element id to which the Module
        * should be appended to prior to rendering &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} appendToNode The element to which the Module
        * should be appended to prior to rendering
        * @return {boolean} Success or failure of the render
        */
        render: function (appendToNode) {
            return Panel.superclass.render.call(this, appendToNode, this.innerElement);
        },

        /**
         * Renders the currently set header into it's proper position under the
         * module element. If the module element is not provided, &quot;this.innerElement&quot;
         * is used.
         *
         * @method _renderHeader
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element
         */
        _renderHeader: function(moduleElement){
            moduleElement = moduleElement || this.innerElement;
			Panel.superclass._renderHeader.call(this, moduleElement);
        },

        /**
         * Renders the currently set body into it's proper position under the
         * module element. If the module element is not provided, &quot;this.innerElement&quot;
         * is used.
         *
         * @method _renderBody
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element.
         */
        _renderBody: function(moduleElement){
            moduleElement = moduleElement || this.innerElement;
            Panel.superclass._renderBody.call(this, moduleElement);
        },

        /**
         * Renders the currently set footer into it's proper position under the
         * module element. If the module element is not provided, &quot;this.innerElement&quot;
         * is used.
         *
         * @method _renderFooter
         * @protected
         * @param {HTMLElement} moduleElement Optional. A reference to the module element
         */
        _renderFooter: function(moduleElement){
            moduleElement = moduleElement || this.innerElement;
            Panel.superclass._renderFooter.call(this, moduleElement);
        },

        /**
        * Removes the Panel element from the DOM and sets all child elements
        * to null.
        * @method destroy
        * @param {boolean} shallowPurge If true, only the parent element's DOM event listeners are purged. If false, or not provided, all children are also purged of DOM event listeners.
        * NOTE: The flag is a &quot;shallowPurge&quot; flag, as opposed to what may be a more intuitive &quot;purgeChildren&quot; flag to maintain backwards compatibility with behavior prior to 2.9.0.
        */
        destroy: function (shallowPurge) {
            Overlay.windowResizeEvent.unsubscribe(this.sizeMask, this);
            this.removeMask();
            if (this.close) {
                Event.purgeElement(this.close);
            }
            Panel.superclass.destroy.call(this, shallowPurge);
        },

        /**
         * Forces the underlay element to be repainted through the application/removal
         * of a yui-force-redraw class to the underlay element.
         *
         * @method forceUnderlayRedraw
         */
        forceUnderlayRedraw : function () {
            var u = this.underlay;
            Dom.addClass(u, &quot;yui-force-redraw&quot;);
            setTimeout(function(){Dom.removeClass(u, &quot;yui-force-redraw&quot;);}, 0);
        },

        /**
        * Returns a String representation of the object.
        * @method toString
        * @return {String} The string representation of the Panel.
        */
        toString: function () {
            return &quot;Panel &quot; + this.id;
        }

    });

}());
(function () {

    /**
    * &lt;p&gt;
    * Dialog is an implementation of Panel that can be used to submit form
    * data.
    * &lt;/p&gt;
    * &lt;p&gt;
    * Built-in functionality for buttons with event handlers is included.
    * If the optional YUI Button dependancy is included on the page, the buttons
    * created will be instances of YAHOO.widget.Button, otherwise regular HTML buttons
    * will be created.
    * &lt;/p&gt;
    * &lt;p&gt;
    * Forms can be processed in 3 ways -- via an asynchronous Connection utility call,
    * a simple form POST or GET, or manually. The YUI Connection utility should be
    * included if you're using the default &quot;async&quot; postmethod, but is not required if
    * you're using any of the other postmethod values.
    * &lt;/p&gt;
    * @namespace YAHOO.widget
    * @class Dialog
    * @extends YAHOO.widget.Panel
    * @constructor
    * @param {String} el The element ID representing the Dialog &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the Dialog
    * @param {Object} userConfig The configuration object literal containing
    * the configuration that should be set for this Dialog. See configuration
    * documentation for more details.
    */
    YAHOO.widget.Dialog = function (el, userConfig) {
        YAHOO.widget.Dialog.superclass.constructor.call(this, el, userConfig);
    };

    var Event = YAHOO.util.Event,
        CustomEvent = YAHOO.util.CustomEvent,
        Dom = YAHOO.util.Dom,
        Dialog = YAHOO.widget.Dialog,
        Lang = YAHOO.lang,

        /**
         * Constant representing the name of the Dialog's events
         * @property EVENT_TYPES
         * @private
         * @final
         * @type Object
         */
        EVENT_TYPES = {
            &quot;BEFORE_SUBMIT&quot;: &quot;beforeSubmit&quot;,
            &quot;SUBMIT&quot;: &quot;submit&quot;,
            &quot;MANUAL_SUBMIT&quot;: &quot;manualSubmit&quot;,
            &quot;ASYNC_SUBMIT&quot;: &quot;asyncSubmit&quot;,
            &quot;FORM_SUBMIT&quot;: &quot;formSubmit&quot;,
            &quot;CANCEL&quot;: &quot;cancel&quot;
        },

        /**
        * Constant representing the Dialog's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;POST_METHOD&quot;: {
                key: &quot;postmethod&quot;,
                value: &quot;async&quot;
            },

            &quot;POST_DATA&quot; : {
                key: &quot;postdata&quot;,
                value: null
            },

            &quot;BUTTONS&quot;: {
                key: &quot;buttons&quot;,
                value: &quot;none&quot;,
                supercedes: [&quot;visible&quot;]
            },

            &quot;HIDEAFTERSUBMIT&quot; : {
                key: &quot;hideaftersubmit&quot;,
                value: true
            }

        };

    /**
    * Constant representing the default CSS class used for a Dialog
    * @property YAHOO.widget.Dialog.CSS_DIALOG
    * @static
    * @final
    * @type String
    */
    Dialog.CSS_DIALOG = &quot;yui-dialog&quot;;

    function removeButtonEventHandlers() {

        var aButtons = this._aButtons,
            nButtons,
            oButton,
            i;

        if (Lang.isArray(aButtons)) {
            nButtons = aButtons.length;

            if (nButtons &gt; 0) {
                i = nButtons - 1;
                do {
                    oButton = aButtons[i];

                    if (YAHOO.widget.Button &amp;&amp; oButton instanceof YAHOO.widget.Button) {
                        oButton.destroy();
                    }
                    else if (oButton.tagName.toUpperCase() == &quot;BUTTON&quot;) {
                        Event.purgeElement(oButton);
                        Event.purgeElement(oButton, false);
                    }
                }
                while (i--);
            }
        }
    }

    YAHOO.extend(Dialog, YAHOO.widget.Panel, {

        /**
        * @property form
        * @description Object reference to the Dialog's
        * &lt;code&gt;&amp;#60;form&amp;#62;&lt;/code&gt; element.
        * @default null
        * @type &lt;a href=&quot;http://www.w3.org/TR/2000/WD-DOM-Level-1-20000929/
        * level-one-html.html#ID-40002357&quot;&gt;HTMLFormElement&lt;/a&gt;
        */
        form: null,

        /**
        * Initializes the class's configurable properties which can be changed
        * using the Dialog's Config object (cfg).
        * @method initDefaultConfig
        */
        initDefaultConfig: function () {
            Dialog.superclass.initDefaultConfig.call(this);

            /**
            * The internally maintained callback object for use with the
            * Connection utility. The format of the callback object is
            * similar to Connection Manager's callback object and is
            * simply passed through to Connection Manager when the async
            * request is made.
            * @property callback
            * @type Object
            */
            this.callback = {

                /**
                * The function to execute upon success of the
                * Connection submission (when the form does not
                * contain a file input element).
                *
                * @property callback.success
                * @type Function
                */
                success: null,

                /**
                * The function to execute upon failure of the
                * Connection submission
                * @property callback.failure
                * @type Function
                */
                failure: null,

                /**
                *&lt;p&gt;
                * The function to execute upon success of the
                * Connection submission, when the form contains
                * a file input element.
                * &lt;/p&gt;
                * &lt;p&gt;
                * &lt;em&gt;NOTE:&lt;/em&gt; Connection manager will not
                * invoke the success or failure handlers for the file
                * upload use case. This will be the only callback
                * handler invoked.
                * &lt;/p&gt;
                * &lt;p&gt;
                * For more information, see the &lt;a href=&quot;http://developer.yahoo.com/yui/connection/#file&quot;&gt;
                * Connection Manager documenation on file uploads&lt;/a&gt;.
                * &lt;/p&gt;
                * @property callback.upload
                * @type Function
                */

                /**
                * The arbitrary argument or arguments to pass to the Connection
                * callback functions
                * @property callback.argument
                * @type Object
                */
                argument: null

            };

            // Add form dialog config properties //
            /**
            * The method to use for posting the Dialog's form. Possible values
            * are &quot;async&quot;, &quot;form&quot;, and &quot;manual&quot;.
            * @config postmethod
            * @type String
            * @default async
            */
            this.cfg.addProperty(DEFAULT_CONFIG.POST_METHOD.key, {
                handler: this.configPostMethod,
                value: DEFAULT_CONFIG.POST_METHOD.value,
                validator: function (val) {
                    if (val != &quot;form&quot; &amp;&amp; val != &quot;async&quot; &amp;&amp; val != &quot;none&quot; &amp;&amp;
                        val != &quot;manual&quot;) {
                        return false;
                    } else {
                        return true;
                    }
                }
            });

            /**
            * Any additional post data which needs to be sent when using the
            * &lt;a href=&quot;#config_postmethod&quot;&gt;async&lt;/a&gt; postmethod for dialog POST submissions.
            * The format for the post data string is defined by Connection Manager's
            * &lt;a href=&quot;YAHOO.util.Connect.html#method_asyncRequest&quot;&gt;asyncRequest&lt;/a&gt;
            * method.
            * @config postdata
            * @type String
            * @default null
            */
            this.cfg.addProperty(DEFAULT_CONFIG.POST_DATA.key, {
                value: DEFAULT_CONFIG.POST_DATA.value
            });

            /**
            * This property is used to configure whether or not the
            * dialog should be automatically hidden after submit.
            *
            * @config hideaftersubmit
            * @type Boolean
            * @default true
            */
            this.cfg.addProperty(DEFAULT_CONFIG.HIDEAFTERSUBMIT.key, {
                value: DEFAULT_CONFIG.HIDEAFTERSUBMIT.value
            });

