Reporting system update to include browsing by config-item rather than host-only. This enables users of the system to track down where problems are occuring across the system by looking in a package and system oriented way, rather than a host centric view only.

*It is expected to be useful to verify that critical security updates are applied.*

Additionally this update includes a bunch of files (yet not complete) from the Yahoo User Interface Library. It is sparsely incorporated as the files are used. This library is BSD licensed and provides great capability for the web reports. It also will help when incorporating ajax technology in to the reports for performance improvements.



git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@2660 ce84e21b-d406-0410-9b95-82705330c041

1 files changed, 1797 insertions, 0 deletions

diff --git a/reports/site_media/yui/event/event-debug.js b/reports/site_media/yui/event/event-debug.js
new file mode 100644
index 000000000..468e592e7
--- /dev/null
+++ b/reports/site_media/yui/event/event-debug.js
@@ -0,0 +1,1797 @@
+/*
+Copyright (c) 2006, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 0.12.2
+*/
+
+
+/**
+ * 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 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.
+ * @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 debug outpu 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) {
+        YAHOO.log( "Creating " + this, "info", "Event" );
+    }
+
+    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.
+     * @return {boolean} false if one of the subscribers returned false, 
+     *                   true otherwise
+     */
+    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) {
+            YAHOO.log( "Firing "       + this  + ", " + 
+                       "args: "        + args  + ", " +
+                       "subscribers: " + len,                 
+                       "info", "Event"                  );
+        }
+
+        for (i=0; i<len; ++i) {
+            var s = this.subscribers[i];
+            if (s) {
+                if (!this.silent) {
+                    YAHOO.log( this.type + "->" + (i+1) + ": " +  s, 
+                                "info", "Event" );
+                }
+
+                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) {
+                        YAHOO.log("Event cancelled, subscriber " + i + 
+                                  " of " + len);
+                    }
+
+                    //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 listener attached,
+             *                        or if the operation throws an exception.
+             * @static
+             */
+            addListener: function(el, sType, fn, obj, override) {
+
+
+                if (!fn || !fn.call) {
+                    // this.logger.debug("Error, function is not valid " + fn);
+                    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) {
+                    // this.logger.debug("unable to attach event " + 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 ("unload" == sType && obj !== this) {
+                    unloadListeners[unloadListeners.length] =
+                            [el, sType, fn, obj, override];
+                    return true;
+                }
+
+                // this.logger.debug("Adding handler: " + el + ", " + sType);
+
+                // 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 {
+                    try {
+                        this._simpleAdd(el, sType, wrappedFn, false);
+                    } catch(e) {
+                        // handle an error trying to attach an event.  If it fails
+                        // we need to clean up the cache
+                        this.removeListener(el, sType, fn);
+                        return 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) {
+                // this.logger.debug("fireLegacyEvent " + 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) {
+                    // this.logger.debug("Error, function is not valid " + fn);
+                    //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) {
+                    // this.logger.debug("cached listener not found");
+                    return false;
+                }
+
+                // this.logger.debug("Removing handler: " + el + ", " + sType);
+
+                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 {
+                    try {
+                        this._simpleRemove(el, sType, cacheItem[this.WFN], false);
+                    } catch(e) {
+                        return 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
+             * @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 == "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;
+
+                // this.logger.debug("tryPreloadAttach");
+
+                // 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
+                            // @todo verify IE7 compatibility
+                            // @todo should we test parentNode.nextSibling?
+                            // @todo re-evaluate global content 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];
+                                // null out instead of delete for Opera
+                                onAvailStack[i] = null;
+                            }
+                        } else {
+                            notAvail.push(item);
+                        }
+                    }
+                }
+
+                retryCount = (notAvail.length === 0) ? 0 : retryCount - 1;
+
+                if (tryAgain) {
+                    // we may need to strip the nulled out items here
+                    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] );
+                        unloadListeners[i] = null;
+                        l=null;
+                        scope=null;
+                    }
+                }
+
+                unloadListeners = 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];
+                    legacyEvents[i][0] = null;
+
+                    // delete the array item
+                    //delete legacyEvents[i];
+                    legacyEvents[i] = null;
+                }
+
+                legacyEvents = null;
+
+                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]) {
+            YAHOO.log("EventProvider: error, event already exists");
+        } 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 {
+            YAHOO.log("EventProvider.fire could not find event: " + p_type);
+            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;
+    }
+
+};
+