/*
Copyright (c) 2007, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.2.2
*/


YAHOO.util.CustomEvent = function(type, oScope, silent, signature) {

 
    this.type = type;

 
    this.scope = oScope || window;

    this.silent = silent;

 
    this.signature = signature || YAHOO.util.CustomEvent.LIST;
    this.subscribers = [];

    if (!this.silent) {
    }

    var onsubscribeType = "_YUICEOnSubscribe";

    if (type !== onsubscribeType) {


        this.subscribeEvent = 
                new YAHOO.util.CustomEvent(onsubscribeType, this, true);

    } 
};


YAHOO.util.CustomEvent.LIST = 0;


YAHOO.util.CustomEvent.FLAT = 1;

YAHOO.util.CustomEvent.prototype = {

  
    subscribe: function(fn, obj, override) {

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

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

        this.subscribers.push( new YAHOO.util.Subscriber(fn, obj, override) );
    },

    unsubscribe: function(fn, obj) {

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

        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;
    },

  
    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;
    },
    unsubscribeAll: function() {
        for (var i=0, len=this.subscribers.length; i<len; ++i) {
            this._delete(len - 1 - i);
        }

        return i;
    },

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

         this.subscribers.splice(index, 1);
    },

 
    toString: function() {
         return "CustomEvent: " + "'" + this.type  + "', " + 
             "scope: " + this.scope;

    }
};


YAHOO.util.Subscriber = function(fn, obj, override) {

    this.fn = fn;

    this.obj = obj || null;

    this.override = override;

};


YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
    if (this.override) {
        if (this.override === true) {
            return this.obj;
        } else {
            return this.override;
        }
    }
    return defaultScope;
};

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") + " }";
};


if (!YAHOO.util.Event) {


    YAHOO.util.Event = function() {

     
        var loadComplete =  false;

    
        var DOMReady = false;

     
        var listeners = [];

     
        var unloadListeners = [];

      
        var legacyEvents = [];

      
        var legacyHandlers = [];

      
        var retryCount = 0;

     
        var onAvailStack = [];

     
        var legacyMap = [];

        var counter = 0;
        
     
        var lastError = null;

        return {

     
            POLL_RETRYS: 200,

       
            POLL_INTERVAL: 10,

     
            EL: 0,

       
            TYPE: 1,

    
            FN: 2,

            WFN: 3,

      
            OBJ: 3,

            ADJ_SCOPE: 4,

            isSafari: (/KHTML/gi).test(navigator.userAgent),
    
            webkit: function() {
                var v=navigator.userAgent.match(/AppleWebKit\/([^ ]*)/);
                if (v&&v[1]) {
                    return v[1];
                }
                return null;
            }(),
   
            isIE: (!this.webkit && !navigator.userAgent.match(/opera/gi) && 
                    navigator.userAgent.match(/msie/gi)),

     
            _interval: null,

       
            startInterval: function() {
                if (!this._interval) {
                    var self = this;
                    var callback = function() { self._tryPreloadAttach(); };
                    this._interval = setInterval(callback, this.POLL_INTERVAL);
                }
            },

     
            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();
            },

   
            onDOMReady: function(p_fn, p_obj, p_override) {
                this.DOMReadyEvent.subscribe(p_fn, p_obj, p_override);
            },

            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();
            },


            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 (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;
                }

                   if ("unload" == sType && obj !== this) {
                    unloadListeners[unloadListeners.length] =
                            [el, sType, fn, obj, override];
                    return true;
                }


                  var scope = el;
                if (override) {
                    if (override === true) {
                        scope = obj;
                    } else {
                        scope = override;
                    }
                }
            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);
                            };
                    }

      
                    legacyHandlers[legacyIndex].push(li);

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

                return true;
                
            },

       
            fireLegacyEvent: function(e, legacyIndex) {
                var ok=true,le,lh,li,scope,ret;
                
                lh = legacyHandlers[legacyIndex];
                for (var i=0,len=lh.length; i<len; ++i) {
                    li = lh[i];
                    if ( li && li[this.WFN] ) {
                        scope = li[this.ADJ_SCOPE];
                        ret = li[this.WFN].call(scope, e);
                        ok = (ok && ret);
                    }
                }