            /**
            * Array of object literals, each containing a set of properties
            * defining a button to be appended into the Dialog's footer.
            *
            * &lt;p&gt;Each button object in the buttons array can have three properties:&lt;/p&gt;
            * &lt;dl&gt;
            *    &lt;dt&gt;text:&lt;/dt&gt;
            *    &lt;dd&gt;
            *       The text that will display on the face of the button. The text can
            *       include HTML, as long as it is compliant with HTML Button specifications. The text is added to the DOM as HTML,
            *       and should be escaped by the implementor if coming from an external source.
            *    &lt;/dd&gt;
            *    &lt;dt&gt;handler:&lt;/dt&gt;
            *    &lt;dd&gt;Can be either:
            *    &lt;ol&gt;
            *       &lt;li&gt;A reference to a function that should fire when the
            *       button is clicked.  (In this case scope of this function is
            *       always its Dialog instance.)&lt;/li&gt;
            *
            *       &lt;li&gt;An object literal representing the code to be
            *       executed when the button is clicked.
            *
            *       &lt;p&gt;Format:&lt;/p&gt;
            *
            *       &lt;p&gt;
            *       &lt;code&gt;{
            *       &lt;br&gt;
            *       &lt;strong&gt;fn:&lt;/strong&gt; Function, &amp;#47;&amp;#47;
            *       The handler to call when  the event fires.
            *       &lt;br&gt;
            *       &lt;strong&gt;obj:&lt;/strong&gt; Object, &amp;#47;&amp;#47;
            *       An  object to pass back to the handler.
            *       &lt;br&gt;
            *       &lt;strong&gt;scope:&lt;/strong&gt; Object &amp;#47;&amp;#47;
            *       The object to use for the scope of the handler.
            *       &lt;br&gt;
            *       }&lt;/code&gt;
            *       &lt;/p&gt;
            *       &lt;/li&gt;
            *     &lt;/ol&gt;
            *     &lt;/dd&gt;
            *     &lt;dt&gt;isDefault:&lt;/dt&gt;
            *     &lt;dd&gt;
            *        An optional boolean value that specifies that a button
            *        should be highlighted and focused by default.
            *     &lt;/dd&gt;
            * &lt;/dl&gt;
            *
            * &lt;em&gt;NOTE:&lt;/em&gt;If the YUI Button Widget is included on the page,
            * the buttons created will be instances of YAHOO.widget.Button.
            * Otherwise, HTML Buttons (&lt;code&gt;&amp;#60;BUTTON&amp;#62;&lt;/code&gt;) will be
            * created.
            *
            * @config buttons
            * @type {Array|String}
            * @default &quot;none&quot;
            */
            this.cfg.addProperty(DEFAULT_CONFIG.BUTTONS.key, {
                handler: this.configButtons,
                value: DEFAULT_CONFIG.BUTTONS.value,
                supercedes : DEFAULT_CONFIG.BUTTONS.supercedes
            });

        },

        /**
        * Initializes the custom events for Dialog which are fired
        * automatically at appropriate times by the Dialog class.
        * @method initEvents
        */
        initEvents: function () {
            Dialog.superclass.initEvents.call(this);

            var SIGNATURE = CustomEvent.LIST;

            /**
            * CustomEvent fired prior to submission
            * @event beforeSubmitEvent
            */
            this.beforeSubmitEvent =
                this.createEvent(EVENT_TYPES.BEFORE_SUBMIT);
            this.beforeSubmitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after submission
            * @event submitEvent
            */
            this.submitEvent = this.createEvent(EVENT_TYPES.SUBMIT);
            this.submitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired for manual submission, before the generic submit event is fired
            * @event manualSubmitEvent
            */
            this.manualSubmitEvent =
                this.createEvent(EVENT_TYPES.MANUAL_SUBMIT);
            this.manualSubmitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after asynchronous submission, before the generic submit event is fired
            *
            * @event asyncSubmitEvent
            * @param {Object} conn The connection object, returned by YAHOO.util.Connect.asyncRequest
            */
            this.asyncSubmitEvent = this.createEvent(EVENT_TYPES.ASYNC_SUBMIT);
            this.asyncSubmitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after form-based submission, before the generic submit event is fired
            * @event formSubmitEvent
            */
            this.formSubmitEvent = this.createEvent(EVENT_TYPES.FORM_SUBMIT);
            this.formSubmitEvent.signature = SIGNATURE;

            /**
            * CustomEvent fired after cancel
            * @event cancelEvent
            */
            this.cancelEvent = this.createEvent(EVENT_TYPES.CANCEL);
            this.cancelEvent.signature = SIGNATURE;

        },

        /**
        * The Dialog initialization method, which is executed for Dialog and
        * all of its subclasses. This method is automatically called by the
        * constructor, and  sets up all DOM references for pre-existing markup,
        * and creates required markup if it is not already present.
        *
        * @method init
        * @param {String} el The element ID representing the Dialog &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the Dialog
        * @param {Object} userConfig The configuration object literal
        * containing the configuration that should be set for this Dialog.
        * See configuration documentation for more details.
        */
        init: function (el, userConfig) {

            /*
                 Note that we don't pass the user config in here yet because
                 we only want it executed once, at the lowest subclass level
            */

            Dialog.superclass.init.call(this, el/*, userConfig*/);

            this.beforeInitEvent.fire(Dialog);

            Dom.addClass(this.element, Dialog.CSS_DIALOG);

            this.cfg.setProperty(&quot;visible&quot;, false);

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            //this.showEvent.subscribe(this.focusFirst, this, true);
            this.beforeHideEvent.subscribe(this.blurButtons, this, true);

            this.subscribe(&quot;changeBody&quot;, this.registerForm);

            this.initEvent.fire(Dialog);
        },

        /**
        * Submits the Dialog's form depending on the value of the
        * &quot;postmethod&quot; configuration property.  &lt;strong&gt;Please note:
        * &lt;/strong&gt; As of version 2.3 this method will automatically handle
        * asyncronous file uploads should the Dialog instance's form contain
        * &lt;code&gt;&amp;#60;input type=&quot;file&quot;&amp;#62;&lt;/code&gt; elements.  If a Dialog
        * instance will be handling asyncronous file uploads, its
        * &lt;code&gt;callback&lt;/code&gt; property will need to be setup with a
        * &lt;code&gt;upload&lt;/code&gt; handler rather than the standard
        * &lt;code&gt;success&lt;/code&gt; and, or &lt;code&gt;failure&lt;/code&gt; handlers.  For more
        * information, see the &lt;a href=&quot;http://developer.yahoo.com/yui/
        * connection/#file&quot;&gt;Connection Manager documenation on file uploads&lt;/a&gt;.
        * @method doSubmit
        */
        doSubmit: function () {

            var Connect = YAHOO.util.Connect,
                oForm = this.form,
                bUseFileUpload = false,
                bUseSecureFileUpload = false,
                aElements,
                nElements,
                i,
                formAttrs;

            switch (this.cfg.getProperty(&quot;postmethod&quot;)) {

                case &quot;async&quot;:
                    aElements = oForm.elements;
                    nElements = aElements.length;

                    if (nElements &gt; 0) {
                        i = nElements - 1;
                        do {
                            if (aElements[i].type == &quot;file&quot;) {
                                bUseFileUpload = true;
                                break;
                            }
                        }
                        while(i--);
                    }

                    if (bUseFileUpload &amp;&amp; YAHOO.env.ua.ie &amp;&amp; this.isSecure) {
                        bUseSecureFileUpload = true;
                    }

                    formAttrs = this._getFormAttributes(oForm);

                    Connect.setForm(oForm, bUseFileUpload, bUseSecureFileUpload);

                    var postData = this.cfg.getProperty(&quot;postdata&quot;);
                    var c = Connect.asyncRequest(formAttrs.method, formAttrs.action, this.callback, postData);

                    this.asyncSubmitEvent.fire(c);

                    break;

                case &quot;form&quot;:
                    oForm.submit();
                    this.formSubmitEvent.fire();
                    break;

                case &quot;none&quot;:
                case &quot;manual&quot;:
                    this.manualSubmitEvent.fire();
                    break;
            }
        },

        /**
         * Retrieves important attributes (currently method and action) from
         * the form element, accounting for any elements which may have the same name
         * as the attributes. Defaults to &quot;POST&quot; and &quot;&quot; for method and action respectively
         * if the attribute cannot be retrieved.
         *
         * @method _getFormAttributes
         * @protected
         * @param {HTMLFormElement} oForm The HTML Form element from which to retrieve the attributes
         * @return {Object} Object literal, with method and action String properties.
         */
        _getFormAttributes : function(oForm){
            var attrs = {
                method : null,
                action : null
            };

            if (oForm) {
                if (oForm.getAttributeNode) {
                    var action = oForm.getAttributeNode(&quot;action&quot;);
                    var method = oForm.getAttributeNode(&quot;method&quot;);

                    if (action) {
                        attrs.action = action.value;
                    }

                    if (method) {
                        attrs.method = method.value;
                    }

                } else {
                    attrs.action = oForm.getAttribute(&quot;action&quot;);
                    attrs.method = oForm.getAttribute(&quot;method&quot;);
                }
            }

            attrs.method = (Lang.isString(attrs.method) ? attrs.method : &quot;POST&quot;).toUpperCase();
            attrs.action = Lang.isString(attrs.action) ? attrs.action : &quot;&quot;;

            return attrs;
        },

        /**
        * Prepares the Dialog's internal FORM object, creating one if one is
        * not currently present.
        * @method registerForm
        */
        registerForm: function() {

            var form = this.element.getElementsByTagName(&quot;form&quot;)[0];

            if (this.form) {
                if (this.form == form &amp;&amp; Dom.isAncestor(this.element, this.form)) {
                    return;
                } else {
                    Event.purgeElement(this.form);
                    this.form = null;
                }
            }

            if (!form) {
                form = document.createElement(&quot;form&quot;);
                form.name = &quot;frm_&quot; + this.id;
                this.body.appendChild(form);
            }

            if (form) {
                this.form = form;
                Event.on(form, &quot;submit&quot;, this._submitHandler, this, true);
            }
        },

        /**
         * Internal handler for the form submit event
         *
         * @method _submitHandler
         * @protected
         * @param {DOMEvent} e The DOM Event object
         */
        _submitHandler : function(e) {
            Event.stopEvent(e);
            this.submit();
            this.form.blur();
        },

        /**
         * Sets up a tab, shift-tab loop between the first and last elements
         * provided. NOTE: Sets up the preventBackTab and preventTabOut KeyListener
         * instance properties, which are reset everytime this method is invoked.
         *
         * @method setTabLoop
         * @param {HTMLElement} firstElement
         * @param {HTMLElement} lastElement
         *
         */
        setTabLoop : function(firstElement, lastElement) {

            firstElement = firstElement || this.firstButton;
            lastElement = lastElement || this.lastButton;

            Dialog.superclass.setTabLoop.call(this, firstElement, lastElement);
        },

        /**
         * Protected internal method for setTabLoop, which can be used by
         * subclasses to jump in and modify the arguments passed in if required.
         *
         * @method _setTabLoop
         * @param {HTMLElement} firstElement
         * @param {HTMLElement} lastElement
         * @protected
         */
        _setTabLoop : function(firstElement, lastElement) {
            firstElement = firstElement || this.firstButton;
            lastElement = this.lastButton || lastElement;

            this.setTabLoop(firstElement, lastElement);
        },

        /**
         * Configures instance properties, pointing to the
         * first and last focusable elements in the Dialog's form.
         *
         * @method setFirstLastFocusable
         */
        setFirstLastFocusable : function() {

            Dialog.superclass.setFirstLastFocusable.call(this);

            var i, l, el, elements = this.focusableElements;

            this.firstFormElement = null;
            this.lastFormElement = null;

            if (this.form &amp;&amp; elements &amp;&amp; elements.length &gt; 0) {
                l = elements.length;

                for (i = 0; i &lt; l; ++i) {
                    el = elements[i];
                    if (this.form === el.form) {
                        this.firstFormElement = el;
                        break;
                    }
                }

                for (i = l-1; i &gt;= 0; --i) {
                    el = elements[i];
                    if (this.form === el.form) {
                        this.lastFormElement = el;
                        break;
                    }
                }
            }
        },

