From 541bb378ddece2eab135a8066a16994e94436dea Mon Sep 17 00:00:00 2001
From: Giulio Cesare Solaroli <giulio.cesare@solaroli.it>
Date: Mon, 03 Oct 2011 16:04:12 +0000
Subject: Merge pull request #1 from gcsolaroli/master

First version of the restructured repository
---
(limited to 'frontend/beta/js/YUI/event.js')

diff --git a/frontend/beta/js/YUI/event.js b/frontend/beta/js/YUI/event.js
new file mode 100644
index 0000000..7bfac3b
--- a/dev/null
+++ b/frontend/beta/js/YUI/event.js
@@ -0,0 +1,1738 @@
+/*                                                                                                                                                      
+Copyright (c) 2006, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 0.12.0
+*/ 
+
+/**
+ * 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}  oScope The context the event will fire from.  "this" 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 log system
+ * @namespace YAHOO.util
+ * @class CustomEvent
+ * @constructor
+ */
+YAHOO.util.CustomEvent = function(type, oScope, silent, signature) {
+
+    /**
+     * The type of event, returned to subscribers when the event fires
+     * @property type
+     * @type string
+     */
+    this.type = type;
+
+    /**
+     * The scope the the event will fire from by default.  Defaults to the window 
+     * obj
+     * @property scope
+     * @type object
+     */
+    this.scope = oScope || window;
+
+    /**
+     * By default all custom events are logged in the debug build, set silent
+     * to true to disable logging for this event.
+     * @property silent
+     * @type boolean
+     */
+    this.silent = silent;
+
+    /**
+     * Custom events support two styles of arguments provided to the event
+     * subscribers.  
+     * <ul>
+     * <li>YAHOO.util.CustomEvent.LIST: 
+     *   <ul>
+     *   <li>param1: event name</li>
+     *   <li>param2: array of arguments sent to fire</li>
+     *   <li>param3: <optional> a custom object supplied by the subscriber</li>
+     *   </ul>
+     * </li>
+     * <li>YAHOO.util.CustomEvent.FLAT
+     *   <ul>
+     *   <li>param1: the first argument passed to fire.  If you need to
+     *           pass multiple parameters, use and array or object literal</li>
+     *   <li>param2: <optional> a custom object supplied by the subscriber</li>
+     *   </ul>
+     * </li>
+     * </ul>
+     *   @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) {
+    }
+
+    var onsubscribeType = "_YUICEOnSubscribe";
+
+    // 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 {Function} fn The function to execute
+         * @param {Object}   obj An object to be passed along when the event 
+         *                       fires
+         * @param {boolean|Object}  override If true, the obj passed in becomes 
+         *                                   the execution scope of the listener.
+         *                                   if an object, that object becomes the
+         *                                   the execution scope.
+         */
+        this.subscribeEvent = 
+                new YAHOO.util.CustomEvent(onsubscribeType, this, true);
+
+    } 
+};
+
+/**
+ * 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}  override If true, the obj passed in becomes 
+     *                                   the execution scope of the listener.
+     *                                   if an object, that object becomes the
+     *                                   the execution scope.
+     */
+    subscribe: function(fn, obj, override) {
+        if (this.subscribeEvent) {
+            this.subscribeEvent.fire(fn, obj, override);
+        }
+
+        this.subscribers.push( new YAHOO.util.Subscriber(fn, obj, override) );
+    },
+
+    /**
+     * Unsubscribes the caller from this event
+     * @method unsubscribe
+     * @param {Function} fn  The function to execute
+     * @param {Object}   obj  The custom object passed to subscribe (optional)
+     * @return {boolean} True if the subscriber was found and detached.
+     */
+    unsubscribe: function(fn, obj) {
+        var found = false;
+        for (var i=0, len=this.subscribers.length; i<len; ++i) {
+            var s = this.subscribers[i];
+            if (s && s.contains(fn, obj)) {
+                this._delete(i);
+                found = true;
+            }
+        }
+
+        return found;
+    },
+
+    /**
+     * Notifies the subscribers.  The callback functions will be executed
+     * from the scope specified when the event was created, and with the 
+     * following parameters:
+     *   <ul>
+     *   <li>The type of event</li>
+     *   <li>All of the arguments fire() was executed with as an array</li>
+     *   <li>The custom object (if any) that was passed into the subscribe() 
+     *       method</li>
+     *   </ul>
+     * @method fire 
+     * @param {Object*} arguments an arbitrary set of parameters to pass to 
+     *                            the handler.