       
                le = legacyEvents[legacyIndex];
                if (le && le[2]) {
                    le[2](e);
                }
                
                return ok;
            },

      
            getLegacyIndex: function(el, sType) {
                var key = this.generateId(el) + sType;
                if (typeof legacyMap[key] == "undefined") { 
                    return -1;
                } else {
                    return legacyMap[key];
                }
            },

   
            useLegacyEvent: function(el, sType) {
                if (this.webkit && ("click"==sType || "dblclick"==sType)) {
                    var v = parseInt(this.webkit, 10);
                    if (!isNaN(v) && v<418) {
                        return true;
                    }
                }
                return false;
            },
                    
     
            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;
                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 {
                    try {
                        this._simpleRemove(el, sType, cacheItem[this.WFN], false);
                    } catch(ex) {
                        this.lastError = ex;
                        return false;
                    }
                }

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

                return true;

            },

    
            getTarget: function(ev, resolveTextNode) {
                var t = ev.target || ev.srcElement;
                return this.resolveTextNode(t);
            },

     
            resolveTextNode: function(node) {
                // if (node && node.nodeName && 
                        // "#TEXT" == node.nodeName.toUpperCase()) {
                if (node && 3 == node.nodeType) {
                    return node.parentNode;
                } else {
                    return node;
                }
            },

            getPageX: function(ev) {
                var x = ev.pageX;
                if (!x && 0 !== x) {
                    x = ev.clientX || 0;

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

                return x;
            },

     
            getPageY: function(ev) {
                var y = ev.pageY;
                if (!y && 0 !== y) {
                    y = ev.clientY || 0;

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


                return y;
            },

            getXY: function(ev) {
                return [this.getPageX(ev), this.getPageY(ev)];
            },

     
            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);
            },

     
            getTime: function(ev) {
                if (!ev.time) {
                    var t = new Date().getTime();
                    try {
                        ev.time = t;
                    } catch(ex) { 
                        this.lastError = ex;
                        return t;
                    }
                }

                return ev.time;
            },

    
            stopEvent: function(ev) {
                this.stopPropagation(ev);
                this.preventDefault(ev);
            },

            stopPropagation: function(ev) {
                if (ev.stopPropagation) {
                    ev.stopPropagation();
                } else {
                    ev.cancelBubble = true;
                }
            },

     
            preventDefault: function(ev) {
                if (ev.preventDefault) {
                    ev.preventDefault();
                } else {
                    ev.returnValue = false;
                }
            },
             
     
            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;
            },
            getCharCode: function(ev) {
                return ev.charCode || ev.keyCode || 0;
            },

            _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;
            },

            generateId: function(el) {
                var id = el.id;

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

                return id;
            },


 
            _isValidCollection: function(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" );

            },

           elCache: {},

             getEl: function(id) {
                return document.getElementById(id);
            },

             clearCache: function() { },
            DOMReadyEvent: new YAHOO.util.CustomEvent("DOMReady", this),

           _load: function(e) {
                if (!loadComplete) {
                    loadComplete = true;
                    var EU = YAHOO.util.Event;

                    // just in case DOMReady did not go off for some reason
                    EU._ready();
                    if (this.isIE) {
                        EU._simpleRemove(window, "load", EU._load);
                    }
                }
            },

            _ready: function(e) {
                if (!DOMReady) {
                    DOMReady=true;
                    var EU = YAHOO.util.Event;

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

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

      
            _tryPreloadAttach: function() {

                if (this.locked) {
                    return false;
                }


                if (this.isIE && !DOMReady) {
                    return false;
                }

                this.locked = true;

               var tryAgain = !loadComplete;
                if (!tryAgain) {
                    tryAgain = (retryCount > 0);
                }

                // onAvailable
                var notAvail = [];

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

                var i,len,item,el;

                // onAvailable
                for (i=0,len=onAvailStack.length; i<len; ++i) {
                    item = onAvailStack[i];
                    if (item && !item.checkReady) {
                        el = this.getEl(item.id);
                        if (el) {
                            executeItem(el, item);
                            onAvailStack[i] = null;
                        } else {
                            notAvail.push(item);
                        }
                    }
                }

                // onContentReady
                for (i=0,len=onAvailStack.length; i<len; ++i) {
                    item = onAvailStack[i];
                    if (item && item.checkReady) {
                        el = this.getEl(item.id);

                        if (el) {
                            // The element is available, but not necessarily ready
                            // @todo should we test parentNode.nextSibling?
                            if (loadComplete || el.nextSibling) {
                                executeItem(el, item);
                                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;

            },

      
            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);
                    }
                }
            },

   
            getListeners: function(el, sType) {
                var results=[], searchLists;
                if (!sType) {
                    searchLists = [listeners, unloadListeners];
                } else if (sType == "unload") {
                    searchLists = [unloadListeners];
                } else {
                    searchLists = [listeners];
                }