        // BEGIN BUILT-IN PROPERTY EVENT HANDLERS //
        /**
        * The default event handler fired when the &quot;close&quot; property is
        * changed. The method controls the appending or hiding of the close
        * icon at the top right of the Dialog.
        * @method configClose
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For
        * configuration handlers, args[0] will equal the newly applied value
        * for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configClose: function (type, args, obj) {
            Dialog.superclass.configClose.apply(this, arguments);
        },

        /**
         * Event handler for the close icon
         *
         * @method _doClose
         * @protected
         *
         * @param {DOMEvent} e
         */
         _doClose : function(e) {
            Event.preventDefault(e);
            this.cancel();
        },

        /**
        * The default event handler for the &quot;buttons&quot; configuration property
        * @method configButtons
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configButtons: function (type, args, obj) {

            var Button = YAHOO.widget.Button,
                aButtons = args[0],
                oInnerElement = this.innerElement,
                oButton,
                oButtonEl,
                oYUIButton,
                nButtons,
                oSpan,
                oFooter,
                i;

            removeButtonEventHandlers.call(this);

            this._aButtons = null;

            if (Lang.isArray(aButtons)) {

                oSpan = document.createElement(&quot;span&quot;);
                oSpan.className = &quot;button-group&quot;;
                nButtons = aButtons.length;

                this._aButtons = [];
                this.defaultHtmlButton = null;

                for (i = 0; i &lt; nButtons; i++) {
                    oButton = aButtons[i];

                    if (Button) {
                        oYUIButton = new Button({ label: oButton.text, type:oButton.type });
                        oYUIButton.appendTo(oSpan);

                        oButtonEl = oYUIButton.get(&quot;element&quot;);

                        if (oButton.isDefault) {
                            oYUIButton.addClass(&quot;default&quot;);
                            this.defaultHtmlButton = oButtonEl;
                        }

                        if (Lang.isFunction(oButton.handler)) {

                            oYUIButton.set(&quot;onclick&quot;, {
                                fn: oButton.handler,
                                obj: this,
                                scope: this
                            });

                        } else if (Lang.isObject(oButton.handler) &amp;&amp; Lang.isFunction(oButton.handler.fn)) {

                            oYUIButton.set(&quot;onclick&quot;, {
                                fn: oButton.handler.fn,
                                obj: ((!Lang.isUndefined(oButton.handler.obj)) ? oButton.handler.obj : this),
                                scope: (oButton.handler.scope || this)
                            });

                        }

                        this._aButtons[this._aButtons.length] = oYUIButton;

                    } else {

                        oButtonEl = document.createElement(&quot;button&quot;);
                        oButtonEl.setAttribute(&quot;type&quot;, &quot;button&quot;);

                        if (oButton.isDefault) {
                            oButtonEl.className = &quot;default&quot;;
                            this.defaultHtmlButton = oButtonEl;
                        }

                        oButtonEl.innerHTML = oButton.text;

                        if (Lang.isFunction(oButton.handler)) {
                            Event.on(oButtonEl, &quot;click&quot;, oButton.handler, this, true);
                        } else if (Lang.isObject(oButton.handler) &amp;&amp;
                            Lang.isFunction(oButton.handler.fn)) {

                            Event.on(oButtonEl, &quot;click&quot;,
                                oButton.handler.fn,
                                ((!Lang.isUndefined(oButton.handler.obj)) ? oButton.handler.obj : this),
                                (oButton.handler.scope || this));
                        }

                        oSpan.appendChild(oButtonEl);
                        this._aButtons[this._aButtons.length] = oButtonEl;
                    }

                    oButton.htmlButton = oButtonEl;

                    if (i === 0) {
                        this.firstButton = oButtonEl;
                    }

                    if (i == (nButtons - 1)) {
                        this.lastButton = oButtonEl;
                    }
                }

                this.setFooter(oSpan);

                oFooter = this.footer;

                if (Dom.inDocument(this.element) &amp;&amp; !Dom.isAncestor(oInnerElement, oFooter)) {
                    oInnerElement.appendChild(oFooter);
                }

                this.buttonSpan = oSpan;

            } else { // Do cleanup
                oSpan = this.buttonSpan;
                oFooter = this.footer;
                if (oSpan &amp;&amp; oFooter) {
                    oFooter.removeChild(oSpan);
                    this.buttonSpan = null;
                    this.firstButton = null;
                    this.lastButton = null;
                    this.defaultHtmlButton = null;
                }
            }

            this.changeContentEvent.fire();
        },

        /**
        * @method getButtons
        * @description Returns an array containing each of the Dialog's
        * buttons, by default an array of HTML &lt;code&gt;&amp;#60;BUTTON&amp;#62;&lt;/code&gt;
        * elements.  If the Dialog's buttons were created using the
        * YAHOO.widget.Button class (via the inclusion of the optional Button
        * dependency on the page), an array of YAHOO.widget.Button instances
        * is returned.
        * @return {Array}
        */
        getButtons: function () {
            return this._aButtons || null;
        },

        /**
         * &lt;p&gt;
         * Sets focus to the first focusable element in the Dialog's form if found,
         * else, the default button if found, else the first button defined via the
         * &quot;buttons&quot; configuration property.
         * &lt;/p&gt;
         * &lt;p&gt;
         * This method is invoked when the Dialog is made visible.
         * &lt;/p&gt;
         * @method focusFirst
         * @return {Boolean} true, if focused. false if not
         */
        focusFirst: function (type, args, obj) {

            var el = this.firstFormElement,
                focused = false;

            if (args &amp;&amp; args[1]) {
                Event.stopEvent(args[1]);

                // When tabbing here, use firstElement instead of firstFormElement
                if (args[0] === 9 &amp;&amp; this.firstElement) {
                    el = this.firstElement;
                }
            }

            if (el) {
                try {
                    el.focus();
                    focused = true;
                } catch(oException) {
                    // Ignore
                }
            } else {
                if (this.defaultHtmlButton) {
                    focused = this.focusDefaultButton();
                } else {
                    focused = this.focusFirstButton();
                }
            }
            return focused;
        },

        /**
        * Sets focus to the last element in the Dialog's form or the last
        * button defined via the &quot;buttons&quot; configuration property.
        * @method focusLast
        * @return {Boolean} true, if focused. false if not
        */
        focusLast: function (type, args, obj) {

            var aButtons = this.cfg.getProperty(&quot;buttons&quot;),
                el = this.lastFormElement,
                focused = false;

            if (args &amp;&amp; args[1]) {
                Event.stopEvent(args[1]);

                // When tabbing here, use lastElement instead of lastFormElement
                if (args[0] === 9 &amp;&amp; this.lastElement) {
                    el = this.lastElement;
                }
            }

            if (aButtons &amp;&amp; Lang.isArray(aButtons)) {
                focused = this.focusLastButton();
            } else {
                if (el) {
                    try {
                        el.focus();
                        focused = true;
                    } catch(oException) {
                        // Ignore
                    }
                }
            }

            return focused;
        },

        /**
         * Helper method to normalize button references. It either returns the
         * YUI Button instance for the given element if found,
         * or the passes back the HTMLElement reference if a corresponding YUI Button
         * reference is not found or YAHOO.widget.Button does not exist on the page.
         *
         * @method _getButton
         * @private
         * @param {HTMLElement} button
         * @return {YAHOO.widget.Button|HTMLElement}
         */
        _getButton : function(button) {
            var Button = YAHOO.widget.Button;

            // If we have an HTML button and YUI Button is on the page,
            // get the YUI Button reference if available.
            if (Button &amp;&amp; button &amp;&amp; button.nodeName &amp;&amp; button.id) {
                button = Button.getButton(button.id) || button;
            }

            return button;
        },

        /**
        * Sets the focus to the button that is designated as the default via
        * the &quot;buttons&quot; configuration property. By default, this method is
        * called when the Dialog is made visible.
        * @method focusDefaultButton
        * @return {Boolean} true if focused, false if not
        */
        focusDefaultButton: function () {
            var button = this._getButton(this.defaultHtmlButton),
                         focused = false;

            if (button) {
                /*
                    Place the call to the &quot;focus&quot; method inside a try/catch
                    block to prevent IE from throwing JavaScript errors if
                    the element is disabled or hidden.
                */
                try {
                    button.focus();
                    focused = true;
                } catch(oException) {
                }
            }
            return focused;
        },

        /**
        * Blurs all the buttons defined via the &quot;buttons&quot;
        * configuration property.
        * @method blurButtons
        */
        blurButtons: function () {

            var aButtons = this.cfg.getProperty(&quot;buttons&quot;),
                nButtons,
                oButton,
                oElement,
                i;

            if (aButtons &amp;&amp; Lang.isArray(aButtons)) {
                nButtons = aButtons.length;
                if (nButtons &gt; 0) {
                    i = (nButtons - 1);
                    do {
                        oButton = aButtons[i];
                        if (oButton) {
                            oElement = this._getButton(oButton.htmlButton);
                            if (oElement) {
                                /*
                                    Place the call to the &quot;blur&quot; method inside
                                    a try/catch block to prevent IE from
                                    throwing JavaScript errors if the element
                                    is disabled or hidden.
                                */
                                try {
                                    oElement.blur();
                                } catch(oException) {
                                    // ignore
                                }
                            }
                        }
                    } while(i--);
                }
            }
        },

        /**
        * Sets the focus to the first button created via the &quot;buttons&quot;
        * configuration property.
        * @method focusFirstButton
        * @return {Boolean} true, if focused. false if not
        */
        focusFirstButton: function () {

            var aButtons = this.cfg.getProperty(&quot;buttons&quot;),
                oButton,
                oElement,
                focused = false;

            if (aButtons &amp;&amp; Lang.isArray(aButtons)) {
                oButton = aButtons[0];
                if (oButton) {
                    oElement = this._getButton(oButton.htmlButton);
                    if (oElement) {
                        /*
                            Place the call to the &quot;focus&quot; method inside a
                            try/catch block to prevent IE from throwing
                            JavaScript errors if the element is disabled
                            or hidden.
                        */
                        try {
                            oElement.focus();
                            focused = true;
                        } catch(oException) {
                            // ignore
                        }
                    }
                }
            }

            return focused;
        },

        /**
        * Sets the focus to the last button created via the &quot;buttons&quot;
        * configuration property.
        * @method focusLastButton
        * @return {Boolean} true, if focused. false if not
        */
        focusLastButton: function () {

            var aButtons = this.cfg.getProperty(&quot;buttons&quot;),
                nButtons,
                oButton,
                oElement,
                focused = false;

            if (aButtons &amp;&amp; Lang.isArray(aButtons)) {
                nButtons = aButtons.length;
                if (nButtons &gt; 0) {
                    oButton = aButtons[(nButtons - 1)];

                    if (oButton) {
                        oElement = this._getButton(oButton.htmlButton);
                        if (oElement) {
                            /*
                                Place the call to the &quot;focus&quot; method inside a
                                try/catch block to prevent IE from throwing
                                JavaScript errors if the element is disabled
                                or hidden.
                            */

                            try {
                                oElement.focus();
                                focused = true;
                            } catch(oException) {
                                // Ignore
                            }
                        }
                    }
                }
            }

            return focused;
        },

        /**
        * The default event handler for the &quot;postmethod&quot; configuration property
        * @method configPostMethod
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For
        * configuration handlers, args[0] will equal the newly applied value
        * for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configPostMethod: function (type, args, obj) {
            this.registerForm();
        },