+     */
+    fire: function() {
+        var len=this.subscribers.length;
+        if (!len && this.silent) {
+            return true;
+        }
+
+        var args=[], ret=true, i;
+
+        for (i=0; i<arguments.length; ++i) {
+            args.push(arguments[i]);
+        }
+
+        var argslength = args.length;
+
+        if (!this.silent) {
+        }
+
+        for (i=0; i<len; ++i) {
+            var s = this.subscribers[i];
+            if (s) {
+                if (!this.silent) {
+                }
+
+                var scope = s.getScope(this.scope);
+
+                if (this.signature == YAHOO.util.CustomEvent.FLAT) {
+                    var param = null;
+                    if (args.length > 0) {
+                        param = args[0];
+                    }
+                    ret = s.fn.call(scope, param, s.obj);
+                } else {
+                    ret = s.fn.call(scope, this.type, args, s.obj);
+                }
+                if (false === ret) {
+                    if (!this.silent) {
+                    }
+
+                    //break;
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    },
+
+    /**
+     * Removes all listeners
+     * @method unsubscribeAll
+     */
+    unsubscribeAll: function() {
+        for (var i=0, len=this.subscribers.length; i<len; ++i) {
+            this._delete(len - 1 - i);
+        }
+    },
+
+    /**
+     * @method _delete
+     * @private
+     */
+    _delete: function(index) {
+        var s = this.subscribers[index];
+        if (s) {
+            delete s.fn;
+            delete s.obj;
+        }
+
+        // delete this.subscribers[index];
+        this.subscribers.splice(index, 1);
+    },
+
+    /**
+     * @method toString
+     */
+    toString: function() {
+         return "CustomEvent: " + "'" + this.type  + "', " + 
+             "scope: " + 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}  override If true, the obj passed in becomes the execution
+ *                            scope of the listener
+ * @class Subscriber
+ * @constructor
+ */
+YAHOO.util.Subscriber = function(fn, obj, override) {
+
+    /**
+     * 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 = obj || null;
+
+    /**
+     * The default execution scope for the event listener is defined when the
+     * event is created (usually the object which contains the event).
+     * By setting override to true, the execution scope becomes the custom
+     * object passed in by the subscriber.  If override is an object, that 
+     * object becomes the scope.
+     * @property override
+     * @type boolean|object
+     */
+    this.override = override;
+
+};
+
+/**
+ * Returns the execution scope for this listener.  If override was set to true
+ * the custom obj will be the scope.  If override is an object, that is the
+ * scope, otherwise the default scope will be used.
+ * @method getScope
+ * @param {Object} defaultScope the scope to use if this listener does not
+ *                              override it.
+ */
+YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
+    if (this.override) {
+        if (this.override === true) {
+            return this.obj;
+        } else {
+            return this.override;
+        }
+    }
+    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 && this.obj == obj);
+    } else {
+        return (this.fn == fn);
+    }
+};
+
+/**
+ * @method toString
+ */
+YAHOO.util.Subscriber.prototype.toString = function() {
+    return "Subscriber { obj: " + (this.obj || "")  + 
+           ", override: " +  (this.override || "no") + " }";
+};
+
+/**
+ * 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.
+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
+         */
+        var listeners = [];
+
+        /**
+         * User-defined unload function that will be fired before all events
+         * are detached
+         * @property unloadListeners
+         * @type array
+         * @static
+         * @private
+         */
+        var unloadListeners = [];
+
+        /**
+         * Cache of DOM0 event handlers to work around issues with DOM2 events
+         * in Safari
+         * @property legacyEvents
+         * @static
+         * @private
+         */
+        var legacyEvents = [];
+
+        /**
+         * Listener stack for DOM0 events
+         * @property legacyHandlers
+         * @static
+         * @private
+         */
+        var legacyHandlers = [];
+
+        /**
+         * 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
+         */
+        var retryCount = 0;
+
+        /**
+         * onAvailable listeners
+         * @property onAvailStack
+         * @static
+         * @private
+         */
+        var onAvailStack = [];
+
+        /**
+         * Lookup table for legacy events
+         * @property legacyMap
+         * @static
+         * @private
+         */
+        var legacyMap = [];
+
+        /**
+         * Counter for auto id generation
+         * @property counter
+         * @static
+         * @private
+         */
+        var counter = 0;
+
+        return { // PREPROCESS
+
+            /**
+             * 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 200@amp;50 ms, so it will poll
+             * for 10 seconds or until all outstanding handlers are bound
+             * (whichever comes first).