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

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

            _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);

            },

      
            _getScrollLeft: function() {
                return this._getScroll()[1];
            },

      
            _getScrollTop: function() {
                return this._getScroll()[0];
            },

   
            _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];
                }
            },
            
 
            regCE: function() {
                // does nothing
            },

 
            _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(){};
                }
            }(),

            _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;

 
        EU.on = EU.addListener;

   
        if (EU.isIE) {
	
            document.write(
'<scr' + 'ipt id="_yui_eu_dr" defer="true" src="//:"></script>');
        
            var el = document.getElementById("_yui_eu_dr");
            el.onreadystatechange = function() {
                if ("complete" == this.readyState) {
                    this.parentNode.removeChild(this);
                    YAHOO.util.Event._ready();
                }
            };

            el=null;

            // Process onAvailable/onContentReady items when when the 
            // DOM is ready.
            YAHOO.util.Event.onDOMReady(
                    YAHOO.util.Event._tryPreloadAttach,
                    YAHOO.util.Event, true);
        
        // Safari: The document's readyState in Safari currently will
        // change to loaded/complete before images are loaded.
        } else if (EU.webkit) {

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

        // FireFox and Opera: These browsers provide a event for this
        // moment.
        } else {

            EU._simpleAdd(document, "DOMContentLoaded", EU._ready);

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

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

YAHOO.util.EventProvider = function() { };

YAHOO.util.EventProvider.prototype = {

  
    __yui_events: null,

  
    __yui_subscribers: null,
  
    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 } );
        }
    },

 
    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;
        }
    },
  
    unsubscribeAll: function(p_type) {
        return this.unsubscribe(p_type);
    },

 
    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];
    },


  
    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;
        }
    },

  
    hasEvent: function(type) {
        if (this.__yui_events) {
            if (this.__yui_events[type]) {
                return true;
            }
        }
        return false;
    }

};


YAHOO.util.KeyListener = function(attachTo, keyData, handler, event) {
    if (!attachTo) {
    } else if (!keyData) {
    } else if (!handler) {
    } 
    
    if (!event) {
        event = YAHOO.util.KeyListener.KEYDOWN;
    }

   
    var keyEvent = new YAHOO.util.CustomEvent("keyPressed");
    
 
    this.enabledEvent = new YAHOO.util.CustomEvent("enabled");

  
    this.disabledEvent = new YAHOO.util.CustomEvent("disabled");

    if (typeof attachTo == 'string') {
        attachTo = document.getElementById(attachTo);
    }

    if (typeof handler == 'function') {
        keyEvent.subscribe(handler);
    } else {
        keyEvent.subscribe(handler.fn, handler.scope, handler.correctScope);
    }

  
    function handleKeyPress(e, obj) {
        if (! keyData.shift) {  
            keyData.shift = false; 
        }
        if (! keyData.alt) {    
            keyData.alt = false;
        }
        if (! keyData.ctrl) {
            keyData.ctrl = false;
        }

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

            if (keyData.keys instanceof Array) {
                for (var i=0;i<keyData.keys.length;i++) {
                    dataItem = keyData.keys[i];

                    if (dataItem == e.charCode ) {
                        keyEvent.fire(e.charCode, e);
                        break;
                    } else if (dataItem == e.keyCode) {
                        keyEvent.fire(e.keyCode, e);
                        break;
                    }
                }
            } else {
                dataItem = keyData.keys;
                if (dataItem == e.charCode ) {
                    keyEvent.fire(e.charCode, e);
                } else if (dataItem == e.keyCode) {
                    keyEvent.fire(e.keyCode, e);
                }
            }
        }
    }

    this.enable = function() {
        if (! this.enabled) {
            YAHOO.util.Event.addListener(attachTo, event, handleKeyPress);
            this.enabledEvent.fire(keyData);
        }
   
        this.enabled = true;
    };

  
    this.disable = function() {
        if (this.enabled) {
            YAHOO.util.Event.removeListener(attachTo, event, handleKeyPress);
            this.disabledEvent.fire(keyData);
        }
        this.enabled = false;
    };

 
    this.toString = function() {
        return "KeyListener [" + keyData.keys + "] " + attachTo.tagName + 
                (attachTo.id ? "[" + attachTo.id + "]" : "");
    };

};


YAHOO.util.KeyListener.KEYDOWN = "keydown";


YAHOO.util.KeyListener.KEYUP = "keyup";
YAHOO.register("event", YAHOO.util.Event, {version: "2.2.2", build: "204"});