        // END BUILT-IN PROPERTY EVENT HANDLERS //

        /**
        * Built-in function hook for writing a validation function that will
        * be checked for a &quot;true&quot; value prior to a submit. This function, as
        * implemented by default, always returns true, so it should be
        * overridden if validation is necessary.
        * @method validate
        */
        validate: function () {
            return true;
        },

        /**
        * Executes a submit of the Dialog if validation
        * is successful. By default the Dialog is hidden
        * after submission, but you can set the &quot;hideaftersubmit&quot;
        * configuration property to false, to prevent the Dialog
        * from being hidden.
        *
        * @method submit
        */
        submit: function () {
            if (this.validate()) {
                if (this.beforeSubmitEvent.fire()) {
                    this.doSubmit();
                    this.submitEvent.fire();

                    if (this.cfg.getProperty(&quot;hideaftersubmit&quot;)) {
                        this.hide();
                    }

                    return true;
                } else {
                    return false;
                }
            } else {
                return false;
            }
        },

        /**
        * Executes the cancel of the Dialog followed by a hide.
        * @method cancel
        */
        cancel: function () {
            this.cancelEvent.fire();
            this.hide();
        },

        /**
        * Returns a JSON-compatible data structure representing the data
        * currently contained in the form.
        * @method getData
        * @return {Object} A JSON object reprsenting the data of the
        * current form.
        */
        getData: function () {

            var oForm = this.form,
                aElements,
                nTotalElements,
                oData,
                sName,
                oElement,
                nElements,
                sType,
                sTagName,
                aOptions,
                nOptions,
                aValues,
                oOption,
                oRadio,
                oCheckbox,
                valueAttr,
                i,
                n;

            function isFormElement(p_oElement) {
                var sTag = p_oElement.tagName.toUpperCase();
                return ((sTag == &quot;INPUT&quot; || sTag == &quot;TEXTAREA&quot; ||
                        sTag == &quot;SELECT&quot;) &amp;&amp; p_oElement.name == sName);
            }

            if (oForm) {

                aElements = oForm.elements;
                nTotalElements = aElements.length;
                oData = {};

                for (i = 0; i &lt; nTotalElements; i++) {
                    sName = aElements[i].name;

                    /*
                        Using &quot;Dom.getElementsBy&quot; to safeguard user from JS
                        errors that result from giving a form field (or set of
                        fields) the same name as a native method of a form
                        (like &quot;submit&quot;) or a DOM collection (such as the &quot;item&quot;
                        method). Originally tried accessing fields via the
                        &quot;namedItem&quot; method of the &quot;element&quot; collection, but
                        discovered that it won't return a collection of fields
                        in Gecko.
                    */

                    oElement = Dom.getElementsBy(isFormElement, &quot;*&quot;, oForm);
                    nElements = oElement.length;

                    if (nElements &gt; 0) {
                        if (nElements == 1) {
                            oElement = oElement[0];

                            sType = oElement.type;
                            sTagName = oElement.tagName.toUpperCase();

                            switch (sTagName) {
                                case &quot;INPUT&quot;:
                                    if (sType == &quot;checkbox&quot;) {
                                        oData[sName] = oElement.checked;
                                    } else if (sType != &quot;radio&quot;) {
                                        oData[sName] = oElement.value;
                                    }
                                    break;

                                case &quot;TEXTAREA&quot;:
                                    oData[sName] = oElement.value;
                                    break;

                                case &quot;SELECT&quot;:
                                    aOptions = oElement.options;
                                    nOptions = aOptions.length;
                                    aValues = [];

                                    for (n = 0; n &lt; nOptions; n++) {
                                        oOption = aOptions[n];
                                        if (oOption.selected) {
                                            valueAttr = oOption.attributes.value;
                                            aValues[aValues.length] = (valueAttr &amp;&amp; valueAttr.specified) ? oOption.value : oOption.text;
                                        }
                                    }
                                    oData[sName] = aValues;
                                    break;
                            }

                        } else {
                            sType = oElement[0].type;
                            switch (sType) {
                                case &quot;radio&quot;:
                                    for (n = 0; n &lt; nElements; n++) {
                                        oRadio = oElement[n];
                                        if (oRadio.checked) {
                                            oData[sName] = oRadio.value;
                                            break;
                                        }
                                    }
                                    break;

                                case &quot;checkbox&quot;:
                                    aValues = [];
                                    for (n = 0; n &lt; nElements; n++) {
                                        oCheckbox = oElement[n];
                                        if (oCheckbox.checked) {
                                            aValues[aValues.length] =  oCheckbox.value;
                                        }
                                    }
                                    oData[sName] = aValues;
                                    break;
                            }
                        }
                    }
                }
            }

            return oData;
        },

        /**
        * Removes the Panel element from the DOM and sets all child elements
        * to null.
        * @method destroy
        * @param {boolean} shallowPurge If true, only the parent element's DOM event listeners are purged. If false, or not provided, all children are also purged of DOM event listeners.
        * NOTE: The flag is a &quot;shallowPurge&quot; flag, as opposed to what may be a more intuitive &quot;purgeChildren&quot; flag to maintain backwards compatibility with behavior prior to 2.9.0.
        */
        destroy: function (shallowPurge) {
            removeButtonEventHandlers.call(this);

            this._aButtons = null;

            var aForms = this.element.getElementsByTagName(&quot;form&quot;),
                oForm;

            if (aForms.length &gt; 0) {
                oForm = aForms[0];

                if (oForm) {
                    Event.purgeElement(oForm);
                    if (oForm.parentNode) {
                        oForm.parentNode.removeChild(oForm);
                    }
                    this.form = null;
                }
            }
            Dialog.superclass.destroy.call(this, shallowPurge);
        },

        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} The string representation of the Dialog
        */
        toString: function () {
            return &quot;Dialog &quot; + this.id;
        }

    });

}());
(function () {

    /**
    * SimpleDialog is a simple implementation of Dialog that can be used to
    * submit a single value. Forms can be processed in 3 ways -- via an
    * asynchronous Connection utility call, a simple form POST or GET,
    * or manually.
    * @namespace YAHOO.widget
    * @class SimpleDialog
    * @extends YAHOO.widget.Dialog
    * @constructor
    * @param {String} el The element ID representing the SimpleDialog
    * &lt;em&gt;OR&lt;/em&gt;
    * @param {HTMLElement} el The element representing the SimpleDialog
    * @param {Object} userConfig The configuration object literal containing
    * the configuration that should be set for this SimpleDialog. See
    * configuration documentation for more details.
    */
    YAHOO.widget.SimpleDialog = function (el, userConfig) {

        YAHOO.widget.SimpleDialog.superclass.constructor.call(this,
            el, userConfig);

    };

    var Dom = YAHOO.util.Dom,
        SimpleDialog = YAHOO.widget.SimpleDialog,

        /**
        * Constant representing the SimpleDialog's configuration properties
        * @property DEFAULT_CONFIG
        * @private
        * @final
        * @type Object
        */
        DEFAULT_CONFIG = {

            &quot;ICON&quot;: {
                key: &quot;icon&quot;,
                value: &quot;none&quot;,
                suppressEvent: true
            },

            &quot;TEXT&quot;: {
                key: &quot;text&quot;,
                value: &quot;&quot;,
                suppressEvent: true,
                supercedes: [&quot;icon&quot;]
            }

        };

    /**
    * Constant for the standard network icon for a blocking action
    * @property YAHOO.widget.SimpleDialog.ICON_BLOCK
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_BLOCK = &quot;blckicon&quot;;

    /**
    * Constant for the standard network icon for alarm
    * @property YAHOO.widget.SimpleDialog.ICON_ALARM
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_ALARM = &quot;alrticon&quot;;

    /**
    * Constant for the standard network icon for help
    * @property YAHOO.widget.SimpleDialog.ICON_HELP
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_HELP  = &quot;hlpicon&quot;;

    /**
    * Constant for the standard network icon for info
    * @property YAHOO.widget.SimpleDialog.ICON_INFO
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_INFO  = &quot;infoicon&quot;;

    /**
    * Constant for the standard network icon for warn
    * @property YAHOO.widget.SimpleDialog.ICON_WARN
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_WARN  = &quot;warnicon&quot;;

    /**
    * Constant for the standard network icon for a tip
    * @property YAHOO.widget.SimpleDialog.ICON_TIP
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_TIP   = &quot;tipicon&quot;;

    /**
    * Constant representing the name of the CSS class applied to the element
    * created by the &quot;icon&quot; configuration property.
    * @property YAHOO.widget.SimpleDialog.ICON_CSS_CLASSNAME
    * @static
    * @final
    * @type String
    */
    SimpleDialog.ICON_CSS_CLASSNAME = &quot;yui-icon&quot;;

    /**
    * Constant representing the default CSS class used for a SimpleDialog
    * @property YAHOO.widget.SimpleDialog.CSS_SIMPLEDIALOG
    * @static
    * @final
    * @type String
    */
    SimpleDialog.CSS_SIMPLEDIALOG = &quot;yui-simple-dialog&quot;;


    YAHOO.extend(SimpleDialog, YAHOO.widget.Dialog, {

        /**
        * Initializes the class's configurable properties which can be changed
        * using the SimpleDialog's Config object (cfg).
        * @method initDefaultConfig
        */
        initDefaultConfig: function () {

            SimpleDialog.superclass.initDefaultConfig.call(this);

            // Add dialog config properties //

            /**
            * Sets the informational icon for the SimpleDialog
            * @config icon
            * @type String
            * @default &quot;none&quot;
            */
            this.cfg.addProperty(DEFAULT_CONFIG.ICON.key, {
                handler: this.configIcon,
                value: DEFAULT_CONFIG.ICON.value,
                suppressEvent: DEFAULT_CONFIG.ICON.suppressEvent
            });

            /**
            * Sets the text for the SimpleDialog. The text is inserted into the DOM as HTML, and should be escaped by the implementor if coming from an external source.
            * @config text
            * @type HTML
            * @default &quot;&quot;
            */
            this.cfg.addProperty(DEFAULT_CONFIG.TEXT.key, {
                handler: this.configText,
                value: DEFAULT_CONFIG.TEXT.value,
                suppressEvent: DEFAULT_CONFIG.TEXT.suppressEvent,
                supercedes: DEFAULT_CONFIG.TEXT.supercedes
            });

        },


        /**
        * The SimpleDialog initialization method, which is executed for
        * SimpleDialog and all of its subclasses. This method is automatically
        * called by the constructor, and  sets up all DOM references for
        * pre-existing markup, and creates required markup if it is not
        * already present.
        * @method init
        * @param {String} el The element ID representing the SimpleDialog
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} el The element representing the SimpleDialog
        * @param {Object} userConfig The configuration object literal
        * containing the configuration that should be set for this
        * SimpleDialog. See configuration documentation for more details.
        */
        init: function (el, userConfig) {

            /*
                Note that we don't pass the user config in here yet because we
                only want it executed once, at the lowest subclass level
            */

            SimpleDialog.superclass.init.call(this, el/*, userConfig*/);

            this.beforeInitEvent.fire(SimpleDialog);

            Dom.addClass(this.element, SimpleDialog.CSS_SIMPLEDIALOG);

            this.cfg.queueProperty(&quot;postmethod&quot;, &quot;manual&quot;);

            if (userConfig) {
                this.cfg.applyConfig(userConfig, true);
            }

            this.beforeRenderEvent.subscribe(function () {
                if (! this.body) {
                    this.setBody(&quot;&quot;);
                }
            }, this, true);

            this.initEvent.fire(SimpleDialog);