+             * @property POLL_RETRYS
+             * @type int
+             * @static
+             * @final
+             */
+            POLL_RETRYS: 200,
+
+            /**
+             * The poll interval in milliseconds
+             * @property POLL_INTERVAL
+             * @type int
+             * @static
+             * @final
+             */
+            POLL_INTERVAL: 20,
+
+            /**
+             * 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 scope 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
+             * @property OBJ
+             * @type int
+             * @static
+             * @final
+             */
+            OBJ: 3,
+
+            /**
+             * Adjusted scope, 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,
+
+            /**
+             * Safari detection is necessary to work around the preventDefault
+             * bug that makes it so you can't cancel a href click from the 
+             * handler.  There is not a capabilities check we can use here.
+             * @property isSafari
+             * @private
+             * @static
+             */
+            isSafari: (/Safari|Konqueror|KHTML/gi).test(navigator.userAgent),
+
+            /**
+             * IE detection needed to properly calculate pageX and pageY.  
+             * capabilities checking didn't seem to work because another 
+             * browser that does not provide the properties have the values 
+             * calculated in a different manner than IE.
+             * @property isIE
+             * @private
+             * @static
+             */
+            isIE: (!this.isSafari && !navigator.userAgent.match(/opera/gi) && 
+                    navigator.userAgent.match(/msie/gi)),
+
+            /**
+             * poll handle
+             * @property _interval
+             * @private
+             */
+            _interval: null,
+
+            /**
+             * @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.timeout = setTimeout(callback, i);
+                }
+            },
+
+            /**
+             * 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.
+             *
+             * @method onAvailable
+             *
+             * @param {string}   p_id the id of the element to look for.
+             * @param {function} p_fn what to execute when the element is found.
+             * @param {object}   p_obj an optional object to be passed back as
+             *                   a parameter to p_fn.
+             * @param {boolean}  p_override If set to true, p_fn will execute
+             *                   in the scope of p_obj
+             *
+             * @static
+             */
+            onAvailable: function(p_id, p_fn, p_obj, p_override) {
+                onAvailStack.push( { id:         p_id, 
+                                     fn:         p_fn, 
+                                     obj:        p_obj, 
+                                     override:   p_override, 
+                                     checkReady: false    } );
+
+                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.
+             *
+             * @method onContentReady
+             *
+             * @param {string}   p_id the id of the element to look for.
+             * @param {function} p_fn what to execute when the element is ready.
+             * @param {object}   p_obj an optional object to be passed back as
+             *                   a parameter to p_fn.
+             * @param {boolean}  p_override If set to true, p_fn will execute
+             *                   in the scope of p_obj
+             *
+             * @static
+             */
+            onContentReady: function(p_id, p_fn, p_obj, p_override) {
+                onAvailStack.push( { id:         p_id, 
+                                     fn:         p_fn, 
+                                     obj:        p_obj, 
+                                     override:   p_override,
+                                     checkReady: true      } );
+
+                retryCount = this.POLL_RETRYS;
+                this.startInterval();
+            },
+
+            /**
+             * Appends an event handler
+             *
+             * @method addListener
+             *
+             * @param {Object}   el        The html element to assign the 
+             *                             event 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}  override  If true, the obj passed in becomes
+             *                             the execution scope of the listener
+             * @return {boolean} True if the action was successful or defered,
+             *                        false if one or more of the elements 
+             *                        could not have the event bound to it.
+             * @static
+             */
+            addListener: function(el, sType, fn, obj, override) {
+
+                if (!fn || !fn.call) {
+                    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<len; ++i) {
+                        ok = this.on(el[i], 
+                                       sType, 
+                                       fn, 
+                                       obj, 
+                                       override) && ok;
+                    }
+                    return ok;
+
+                } else if (typeof el == "string") {
+                    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.on(el, sType, fn, obj, override);
+                        });
+
+                        return true;
+                    }
+                }
+
+                // Element should be an html element or an array if we get 
+                // here.
