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YUI.add('yui2-element', function(Y) {

    var YAHOO    = Y.YUI2;

    /*

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 && this._written) ) {

            return false; // write not allowed

        }

        if (this.validator && !this.validator.call(owner, value) ) {

            return false; // invalid value

        }

        if (!silent) {

            beforeRetVal = owner.fireBeforeChangeEvent(event);

            if (beforeRetVal === false) {

                return false;

            }

        }

        if (this.setter) {

            value = this.setter.call(owner, value, this.name);

            if (value === undefined) {

            }

            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)) {

                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) {

                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) &&

                        !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 < 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 && 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] && !Event._createMouseDelegate) {

	        return false;

		}

        if (!this._events[type]) { // create on the fly

            if (el && this.DOM_EVENTS[type]) {

				Event.on(el, type, function(e, matchedEl) {

					// Supplement IE with target, currentTarget relatedTarget

	                if (e.srcElement && !e.target) {

	                    e.target = e.srcElement;

	                }

					if ((e.toElement && !e.relatedTarget) || (e.fromElement && !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 < 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 && before.get) ?

                before.get('element') : Dom.get(before);

        var element = this.get('element');

        if (!element) {

            return false;

        }

        if (!parent) {

            return false;

        }

        if (element.parent != parent) {

            if (before) {

                parent.insertBefore(element, before);

            } else {

                parent.appendChild(element);

            }

        }

        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 && !configs[key] && !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 < 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) && !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 "get" works while queueing

            }

            return;

        }

        // set it on the element if not configured and is an HTML attribute

        if ( !this._configs[key] && !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 && 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.