        },

        /**
        * Prepares the SimpleDialog's internal FORM object, creating one if one
        * is not currently present, and adding the value hidden field.
        * @method registerForm
        */
        registerForm: function () {
            SimpleDialog.superclass.registerForm.call(this);

            var doc = this.form.ownerDocument,
                input = doc.createElement(&quot;input&quot;);

            input.type = &quot;hidden&quot;;
            input.name = this.id;
            input.value = &quot;&quot;;

            this.form.appendChild(input);
        },

        // BEGIN BUILT-IN PROPERTY EVENT HANDLERS //

        /**
        * Fired when the &quot;icon&quot; property is set.
        * @method configIcon
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configIcon: function (type,args,obj) {

            var sIcon = args[0],
                oBody = this.body,
                sCSSClass = SimpleDialog.ICON_CSS_CLASSNAME,
				aElements,
                oIcon,
                oIconParent;

            if (sIcon &amp;&amp; sIcon != &quot;none&quot;) {

                aElements = Dom.getElementsByClassName(sCSSClass, &quot;*&quot; , oBody);

				if (aElements.length === 1) {

					oIcon = aElements[0];
                    oIconParent = oIcon.parentNode;

                    if (oIconParent) {

                        oIconParent.removeChild(oIcon);

                        oIcon = null;

                    }

				}


                if (sIcon.indexOf(&quot;.&quot;) == -1) {

                    oIcon = document.createElement(&quot;span&quot;);
                    oIcon.className = (sCSSClass + &quot; &quot; + sIcon);
                    oIcon.innerHTML = &quot;&amp;#160;&quot;;

                } else {

                    oIcon = document.createElement(&quot;img&quot;);
                    oIcon.src = (this.imageRoot + sIcon);
                    oIcon.className = sCSSClass;

                }


                if (oIcon) {

                    oBody.insertBefore(oIcon, oBody.firstChild);

                }

            }

        },

        /**
        * Fired when the &quot;text&quot; property is set.
        * @method configText
        * @param {String} type The CustomEvent type (usually the property name)
        * @param {Object[]} args The CustomEvent arguments. For configuration
        * handlers, args[0] will equal the newly applied value for the property.
        * @param {Object} obj The scope object. For configuration handlers,
        * this will usually equal the owner.
        */
        configText: function (type,args,obj) {
            var text = args[0];
            if (text) {
                this.setBody(text);
                this.cfg.refireEvent(&quot;icon&quot;);
            }
        },

        // END BUILT-IN PROPERTY EVENT HANDLERS //

        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} The string representation of the SimpleDialog
        */
        toString: function () {
            return &quot;SimpleDialog &quot; + this.id;
        }

        /**
        * &lt;p&gt;
        * Sets the SimpleDialog's body content to the HTML specified.
        * If no body is present, one will be automatically created.
        * An empty string can be passed to the method to clear the contents of the body.
        * &lt;/p&gt;
        * &lt;p&gt;&lt;strong&gt;NOTE:&lt;/strong&gt; SimpleDialog provides the &lt;a href=&quot;#config_text&quot;&gt;text&lt;/a&gt;
        * and &lt;a href=&quot;#config_icon&quot;&gt;icon&lt;/a&gt; configuration properties to set the contents
        * of it's body element in accordance with the UI design for a SimpleDialog (an
        * icon and message text). Calling setBody on the SimpleDialog will not enforce this
        * UI design constraint and will replace the entire contents of the SimpleDialog body.
        * It should only be used if you wish the replace the default icon/text body structure
        * of a SimpleDialog with your own custom markup.&lt;/p&gt;
        *
        * @method setBody
        * @param {HTML} bodyContent The HTML used to set the body.
        * As a convenience, non HTMLElement objects can also be passed into
        * the method, and will be treated as strings, with the body innerHTML
        * set to their default toString implementations.
        *
        * &lt;p&gt;NOTE: Markup passed into this method is added to the DOM as HTML, and should be escaped by the implementor if coming from an external source.&lt;/p&gt;
        *
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {HTMLElement} bodyContent The HTMLElement to add as the first and only child of the body element.
        * &lt;em&gt;OR&lt;/em&gt;
        * @param {DocumentFragment} bodyContent The document fragment
        * containing elements which are to be added to the body
        */
    });

}());
(function () {

    /**
    * ContainerEffect encapsulates animation transitions that are executed when
    * an Overlay is shown or hidden.
    * @namespace YAHOO.widget
    * @class ContainerEffect
    * @constructor
    * @param {YAHOO.widget.Overlay} overlay The Overlay that the animation
    * should be associated with
    * @param {Object} attrIn The object literal representing the animation
    * arguments to be used for the animate-in transition. The arguments for
    * this literal are: attributes(object, see YAHOO.util.Anim for description),
    * duration(Number), and method(i.e. Easing.easeIn).
    * @param {Object} attrOut The object literal representing the animation
    * arguments to be used for the animate-out transition. The arguments for
    * this literal are: attributes(object, see YAHOO.util.Anim for description),
    * duration(Number), and method(i.e. Easing.easeIn).
    * @param {HTMLElement} targetElement Optional. The target element that
    * should be animated during the transition. Defaults to overlay.element.
    * @param {class} Optional. The animation class to instantiate. Defaults to
    * YAHOO.util.Anim. Other options include YAHOO.util.Motion.
    */
    YAHOO.widget.ContainerEffect = function (overlay, attrIn, attrOut, targetElement, animClass) {

        if (!animClass) {
            animClass = YAHOO.util.Anim;
        }

        /**
        * The overlay to animate
        * @property overlay
        * @type YAHOO.widget.Overlay
        */
        this.overlay = overlay;

        /**
        * The animation attributes to use when transitioning into view
        * @property attrIn
        * @type Object
        */
        this.attrIn = attrIn;

        /**
        * The animation attributes to use when transitioning out of view
        * @property attrOut
        * @type Object
        */
        this.attrOut = attrOut;

        /**
        * The target element to be animated
        * @property targetElement
        * @type HTMLElement
        */
        this.targetElement = targetElement || overlay.element;

        /**
        * The animation class to use for animating the overlay
        * @property animClass
        * @type class
        */
        this.animClass = animClass;
    };

    var Dom = YAHOO.util.Dom,
        CustomEvent = YAHOO.util.CustomEvent,
        ContainerEffect = YAHOO.widget.ContainerEffect;

    /**
    * A pre-configured ContainerEffect instance that can be used for fading
    * an overlay in and out.
    * @method FADE
    * @static
    * @param {YAHOO.widget.Overlay} overlay The Overlay object to animate
    * @param {Number} dur The duration of the animation
    * @return {YAHOO.widget.ContainerEffect} The configured ContainerEffect object
    */
    ContainerEffect.FADE = function (overlay, dur) {

        var Easing = YAHOO.util.Easing,
            fin = {
                attributes: {opacity:{from:0, to:1}},
                duration: dur,
                method: Easing.easeIn
            },
            fout = {
                attributes: {opacity:{to:0}},
                duration: dur,
                method: Easing.easeOut
            },
            fade = new ContainerEffect(overlay, fin, fout, overlay.element);

        fade.handleUnderlayStart = function() {
            var underlay = this.overlay.underlay;
            if (underlay &amp;&amp; YAHOO.env.ua.ie) {
                var hasFilters = (underlay.filters &amp;&amp; underlay.filters.length &gt; 0);
                if(hasFilters) {
                    Dom.addClass(overlay.element, &quot;yui-effect-fade&quot;);
                }
            }
        };

        fade.handleUnderlayComplete = function() {
            var underlay = this.overlay.underlay;
            if (underlay &amp;&amp; YAHOO.env.ua.ie) {
                Dom.removeClass(overlay.element, &quot;yui-effect-fade&quot;);
            }
        };

        fade.handleStartAnimateIn = function (type, args, obj) {
            obj.overlay._fadingIn = true;

            Dom.addClass(obj.overlay.element, &quot;hide-select&quot;);

            if (!obj.overlay.underlay) {
                obj.overlay.cfg.refireEvent(&quot;underlay&quot;);
            }

            obj.handleUnderlayStart();

            obj.overlay._setDomVisibility(true);
            Dom.setStyle(obj.overlay.element, &quot;opacity&quot;, 0);
        };

        fade.handleCompleteAnimateIn = function (type,args,obj) {
            obj.overlay._fadingIn = false;

            Dom.removeClass(obj.overlay.element, &quot;hide-select&quot;);

            if (obj.overlay.element &amp;&amp; obj.overlay.element.style.filter) {
                obj.overlay.element.style.filter = null;
            }

            obj.handleUnderlayComplete();

            if (obj.overlay.cfg) {
                obj.overlay.cfg.refireEvent(&quot;iframe&quot;);
            }
            obj.animateInCompleteEvent.fire();
        };

        fade.handleStartAnimateOut = function (type, args, obj) {
            obj.overlay._fadingOut = true;
            Dom.addClass(obj.overlay.element, &quot;hide-select&quot;);
            obj.handleUnderlayStart();
        };

        fade.handleCompleteAnimateOut =  function (type, args, obj) {
            obj.overlay._fadingOut = false;
            Dom.removeClass(obj.overlay.element, &quot;hide-select&quot;);

            if (obj.overlay.element &amp;&amp; obj.overlay.element.style.filter) {
                obj.overlay.element.style.filter = null;
            }
            obj.overlay._setDomVisibility(false);
            Dom.setStyle(obj.overlay.element, &quot;opacity&quot;, 1);

            obj.handleUnderlayComplete();

            if (obj.overlay.cfg) {
                obj.overlay.cfg.refireEvent(&quot;iframe&quot;);
            }
            obj.animateOutCompleteEvent.fire();
        };

        fade.init();
        return fade;
    };


    /**
    * A pre-configured ContainerEffect instance that can be used for sliding an
    * overlay in and out.
    * @method SLIDE
    * @static
    * @param {YAHOO.widget.Overlay} overlay The Overlay object to animate
    * @param {Number} dur The duration of the animation
    * @return {YAHOO.widget.ContainerEffect} The configured ContainerEffect object
    */
    ContainerEffect.SLIDE = function (overlay, dur) {
        var Easing = YAHOO.util.Easing,

            x = overlay.cfg.getProperty(&quot;x&quot;) || Dom.getX(overlay.element),
            y = overlay.cfg.getProperty(&quot;y&quot;) || Dom.getY(overlay.element),
            clientWidth = Dom.getClientWidth(),
            offsetWidth = overlay.element.offsetWidth,

            sin =  {
                attributes: { points: { to: [x, y] } },
                duration: dur,
                method: Easing.easeIn
            },

            sout = {
                attributes: { points: { to: [(clientWidth + 25), y] } },
                duration: dur,
                method: Easing.easeOut
            },

            slide = new ContainerEffect(overlay, sin, sout, overlay.element, YAHOO.util.Motion);

        slide.handleStartAnimateIn = function (type,args,obj) {
            obj.overlay.element.style.left = ((-25) - offsetWidth) + &quot;px&quot;;
            obj.overlay.element.style.top  = y + &quot;px&quot;;
        };

        slide.handleTweenAnimateIn = function (type, args, obj) {

            var pos = Dom.getXY(obj.overlay.element),
                currentX = pos[0],
                currentY = pos[1];

            if (Dom.getStyle(obj.overlay.element, &quot;visibility&quot;) ==
                &quot;hidden&quot; &amp;&amp; currentX &lt; x) {

                obj.overlay._setDomVisibility(true);