+                if (!el) {
+                    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 ("unload" == sType && obj !== this) {
+                    unloadListeners[unloadListeners.length] =
+                            [el, sType, fn, obj, override];
+                    return true;
+                }
+
+                // if the user chooses to override the scope, we use the custom
+                // object passed in, otherwise the executing scope will be the
+                // HTML element that the event is registered on
+                var scope = el;
+                if (override) {
+                    if (override === true) {
+                        scope = obj;
+                    } else {
+                        scope = override;
+                    }
+                }
+
+                // wrap the function so we can return the obj object when
+                // the event fires;
+                var wrappedFn = function(e) {
+                        return fn.call(scope, YAHOO.util.Event.getEvent(e), 
+                                obj);
+                    };
+
+                var li = [el, sType, fn, wrappedFn, scope];
+                var index = listeners.length;
+                // cache the listener so we can try to automatically unload
+                listeners[index] = li;
+
+                if (this.useLegacyEvent(el, sType)) {
+                    var legacyIndex = this.getLegacyIndex(el, sType);
+
+                    // Add a new dom0 wrapper if one is not detected for this
+                    // element
+                    if ( legacyIndex == -1 || 
+                                el != legacyEvents[legacyIndex][0] ) {
+
+                        legacyIndex = legacyEvents.length;
+                        legacyMap[el.id + sType] = legacyIndex;
+
+                        // cache the signature for the DOM0 event, and 
+                        // include the existing handler for the event, if any
+                        legacyEvents[legacyIndex] = 
+                            [el, sType, el["on" + sType]];
+                        legacyHandlers[legacyIndex] = [];
+
+                        el["on" + sType] = 
+                            function(e) {
+                                YAHOO.util.Event.fireLegacyEvent(
+                                    YAHOO.util.Event.getEvent(e), legacyIndex);
+                            };
+                    }
+
+                    // add a reference to the wrapped listener to our custom
+                    // stack of events
+                    //legacyHandlers[legacyIndex].push(index);
+                    legacyHandlers[legacyIndex].push(li);
+
+                } else {
+                    this._simpleAdd(el, sType, wrappedFn, false);
+                }
+
+                return true;
+                
+            },
+
+            /**
+             * When using legacy events, the handler is routed to this object
+             * so we can fire our custom listener stack.
+             * @method fireLegacyEvent
+             * @static
+             * @private
+             */
+            fireLegacyEvent: function(e, legacyIndex) {
+                var ok = true;
+
+                var le = legacyHandlers[legacyIndex];
+                for (var i=0,len=le.length; i<len; ++i) {
+                    var li = le[i];
+                    if ( li && li[this.WFN] ) {
+                        var scope = li[this.ADJ_SCOPE];
+                        var ret = li[this.WFN].call(scope, e);
+                        ok = (ok && ret);
+                    }
+                }
+
+                return ok;
+            },
+
+            /**
+             * Returns the legacy event index that matches the supplied 
+             * signature
+             * @method getLegacyIndex
+             * @static
+             * @private
+             */
+            getLegacyIndex: function(el, sType) {
+                var key = this.generateId(el) + sType;
+                if (typeof legacyMap[key] == "undefined") { 
+                    return -1;
+                } else {
+                    return legacyMap[key];
+                }
+            },
+
+            /**
+             * Logic that determines when we should automatically use legacy
+             * events instead of DOM2 events.
+             * @method useLegacyEvent
+             * @static
+             * @private
+             */
+            useLegacyEvent: function(el, sType) {
+                if (!el.addEventListener && !el.attachEvent) {
+                    return true;
+                } else if (this.isSafari) {
+                    if ("click" == sType || "dblclick" == sType) {
+                        return true;
+                    }
+                }
+                return false;
+            },
+                    
+            /**
+             * Removes an event handler
+             *
+             * @method removeListener
+             *
+             * @param {Object} el the html element or the id of the element to 
+             * assign the event to.
+             * @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;
+
+                // The el argument can be a string
+                if (typeof el == "string") {
+                    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=0,len=el.length; i<len; ++i) {
+                        ok = ( this.removeListener(el[i], sType, fn) && ok );
+                    }
+                    return ok;
+                }
+
+                if (!fn || !fn.call) {
+                    //return false;
+                    return this.purgeElement(el, false, sType);
+                }
+
+                if ("unload" == sType) {
+
+                    for (i=0, len=unloadListeners.length; i<len; i++) {
+                        var li = unloadListeners[i];
+                        if (li && 
+                            li[0] == el && 
+                            li[1] == sType && 
+                            li[2] == fn) {
+                                unloadListeners.splice(i, 1);
+                                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 ("undefined" == typeof index) {
+                    index = this._getCacheIndex(el, sType, fn);
+                }
+
+                if (index >= 0) {
+                    cacheItem = listeners[index];
+                }
+
+                if (!el || !cacheItem) {
+                    return false;
+                }
+
+                if (this.useLegacyEvent(el, sType)) {
+                    var legacyIndex = this.getLegacyIndex(el, sType);
+                    var llist = legacyHandlers[legacyIndex];
+                    if (llist) {
+                        for (i=0, len=llist.length; i<len; ++i) {
+                            li = llist[i];
+                            if (li && 
+                                li[this.EL] == el && 
+                                li[this.TYPE] == sType && 
+                                li[this.FN] == fn) {
+                                    llist.splice(i, 1);
+                                    break;
+                            }
+                        }
+                    }
+
+                } else {
+                    this._simpleRemove(el, sType, cacheItem[this.WFN], false);
+                }
+
+                // removed the wrapped handler
+                delete listeners[index][this.WFN];
+                delete listeners[index][this.FN];
+                listeners.splice(index, 1);
+
+                return true;
+
+            },
+
+            /**
+             * Returns the event's target element
+             * @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.
+             * @method resolveTextNode
+             * @param {HTMLElement} node node to resolve
+             * @return {HTMLElement} the normized node
+             * @static
+             */
+            resolveTextNode: function(node) {
+                // if (node && node.nodeName && 
+                        // "#TEXT" == node.nodeName.toUpperCase()) {
+                if (node && 3 == node.nodeType) {
+                    return node.parentNode;
+                } else {
+                    return node;
+                }
+            },
+
+            /**
+             * 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 && 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 && 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
+             * @type int[]
+             * @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 == "mouseout") {
+                        t = ev.toElement;
+                    } else if (ev.type == "mouseover") {
+                        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(e) { 
+                        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
+             * @return {Event} the event 
+             * @static
+             */
+            getEvent: function(e) {
+                var ev = e || window.event;
+
+                if (!ev) {
+                    var c = this.getEvent.caller;
+                    while (c) {
+                        ev = c.arguments[0];
+                        if (ev && 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) {
+                return ev.charCode || ev.keyCode || 0;
+            },
+
+            /**
+             * Locating the saved event handler data by function ref
+             *
+             * @method _getCacheIndex
+             * @static
+             * @private
+             */
+            _getCacheIndex: function(el, sType, fn) {
+                for (var i=0,len=listeners.length; i<len; ++i) {
+                    var li = listeners[i];
+                    if ( li                 && 
+                         li[this.FN] == fn  && 
+                         li[this.EL] == el  && 
+                         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 = "yuievtautoid-" + 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) {
+                // this.logger.debug(o.constructor.toString())
+                // this.logger.debug(typeof o)
+
+                return ( o                    && // o is something
+                         o.length             && // o is indexed
+                         typeof o != "string" && // o is not a string
+                         !o.tagName           && // o is not an HTML element
+                         !o.alert             && // o is not a window
+                         typeof o[0] != "undefined" );
+
+            },
+
+            /**
+             * @private
+             * @property elCache
+             * DOM element cache
+             * @static
+             */
+            elCache: {},
+
+            /**
+             * We cache elements bound by id because when the unload event 
+             * fires, we can no longer use document.getElementById
+             * @method getEl
+             * @static
+             * @private
+             */
+            getEl: function(id) {
+                return document.getElementById(id);
+            },
+
+            /**
+             * Clears the element cache
+             * @deprecated Elements are not cached any longer
+             * @method clearCache
+             * @static
+             * @private
+             */
+            clearCache: function() { },
+
+            /**
+             * hook up any deferred listeners
+             * @method _load
+             * @static
+             * @private
+             */
+            _load: function(e) {
+                loadComplete = true;
+                var EU = YAHOO.util.Event;
+                // Remove the listener to assist with the IE memory issue, but not
+                // for other browsers because FF 1.0x does not like it.