            }

            obj.overlay.cfg.setProperty(&quot;xy&quot;, [currentX, currentY], true);
            obj.overlay.cfg.refireEvent(&quot;iframe&quot;);
        };

        slide.handleCompleteAnimateIn = function (type, args, obj) {
            obj.overlay.cfg.setProperty(&quot;xy&quot;, [x, y], true);
            obj.startX = x;
            obj.startY = y;
            obj.overlay.cfg.refireEvent(&quot;iframe&quot;);
            obj.animateInCompleteEvent.fire();
        };

        slide.handleStartAnimateOut = function (type, args, obj) {

            var vw = Dom.getViewportWidth(),
                pos = Dom.getXY(obj.overlay.element),
                yso = pos[1];

            obj.animOut.attributes.points.to = [(vw + 25), yso];
        };

        slide.handleTweenAnimateOut = function (type, args, obj) {

            var pos = Dom.getXY(obj.overlay.element),
                xto = pos[0],
                yto = pos[1];

            obj.overlay.cfg.setProperty(&quot;xy&quot;, [xto, yto], true);
            obj.overlay.cfg.refireEvent(&quot;iframe&quot;);
        };

        slide.handleCompleteAnimateOut = function (type, args, obj) {
            obj.overlay._setDomVisibility(false);

            obj.overlay.cfg.setProperty(&quot;xy&quot;, [x, y]);
            obj.animateOutCompleteEvent.fire();
        };

        slide.init();
        return slide;
    };

    ContainerEffect.prototype = {

        /**
        * Initializes the animation classes and events.
        * @method init
        */
        init: function () {

            this.beforeAnimateInEvent = this.createEvent(&quot;beforeAnimateIn&quot;);
            this.beforeAnimateInEvent.signature = CustomEvent.LIST;

            this.beforeAnimateOutEvent = this.createEvent(&quot;beforeAnimateOut&quot;);
            this.beforeAnimateOutEvent.signature = CustomEvent.LIST;

            this.animateInCompleteEvent = this.createEvent(&quot;animateInComplete&quot;);
            this.animateInCompleteEvent.signature = CustomEvent.LIST;

            this.animateOutCompleteEvent = this.createEvent(&quot;animateOutComplete&quot;);
            this.animateOutCompleteEvent.signature = CustomEvent.LIST;

            this.animIn = new this.animClass(
                this.targetElement,
                this.attrIn.attributes,
                this.attrIn.duration,
                this.attrIn.method);

            this.animIn.onStart.subscribe(this.handleStartAnimateIn, this);
            this.animIn.onTween.subscribe(this.handleTweenAnimateIn, this);
            this.animIn.onComplete.subscribe(this.handleCompleteAnimateIn,this);

            this.animOut = new this.animClass(
                this.targetElement,
                this.attrOut.attributes,
                this.attrOut.duration,
                this.attrOut.method);

            this.animOut.onStart.subscribe(this.handleStartAnimateOut, this);
            this.animOut.onTween.subscribe(this.handleTweenAnimateOut, this);
            this.animOut.onComplete.subscribe(this.handleCompleteAnimateOut, this);

        },

        /**
        * Triggers the in-animation.
        * @method animateIn
        */
        animateIn: function () {
            this._stopAnims(this.lastFrameOnStop);
            this.beforeAnimateInEvent.fire();
            this.animIn.animate();
        },

        /**
        * Triggers the out-animation.
        * @method animateOut
        */
        animateOut: function () {
            this._stopAnims(this.lastFrameOnStop);
            this.beforeAnimateOutEvent.fire();
            this.animOut.animate();
        },

        /**
         * Flag to define whether Anim should jump to the last frame,
         * when animateIn or animateOut is stopped.
         *
         * @property lastFrameOnStop
         * @default true
         * @type boolean
         */
        lastFrameOnStop : true,

        /**
         * Stops both animIn and animOut instances, if in progress.
         *
         * @method _stopAnims
         * @param {boolean} finish If true, animation will jump to final frame.
         * @protected
         */
        _stopAnims : function(finish) {
            if (this.animOut &amp;&amp; this.animOut.isAnimated()) {
                this.animOut.stop(finish);
            }

            if (this.animIn &amp;&amp; this.animIn.isAnimated()) {
                this.animIn.stop(finish);
            }
        },

        /**
        * The default onStart handler for the in-animation.
        * @method handleStartAnimateIn
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleStartAnimateIn: function (type, args, obj) { },

        /**
        * The default onTween handler for the in-animation.
        * @method handleTweenAnimateIn
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleTweenAnimateIn: function (type, args, obj) { },

        /**
        * The default onComplete handler for the in-animation.
        * @method handleCompleteAnimateIn
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleCompleteAnimateIn: function (type, args, obj) { },

        /**
        * The default onStart handler for the out-animation.
        * @method handleStartAnimateOut
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleStartAnimateOut: function (type, args, obj) { },

        /**
        * The default onTween handler for the out-animation.
        * @method handleTweenAnimateOut
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleTweenAnimateOut: function (type, args, obj) { },

        /**
        * The default onComplete handler for the out-animation.
        * @method handleCompleteAnimateOut
        * @param {String} type The CustomEvent type
        * @param {Object[]} args The CustomEvent arguments
        * @param {Object} obj The scope object
        */
        handleCompleteAnimateOut: function (type, args, obj) { },

        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} The string representation of the ContainerEffect
        */
        toString: function () {
            var output = &quot;ContainerEffect&quot;;
            if (this.overlay) {
                output += &quot; [&quot; + this.overlay.toString() + &quot;]&quot;;
            }
            return output;
        }
    };

    YAHOO.lang.augmentProto(ContainerEffect, YAHOO.util.EventProvider);

})();
YAHOO.register(&quot;container&quot;, YAHOO.widget.Module, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
var Y = YAHOO,
    Y_DOM = YAHOO.util.Dom, 
    EMPTY_ARRAY = [],
    Y_UA = Y.env.ua,
    Y_Lang = Y.lang,
    Y_DOC = document,
    Y_DOCUMENT_ELEMENT = Y_DOC.documentElement,

    Y_DOM_inDoc = Y_DOM.inDocument, 
    Y_mix = Y_Lang.augmentObject,
    Y_guid = Y_DOM.generateId,

    Y_getDoc = function(element) {
        var doc = Y_DOC;
        if (element) {
            doc = (element.nodeType === 9) ? element : // element === document
                element.ownerDocument || // element === DOM node
                element.document || // element === window
                Y_DOC; // default
        }

        return doc;
    },
    
    Y_Array = function(o, startIdx) {
        var l, a, start = startIdx || 0;

        // IE errors when trying to slice HTMLElement collections
        try {
            return Array.prototype.slice.call(o, start);
        } catch (e) {
            a = [];
            l = o.length;
            for (; start &lt; l; start++) {
                a.push(o[start]);
            }
            return a;
        }
    },

    Y_DOM_allById = function(id, root) {
        root = root || Y_DOC;
        var nodes = [],
            ret = [],
            i,
            node;

        if (root.querySelectorAll) {
            ret = root.querySelectorAll('[id=&quot;' + id + '&quot;]');
        } else if (root.all) {
            nodes = root.all(id);

            if (nodes) {
                // root.all may return HTMLElement or HTMLCollection.
                // some elements are also HTMLCollection (FORM, SELECT).
                if (nodes.nodeName) {
                    if (nodes.id === id) { // avoid false positive on name
                        ret.push(nodes);
                        nodes = EMPTY_ARRAY; // done, no need to filter
                    } else { //  prep for filtering
                        nodes = [nodes];
                    }
                }

                if (nodes.length) {
                    // filter out matches on node.name
                    // and element.id as reference to element with id === 'id'
                    for (i = 0; node = nodes[i++];) {
                        if (node.id === id  || 
                                (node.attributes &amp;&amp; node.attributes.id &amp;&amp;
                                node.attributes.id.value === id)) { 
                            ret.push(node);
                        }
                    }
                }
            }
        } else {
            ret = [Y_getDoc(root).getElementById(id)];
        }

        return ret;
    };

/**
 * The selector-native module provides support for native querySelector
 * @module dom
 * @submodule selector-native
 * @for Selector
 */

/**
 * Provides support for using CSS selectors to query the DOM 
 * @class Selector 
 * @static
 * @for Selector
 */

var COMPARE_DOCUMENT_POSITION = 'compareDocumentPosition',
    OWNER_DOCUMENT = 'ownerDocument',

Selector = {
    _foundCache: [],

    useNative: true,

    _compare: ('sourceIndex' in Y_DOCUMENT_ELEMENT) ?
        function(nodeA, nodeB) {
            var a = nodeA.sourceIndex,
                b = nodeB.sourceIndex;

            if (a === b) {
                return 0;
            } else if (a &gt; b) {
                return 1;
            }

            return -1;

        } : (Y_DOCUMENT_ELEMENT[COMPARE_DOCUMENT_POSITION] ?
        function(nodeA, nodeB) {
            if (nodeA[COMPARE_DOCUMENT_POSITION](nodeB) &amp; 4) {
                return -1;
            } else {
                return 1;
            }
        } :
        function(nodeA, nodeB) {
            var rangeA, rangeB, compare;
            if (nodeA &amp;&amp; nodeB) {
                rangeA = nodeA[OWNER_DOCUMENT].createRange();
                rangeA.setStart(nodeA, 0);
                rangeB = nodeB[OWNER_DOCUMENT].createRange();
                rangeB.setStart(nodeB, 0);
                compare = rangeA.compareBoundaryPoints(1, rangeB); // 1 === Range.START_TO_END
            }

            return compare;
        
    }),

    _sort: function(nodes) {
        if (nodes) {
            nodes = Y_Array(nodes, 0, true);
            if (nodes.sort) {
                nodes.sort(Selector._compare);
            }
        }

        return nodes;
    },

    _deDupe: function(nodes) {
        var ret = [],
            i, node;

        for (i = 0; (node = nodes[i++]);) {
            if (!node._found) {
                ret[ret.length] = node;
                node._found = true;
            }
        }

        for (i = 0; (node = ret[i++]);) {
            node._found = null;
            node.removeAttribute('_found');
        }

        return ret;
    },

    /**
     * Retrieves a set of nodes based on a given CSS selector. 
     * @method query
     *
     * @param {string} selector The CSS Selector to test the node against.
     * @param {HTMLElement} root optional An HTMLElement to start the query from. Defaults to Y.config.doc
     * @param {Boolean} firstOnly optional Whether or not to return only the first match.
     * @return {Array} An array of nodes that match the given selector.
     * @static
     */
    query: function(selector, root, firstOnly, skipNative) {
        if (root &amp;&amp; typeof root == 'string') {
            root = Y_DOM.get(root);
            if (!root) {
                return (firstOnly) ? null : [];
            }
        } else {
            root = root || Y_DOC;
        }

        var ret = [],
            useNative = (Selector.useNative &amp;&amp; Y_DOC.querySelector &amp;&amp; !skipNative),
            queries = [[selector, root]],
            query,
            result,
            i,
            fn = (useNative) ? Selector._nativeQuery : Selector._bruteQuery;

        if (selector &amp;&amp; fn) {
            // split group into seperate queries
            if (!skipNative &amp;&amp; // already done if skipping
                    (!useNative || root.tagName)) { // split native when element scoping is needed
                queries = Selector._splitQueries(selector, root);
            }

            for (i = 0; (query = queries[i++]);) {
                result = fn(query[0], query[1], firstOnly);
                if (!firstOnly) { // coerce DOM Collection to Array
                    result = Y_Array(result, 0, true);
                }
                if (result) {
                    ret = ret.concat(result);
                }
            }

            if (queries.length &gt; 1) { // remove dupes and sort by doc order 
                ret = Selector._sort(Selector._deDupe(ret));
            }
        }