+                if (this.isIE) {
+                    EU._simpleRemove(window, "load", EU._load);
+                }
+            },
+
+            /**
+             * 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 (this.locked) {
+                    return false;
+                }
+
+                this.locked = true;
+
+                // 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 > 0);
+                }
+
+                // onAvailable
+                var notAvail = [];
+                for (var i=0,len=onAvailStack.length; i<len ; ++i) {
+                    var item = onAvailStack[i];
+                    if (item) {
+                        var el = this.getEl(item.id);
+
+                        if (el) {
+                            // The element is available, but not necessarily ready
+
+                            if ( !item.checkReady || 
+                                    loadComplete || 
+                                    el.nextSibling ||
+                                    (document && document.body) ) {
+
+                                var scope = el;
+                                if (item.override) {
+                                    if (item.override === true) {
+                                        scope = item.obj;
+                                    } else {
+                                        scope = item.override;
+                                    }
+                                }
+                                item.fn.call(scope, item.obj);
+                                delete onAvailStack[i];
+                            }
+                        } else {
+                            notAvail.push(item);
+                        }
+                    }
+                }
+
+                retryCount = (notAvail.length === 0) ? 0 : retryCount - 1;
+
+                if (tryAgain) {
+                    this.startInterval();
+                } else {
+                    clearInterval(this._interval);
+                    this._interval = null;
+                }
+
+                this.locked = false;
+
+                return true;
+
+            },
+
+            /**
+             * 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 elListeners = this.getListeners(el, sType);
+                if (elListeners) {
+                    for (var i=0,len=elListeners.length; i<len ; ++i) {
+                        var l = elListeners[i];
+                        // can't use the index on the changing collection
+                        //this.removeListener(el, l.type, l.fn, l.index);
+                        this.removeListener(el, l.type, l.fn);
+                    }
+                }
+
+                if (recurse && el && el.childNodes) {
+                    for (i=0,len=el.childNodes.length; i<len ; ++i) {
+                        this.purgeElement(el.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} the element 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:
+             * &nbsp;&nbsp;type:   (string)   the type of event
+             * &nbsp;&nbsp;fn:     (function) the callback supplied to addListener
+             * &nbsp;&nbsp;obj:    (object)   the custom object supplied to addListener
+             * &nbsp;&nbsp;adjust: (boolean)  whether or not to adjust the default scope
+             * &nbsp;&nbsp;index:  (int)      its position in the Event util listener cache
+             * @static
+             */           
+            getListeners: function(el, sType) {
+                var elListeners = [];
+                if (listeners && listeners.length > 0) {
+                    for (var i=0,len=listeners.length; i<len ; ++i) {
+                        var l = listeners[i];
+                        if ( l  && l[this.EL] === el && 
+                                (!sType || sType === l[this.TYPE]) ) {
+                            elListeners.push({
+                                type:   l[this.TYPE],
+                                fn:     l[this.FN],
+                                obj:    l[this.OBJ],
+                                adjust: l[this.ADJ_SCOPE],
+                                index:  i
+                            });
+                        }
+                    }
+                }
+
+                return (elListeners.length) ? elListeners : 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;
+
+                for (i=0,len=unloadListeners.length; i<len; ++i) {
+                    l = unloadListeners[i];
+                    if (l) {
+                        var scope = window;
+                        if (l[EU.ADJ_SCOPE]) {
+                            if (l[EU.ADJ_SCOPE] === true) {
+                                scope = l[EU.OBJ];
+                            } else {
+                                scope = l[EU.ADJ_SCOPE];
+                            }
+                        }
+                        l[EU.FN].call(scope, EU.getEvent(e), l[EU.OBJ] );
+                        delete unloadListeners[i];
+                        l=null;
+                        scope=null;
+                    }
+                }
+
+                if (listeners && listeners.length > 0) {
+                    j = listeners.length;
+                    while (j) {
+                        index = j-1;
+                        l = listeners[index];
+                        if (l) {
+                            EU.removeListener(l[EU.EL], l[EU.TYPE], 
+                                    l[EU.FN], index);
+                        } 
+                        j = j - 1;
+                    }
+                    l=null;
+
+                    EU.clearCache();
+                }
+
+                for (i=0,len=legacyEvents.length; i<len; ++i) {
+                    // dereference the element
+                    delete legacyEvents[i][0];
+                    // delete the array item
+                    delete legacyEvents[i];
+                }
+
+                EU._simpleRemove(window, "unload", EU._unload);
+
+            },
+
+            /**
+             * 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 && (dd.scrollTop || dd.scrollLeft)) {
+                    return [dd.scrollTop, dd.scrollLeft];
+                } else if (db) {
+                    return [db.scrollTop, db.scrollLeft];
+                } else {
+                    return [0, 0];
+                }
+            },
+
+            /**
+             * Adds a DOM event directly without the caching, cleanup, scope 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("on" + 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("on" + sType, fn);
+                    };
+                } else {
+                    return function(){};
+                }
+            }()
+        };
+
+    }();
+
+    (function() {
+        var EU = YAHOO.util.Event;
+
+        /**
+         * YAHOO.util.Event.on is an alias for addListener
+         * @method on
+         * @see addListener
+         * @static
+         */
+        EU.on = EU.addListener;
+
+        // YAHOO.mix(EU, YAHOO.util.EventProvider.prototype);
+        // EU.createEvent("DOMContentReady");
+        // EU.subscribe("DOMContentReady", EU._load);
+
+        if (document && document.body) {
+            EU._load();
+        } else {
+            // EU._simpleAdd(document, "DOMContentLoaded", EU._load);
+            EU._simpleAdd(window, "load", EU._load);
+        }
+        EU._simpleAdd(window, "unload", 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
+     * @param p_obj      {Object}   An object to be passed along when the event 
+     *                              fires
+     * @param p_override {boolean}  If true, the obj passed in becomes the 
+     *                              execution scope of the listener
+     */
+    subscribe: function(p_type, p_fn, p_obj, p_override) {
+
+        this.__yui_events = this.__yui_events || {};
+        var ce = this.__yui_events[p_type];
+
+        if (ce) {
+            ce.subscribe(p_fn, p_obj, p_override);
+        } 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, override: p_override } );
+        }
+    },
+
+    /**
+     * Unsubscribes the from the specified event
+     * @method unsubscribe
+     * @param p_type {string}   The type, or name of the event
+     * @param p_fn   {Function} The function to execute
+     * @param p_obj  {Object}   The custom object passed to subscribe (optional)
+     * @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 ce = this.__yui_events[p_type];
+        if (ce) {
+            return ce.unsubscribe(p_fn, p_obj);
+        } else {
+            return false;
+        }
+    },
+
+    /**
+     * 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:
+     *
+     *  <ul>
+     *    <li>
+     *      scope: defines the default execution scope.  If not defined
+     *      the default scope will be this instance.
+     *    </li>
+     *    <li>
+     *      silent: if true, the custom event will not generate log messages.
+     *      This is false by default.
+     *    </li>
+     *    <li>
+     *      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.
+     *    </li>
+     *  </ul>
+     *
+     *  @return {CustomEvent} the custom event
+     *
+     */
+    createEvent: function(p_type, p_config) {
+
+        this.__yui_events = this.__yui_events || {};
+        var opts = p_config || {};
+        var events = this.__yui_events;
+
+        if (events[p_type]) {
+        } else {
+
+            var scope  = opts.scope  || this;
+            var silent = opts.silent || null;
+
+            var ce = new YAHOO.util.CustomEvent(p_type, scope, silent,
+                    YAHOO.util.CustomEvent.FLAT);
+            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<qs.length; ++i) {
+                    ce.subscribe(qs[i].fn, qs[i].obj, qs[i].override);
+                }
+            }
+        }
+
+        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:
+     *   <ul>
+     *   <li>The first argument fire() was executed with</li>
+     *   <li>The custom object (if any) that was passed into the subscribe() 
+     *       method</li>
+     *   </ul>
+     * @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, or null if 
+     *                   the custom event does not exist.
+     */
+    fireEvent: function(p_type, arg1, arg2, etc) {
+
+        this.__yui_events = this.__yui_events || {};
+        var ce = this.__yui_events[p_type];
+
+        if (ce) {
+            var args = [];
+            for (var i=1; i<arguments.length; ++i) {
+                args.push(arguments[i]);
+            }
+            return ce.fire.apply(ce, args);
+        } else {
+            return null;
+        }
+    },
+
+    /**
+     * 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;
+    }
+
+};
+
--
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