        YAHOO.log('query: ' + selector + ' returning: ' + ret.length, 'info', 'Selector');
        return (firstOnly) ? (ret[0] || null) : ret;

    },

    // allows element scoped queries to begin with combinator
    // e.g. query('&gt; p', document.body) === query('body &gt; p')
    _splitQueries: function(selector, node) {
        var groups = selector.split(','),
            queries = [],
            prefix = '',
            i, len;

        if (node) {
            // enforce for element scoping
            if (node.tagName) {
                node.id = node.id || Y_guid();
                prefix = '[id=&quot;' + node.id + '&quot;] ';
            }

            for (i = 0, len = groups.length; i &lt; len; ++i) {
                selector =  prefix + groups[i];
                queries.push([selector, node]);
            }
        }

        return queries;
    },

    _nativeQuery: function(selector, root, one) {
        if (Y_UA.webkit &amp;&amp; selector.indexOf(':checked') &gt; -1 &amp;&amp;
                (Selector.pseudos &amp;&amp; Selector.pseudos.checked)) { // webkit (chrome, safari) fails to find &quot;selected&quot;
            return Selector.query(selector, root, one, true); // redo with skipNative true to try brute query
        }
        try {
            //YAHOO.log('trying native query with: ' + selector, 'info', 'selector-native');
            return root['querySelector' + (one ? '' : 'All')](selector);
        } catch(e) { // fallback to brute if available
            //YAHOO.log('native query error; reverting to brute query with: ' + selector, 'info', 'selector-native');
            return Selector.query(selector, root, one, true); // redo with skipNative true
        }
    },

    filter: function(nodes, selector) {
        var ret = [],
            i, node;

        if (nodes &amp;&amp; selector) {
            for (i = 0; (node = nodes[i++]);) {
                if (Selector.test(node, selector)) {
                    ret[ret.length] = node;
                }
            }
        } else {
            YAHOO.log('invalid filter input (nodes: ' + nodes +
                    ', selector: ' + selector + ')', 'warn', 'Selector');
        }

        return ret;
    },

    test: function(node, selector, root) {
        var ret = false,
            groups = selector.split(','),
            useFrag = false,
            parent,
            item,
            items,
            frag,
            i, j, group;

        if (node &amp;&amp; node.tagName) { // only test HTMLElements

            // we need a root if off-doc
            if (!root &amp;&amp; !Y_DOM_inDoc(node)) {
                parent = node.parentNode;
                if (parent) { 
                    root = parent;
                } else { // only use frag when no parent to query
                    frag = node[OWNER_DOCUMENT].createDocumentFragment();
                    frag.appendChild(node);
                    root = frag;
                    useFrag = true;
                }
            }
            root = root || node[OWNER_DOCUMENT];

            if (!node.id) {
                node.id = Y_guid();
            }
            for (i = 0; (group = groups[i++]);) { // TODO: off-dom test
                group += '[id=&quot;' + node.id + '&quot;]';
                items = Selector.query(group, root);

                for (j = 0; item = items[j++];) {
                    if (item === node) {
                        ret = true;
                        break;
                    }
                }
                if (ret) {
                    break;
                }
            }

            if (useFrag) { // cleanup
                frag.removeChild(node);
            }
        }

        return ret;
    }

};

YAHOO.util.Selector = Selector;
/**
 * The selector module provides helper methods allowing CSS2 Selectors to be used with DOM elements.
 * @module dom
 * @submodule selector-css2
 * @for Selector
 */

/**
 * Provides helper methods for collecting and filtering DOM elements.
 */

var PARENT_NODE = 'parentNode',
    TAG_NAME = 'tagName',
    ATTRIBUTES = 'attributes',
    COMBINATOR = 'combinator',
    PSEUDOS = 'pseudos',

    SelectorCSS2 = {
        _reRegExpTokens: /([\^\$\?\[\]\*\+\-\.\(\)\|\\])/, // TODO: move?
        SORT_RESULTS: true,
        _children: function(node, tag) {
            var ret = node.children,
                i,
                children = [],
                childNodes,
                child;

            if (node.children &amp;&amp; tag &amp;&amp; node.children.tags) {
                children = node.children.tags(tag);
            } else if ((!ret &amp;&amp; node[TAG_NAME]) || (ret &amp;&amp; tag)) { // only HTMLElements have children
                childNodes = ret || node.childNodes;
                ret = [];
                for (i = 0; (child = childNodes[i++]);) {
                    if (child.tagName) {
                        if (!tag || tag === child.tagName) {
                            ret.push(child);
                        }
                    }
                }
            }

            return ret || [];
        },

        _re: {
            //attr: /(\[.*\])/g,
            attr: /(\[[^\]]*\])/g,
            //esc: /\\[:\[][\w\d\]]*/gi,
            esc: /\\[:\[\]\(\)#\.\'\&gt;+~&quot;]/gi,
            //pseudos: /:([\-\w]+(?:\(?:['&quot;]?(.+)['&quot;]?\))*)/i
            pseudos: /(\([^\)]*\))/g
        },

        /**
         * Mapping of shorthand tokens to corresponding attribute selector 
         * @property shorthand
         * @type object
         */
        shorthand: {
            //'\\#([^\\s\\\\(\\[:]*)': '[id=$1]',
            '\\#(-?[_a-z]+[-\\w\\uE000]*)': '[id=$1]',
            //'\\#([^\\s\\\.:\\[\\]]*)': '[id=$1]',
            //'\\.([^\\s\\\\(\\[:]*)': '[className=$1]'
            '\\.(-?[_a-z]+[-\\w\\uE000]*)': '[className~=$1]'
        },

        /**
         * List of operators and corresponding boolean functions. 
         * These functions are passed the attribute and the current node's value of the attribute.
         * @property operators
         * @type object
         */
        operators: {
            '': function(node, attr) { return !!node.getAttribute(attr); }, // Just test for existence of attribute
            //'': '.+',
            //'=': '^{val}$', // equality
            '~=': '(?:^|\\s+){val}(?:\\s+|$)', // space-delimited
            '|=': '^{val}(?:-|$)' // optional hyphen-delimited
        },

        pseudos: {
           'first-child': function(node) { 
                return Selector._children(node[PARENT_NODE])[0] === node; 
            } 
        },

        _bruteQuery: function(selector, root, firstOnly) {
            var ret = [],
                nodes = [],
                tokens = Selector._tokenize(selector),
                token = tokens[tokens.length - 1],
                rootDoc = Y_getDoc(root),
                child,
                id,
                className,
                tagName;


            // if we have an initial ID, set to root when in document
            /*
            if (tokens[0] &amp;&amp; rootDoc === root &amp;&amp;  
                    (id = tokens[0].id) &amp;&amp;
                    rootDoc.getElementById(id)) {
                root = rootDoc.getElementById(id);
            }
            */

            if (token) {
                // prefilter nodes
                id = token.id;
                className = token.className;
                tagName = token.tagName || '*';

                if (root.getElementsByTagName) { // non-IE lacks DOM api on doc frags
                    // try ID first, unless no root.all &amp;&amp; root not in document
                    // (root.all works off document, but not getElementById)
                    // TODO: move to allById?
                    if (id &amp;&amp; (root.all || (root.nodeType === 9 || Y_DOM_inDoc(root)))) {
                        nodes = Y_DOM_allById(id, root);
                    // try className
                    } else if (className) {
                        nodes = root.getElementsByClassName(className);
                    } else { // default to tagName
                        nodes = root.getElementsByTagName(tagName);
                    }

                } else { // brute getElementsByTagName('*')
                    child = root.firstChild;
                    while (child) {
                        if (child.tagName) { // only collect HTMLElements
                            nodes.push(child);
                        }
                        child = child.nextSilbing || child.firstChild;
                    }
                }
                if (nodes.length) {
                    ret = Selector._filterNodes(nodes, tokens, firstOnly);
                }
            }

            return ret;
        },
        
        _filterNodes: function(nodes, tokens, firstOnly) {
            var i = 0,
                j,
                len = tokens.length,
                n = len - 1,
                result = [],
                node = nodes[0],
                tmpNode = node,
                getters = Selector.getters,
                operator,
                combinator,
                token,
                path,
                pass,
                //FUNCTION = 'function',
                value,
                tests,
                test;

            //do {
            for (i = 0; (tmpNode = node = nodes[i++]);) {
                n = len - 1;
                path = null;
                
                testLoop:
                while (tmpNode &amp;&amp; tmpNode.tagName) {
                    token = tokens[n];
                    tests = token.tests;
                    j = tests.length;
                    if (j &amp;&amp; !pass) {
                        while ((test = tests[--j])) {
                            operator = test[1];
                            if (getters[test[0]]) {
                                value = getters[test[0]](tmpNode, test[0]);
                            } else {
                                value = tmpNode[test[0]];
                                // use getAttribute for non-standard attributes
                                if (value === undefined &amp;&amp; tmpNode.getAttribute) {
                                    value = tmpNode.getAttribute(test[0]);
                                }
                            }

                            if ((operator === '=' &amp;&amp; value !== test[2]) ||  // fast path for equality
                                (typeof operator !== 'string' &amp;&amp; // protect against String.test monkey-patch (Moo)
                                operator.test &amp;&amp; !operator.test(value)) ||  // regex test
                                (!operator.test &amp;&amp; // protect against RegExp as function (webkit)
                                        typeof operator === 'function' &amp;&amp; !operator(tmpNode, test[0], test[2]))) { // function test

                                // skip non element nodes or non-matching tags
                                if ((tmpNode = tmpNode[path])) {
                                    while (tmpNode &amp;&amp;
                                        (!tmpNode.tagName ||
                                            (token.tagName &amp;&amp; token.tagName !== tmpNode.tagName))
                                    ) {
                                        tmpNode = tmpNode[path]; 
                                    }
                                }
                                continue testLoop;
                            }
                        }
                    }

                    n--; // move to next token
                    // now that we've passed the test, move up the tree by combinator
                    if (!pass &amp;&amp; (combinator = token.combinator)) {
                        path = combinator.axis;
                        tmpNode = tmpNode[path];

                        // skip non element nodes
                        while (tmpNode &amp;&amp; !tmpNode.tagName) {
                            tmpNode = tmpNode[path]; 
                        }

                        if (combinator.direct) { // one pass only
                            path = null; 
                        }

                    } else { // success if we made it this far
                        result.push(node);
                        if (firstOnly) {
                            return result;
                        }
                        break;
                    }
                }
            }// while (tmpNode = node = nodes[++i]);
            node = tmpNode = null;
            return result;
        },

        combinators: {
            ' ': {
                axis: 'parentNode'
            },

            '&gt;': {
                axis: 'parentNode',
                direct: true
            },


            '+': {
                axis: 'previousSibling',
                direct: true
            }
        },

        _parsers: [
            {
                name: ATTRIBUTES,
                //re: /^\[(-?[a-z]+[\w\-]*)+([~\|\^\$\*!=]=?)?['&quot;]?([^\]]*?)['&quot;]?\]/i,
                re: /^\uE003(-?[a-z]+[\w\-]*)+([~\|\^\$\*!=]=?)?['&quot;]?([^\uE004'&quot;]*)['&quot;]?\uE004/i,
                fn: function(match, token) {
                    var operator = match[2] || '',
                        operators = Selector.operators,
                        escVal = (match[3]) ? match[3].replace(/\\/g, '') : '',
                        test;

                    // add prefiltering for ID and CLASS
                    if ((match[1] === 'id' &amp;&amp; operator === '=') ||
                            (match[1] === 'className' &amp;&amp;
                            Y_DOCUMENT_ELEMENT.getElementsByClassName &amp;&amp;
                            (operator === '~=' || operator === '='))) {
                        token.prefilter = match[1];


                        match[3] = escVal; 

                        // escape all but ID for prefilter, which may run through QSA (via Dom.allById)
                        token[match[1]] = (match[1] === 'id') ? match[3] : escVal;

                    }

                    // add tests
                    if (operator in operators) {
                        test = operators[operator];
                        if (typeof test === 'string') {
                            match[3] = escVal.replace(Selector._reRegExpTokens, '\\$1');
                            test = new RegExp(test.replace('{val}', match[3]));
                        }
                        match[2] = test;
                    }
                    if (!token.last || token.prefilter !== match[1]) {
                        return match.slice(1);
                    }
                }

            },
            {
                name: TAG_NAME,
                re: /^((?:-?[_a-z]+[\w-]*)|\*)/i,
                fn: function(match, token) {
                    var tag = match[1].toUpperCase();
                    token.tagName = tag;

                    if (tag !== '*' &amp;&amp; (!token.last || token.prefilter)) {
                        return [TAG_NAME, '=', tag];
                    }
                    if (!token.prefilter) {
                        token.prefilter = 'tagName';
                    }
                }
            },
            {
                name: COMBINATOR,
                re: /^\s*([&gt;+~]|\s)\s*/,
                fn: function(match, token) {
                }
            },
            {
                name: PSEUDOS,
                re: /^:([\-\w]+)(?:\uE005['&quot;]?([^\uE005]*)['&quot;]?\uE006)*/i,
                fn: function(match, token) {
                    var test = Selector[PSEUDOS][match[1]];
                    if (test) { // reorder match array and unescape special chars for tests
                        if (match[2]) {
                            match[2] = match[2].replace(/\\/g, '');
                        }
                        return [match[2], test]; 
                    } else { // selector token not supported (possibly missing CSS3 module)
                        return false;
                    }
                }
            }
            ],

        _getToken: function(token) {
            return {
                tagName: null,
                id: null,
                className: null,
                attributes: {},
                combinator: null,
                tests: []
            };
        },

        /**
            Break selector into token units per simple selector.
            Combinator is attached to the previous token.
         */
        _tokenize: function(selector) {
            selector = selector || '';
            selector = Selector._replaceShorthand(Y_Lang.trim(selector)); 
            var token = Selector._getToken(),     // one token per simple selector (left selector holds combinator)
                query = selector, // original query for debug report
                tokens = [],    // array of tokens
                found = false,  // whether or not any matches were found this pass
                match,         // the regex match
                test,
                i, parser;

            /*
                Search for selector patterns, store, and strip them from the selector string
                until no patterns match (invalid selector) or we run out of chars.

                Multiple attributes and pseudos are allowed, in any order.
                for example:
                    'form:first-child[type=button]:not(button)[lang|=en]'
            */

            outer:
            do {
                found = false; // reset after full pass

                for (i = 0; (parser = Selector._parsers[i++]);) {
                    if ( (match = parser.re.exec(selector)) ) { // note assignment
                        if (parser.name !== COMBINATOR ) {
                            token.selector = selector;
                        }
                        selector = selector.replace(match[0], ''); // strip current match from selector
                        if (!selector.length) {
                            token.last = true;
                        }

                        if (Selector._attrFilters[match[1]]) { // convert class to className, etc.
                            match[1] = Selector._attrFilters[match[1]];
                        }

                        test = parser.fn(match, token);
                        if (test === false) { // selector not supported
                            found = false;
                            break outer;
                        } else if (test) {
                            token.tests.push(test);
                        }

                        if (!selector.length || parser.name === COMBINATOR) {
                            tokens.push(token);
                            token = Selector._getToken(token);
                            if (parser.name === COMBINATOR) {
                                token.combinator = Selector.combinators[match[1]];
                            }
                        }
                        found = true;


                    }
                }
            } while (found &amp;&amp; selector.length);

            if (!found || selector.length) { // not fully parsed
                YAHOO.log('query: ' + query + ' contains unsupported token in: ' + selector, 'warn', 'Selector');
                tokens = [];
            }
            return tokens;
        },

        _replaceShorthand: function(selector) {
            var shorthand = Selector.shorthand,
                esc = selector.match(Selector._re.esc), // pull escaped colon, brackets, etc. 
                attrs,
                pseudos,
                re, i, len;

            if (esc) {
                selector = selector.replace(Selector._re.esc, '\uE000');
            }

            attrs = selector.match(Selector._re.attr);
            pseudos = selector.match(Selector._re.pseudos);

            if (attrs) {
                selector = selector.replace(Selector._re.attr, '\uE001');
            }

            if (pseudos) {
                selector = selector.replace(Selector._re.pseudos, '\uE002');
            }


            for (re in shorthand) {
                if (shorthand.hasOwnProperty(re)) {
                    selector = selector.replace(new RegExp(re, 'gi'), shorthand[re]);
                }
            }

            if (attrs) {
                for (i = 0, len = attrs.length; i &lt; len; ++i) {
                    selector = selector.replace(/\uE001/, attrs[i]);
                }
            }

            if (pseudos) {
                for (i = 0, len = pseudos.length; i &lt; len; ++i) {
                    selector = selector.replace(/\uE002/, pseudos[i]);
                }
            }

            selector = selector.replace(/\[/g, '\uE003');
            selector = selector.replace(/\]/g, '\uE004');

            selector = selector.replace(/\(/g, '\uE005');
            selector = selector.replace(/\)/g, '\uE006');

            if (esc) {
                for (i = 0, len = esc.length; i &lt; len; ++i) {
                    selector = selector.replace('\uE000', esc[i]);
                }
            }

            return selector;
        },

        _attrFilters: {
            'class': 'className',
            'for': 'htmlFor'
        },

        getters: {
            href: function(node, attr) {
                return Y_DOM.getAttribute(node, attr);
            }
        }
    };

Y_mix(Selector, SelectorCSS2, true);
Selector.getters.src = Selector.getters.rel = Selector.getters.href;

// IE wants class with native queries
if (Selector.useNative &amp;&amp; Y_DOC.querySelector) {
    Selector.shorthand['\\.([^\\s\\\\(\\[:]*)'] = '[class~=$1]';
}

/**
 * The selector css3 module provides support for css3 selectors.
 * @module dom
 * @submodule selector-css3
 * @for Selector
 */

/*
    an+b = get every _a_th node starting at the _b_th
    0n+b = no repeat (&quot;0&quot; and &quot;n&quot; may both be omitted (together) , e.g. &quot;0n+1&quot; or &quot;1&quot;, not &quot;0+1&quot;), return only the _b_th element
    1n+b =  get every element starting from b (&quot;1&quot; may may be omitted, e.g. &quot;1n+0&quot; or &quot;n+0&quot; or &quot;n&quot;)
    an+0 = get every _a_th element, &quot;0&quot; may be omitted 
*/

Selector._reNth = /^(?:([\-]?\d*)(n){1}|(odd|even)$)*([\-+]?\d*)$/;

Selector._getNth = function(node, expr, tag, reverse) {
    Selector._reNth.test(expr);
    var a = parseInt(RegExp.$1, 10), // include every _a_ elements (zero means no repeat, just first _a_)
        n = RegExp.$2, // &quot;n&quot;
        oddeven = RegExp.$3, // &quot;odd&quot; or &quot;even&quot;
        b = parseInt(RegExp.$4, 10) || 0, // start scan from element _b_
        result = [],
        siblings = Selector._children(node.parentNode, tag),
        op;

    if (oddeven) {
        a = 2; // always every other
        op = '+';
        n = 'n';
        b = (oddeven === 'odd') ? 1 : 0;
    } else if ( isNaN(a) ) {
        a = (n) ? 1 : 0; // start from the first or no repeat
    }

    if (a === 0) { // just the first
        if (reverse) {
            b = siblings.length - b + 1; 
        }

        if (siblings[b - 1] === node) {
            return true;
        } else {
            return false;
        }

    } else if (a &lt; 0) {
        reverse = !!reverse;
        a = Math.abs(a);
    }

    if (!reverse) {
        for (var i = b - 1, len = siblings.length; i &lt; len; i += a) {
            if ( i &gt;= 0 &amp;&amp; siblings[i] === node ) {
                return true;
            }
        }
    } else {
        for (var i = siblings.length - b, len = siblings.length; i &gt;= 0; i -= a) {
            if ( i &lt; len &amp;&amp; siblings[i] === node ) {
                return true;
            }
        }
    }
    return false;
};

Y_mix(Selector.pseudos, {
    'root': function(node) {
        return node === node.ownerDocument.documentElement;
    },

    'nth-child': function(node, expr) {
        return Selector._getNth(node, expr);
    },

    'nth-last-child': function(node, expr) {
        return Selector._getNth(node, expr, null, true);
    },

    'nth-of-type': function(node, expr) {
        return Selector._getNth(node, expr, node.tagName);
    },
     
    'nth-last-of-type': function(node, expr) {
        return Selector._getNth(node, expr, node.tagName, true);
    },
     
    'last-child': function(node) {
        var children = Selector._children(node.parentNode);
        return children[children.length - 1] === node;
    },

    'first-of-type': function(node) {
        return Selector._children(node.parentNode, node.tagName)[0] === node;
    },
     
    'last-of-type': function(node) {
        var children = Selector._children(node.parentNode, node.tagName);
        return children[children.length - 1] === node;
    },
     
    'only-child': function(node) {
        var children = Selector._children(node.parentNode);
        return children.length === 1 &amp;&amp; children[0] === node;
    },

    'only-of-type': function(node) {
        var children = Selector._children(node.parentNode, node.tagName);
        return children.length === 1 &amp;&amp; children[0] === node;
    },

    'empty': function(node) {
        return node.childNodes.length === 0;
    },

    'not': function(node, expr) {
        return !Selector.test(node, expr);
    },

    'contains': function(node, expr) {
        var text = node.innerText || node.textContent || '';
        return text.indexOf(expr) &gt; -1;
    },

    'checked': function(node) {
        return (node.checked === true || node.selected === true);
    },

    enabled: function(node) {
        return (node.disabled !== undefined &amp;&amp; !node.disabled);
    },

    disabled: function(node) {
        return (node.disabled);
    }
});

Y_mix(Selector.operators, {
    '^=': '^{val}', // Match starts with value
    '!=': function(node, attr, val) { return node[attr] !== val; }, // Match starts with value
    '$=': '{val}$', // Match ends with value
    '*=': '{val}' // Match contains value as substring 
});

Selector.combinators['~'] = {
    axis: 'previousSibling'
};
YAHOO.register(&quot;selector&quot;, YAHOO.util.Selector, {version: &quot;2.9.0&quot;, build: &quot;2800&quot;});
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