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);

    } 


    
    this.lastError = null;
};


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() {

        this.lastError = null;

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

        if (!len && this.silent) {
            return true;
        }

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

        if (!this.silent) {
        }

        
        var subs = this.subscribers.slice(), throwErrors = YAHOO.util.Event.throwErrors;

        for (i=0; i<len; ++i) {
            var s = subs[i];
            if (!s) {
                rebuild=true;
            } else {
                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];
                    }

                    try {
                        ret = s.fn.call(scope, param, s.obj);
                    } catch(e) {
                        this.lastError = e;
                        // errors.push(e);
                        if (throwErrors) {
                            throw e;
                        }
                    }
                } else {
                    try {
                        ret = s.fn.call(scope, this.type, args, s.obj);
                    } catch(ex) {
                        this.lastError = ex;
                        if (throwErrors) {
                            throw ex;
                        }
                    }
                }

                if (false === ret) {
                    if (!this.silent) {
                    }

                    break;
                    // return false;
                }
            }
        }

        return (ret !== false);
    },

    
    unsubscribeAll: function() {
        for (var i=this.subscribers.length-1; i>-1; i--) {
            this._delete(i);
        }

        this.subscribers=[];

        return i;
    },

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

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

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

    }
};

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


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

    
    this.fn = fn;

    this.obj = YAHOO.lang.isUndefined(obj) ? null : obj;
   
    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);
    }
};

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 listeners = [];
        
        var unloadListeners = [];

        var legacyEvents = [];
       
        var legacyHandlers = [];

        var retryCount = 0;

        var onAvailStack = [];

        var legacyMap = [];

        var counter = 0;
        
       
        var webkitKeymap = {
            63232: 38, // up
            63233: 40, // down
            63234: 37, // left
            63235: 39, // right
            63276: 33, // page up
            63277: 34, // page down
            25: 9      // SHIFT-TAB (Safari provides a different key code in
                       // this case, even though the shiftKey modifier is set)
        };
        
        // String constants used by the addFocusListener and removeFocusListener methods
        var _FOCUS = YAHOO.env.ua.ie ? "focusin" : "focus";
        var _BLUR = YAHOO.env.ua.ie ? "focusout" : "blur";      

        return {

            
            POLL_RETRYS: 2000,
            
            POLL_INTERVAL: 20,
           
            EL: 0,

            TYPE: 1,
           
            FN: 2,
         
            WFN: 3,

            UNLOAD_OBJ: 3,

            ADJ_SCOPE: 4,

            OBJ: 5,

            OVERRIDE: 6,

            CAPTURE: 7,

            lastError: null,

            isSafari: YAHOO.env.ua.webkit,
            
            webkit: YAHOO.env.ua.webkit,
           
            isIE: YAHOO.env.ua.ie,

            _interval: null,

             _dri: null,

            DOMReady: false,

            throwErrors: false,

            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, checkContent) {

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

                for (var i=0; i<a.length; i=i+1) {
                    onAvailStack.push({id:         a[i], 
                                       fn:         p_fn, 
                                       obj:        p_obj, 
                                       override:   p_override, 
                                       checkReady: checkContent });
                }

                retryCount = this.POLL_RETRYS;

                this.startInterval();
            },

            onContentReady: function(p_id, p_fn, p_obj, p_override) {
                this.onAvailable(p_id, p_fn, p_obj, p_override, true);
            },

            onDOMReady: function(p_fn, p_obj, p_override) {
                if (this.DOMReady) {
                    setTimeout(function() {
                        var s = window;
                        if (p_override) {
                            if (p_override === true) {
                                s = p_obj;
                            } else {
                                s = p_override;
                            }
                        }
                        p_fn.call(s, "DOMReady", [], p_obj);
                    }, 0);
                } else {
                    this.DOMReadyEvent.subscribe(p_fn, p_obj, p_override);
                }
            },


            _addListener: function(el, sType, fn, obj, override, capture) {

                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._addListener(el[i], 
                                       sType, 
                                       fn, 
                                       obj, 
                                       override, 
                                       capture) && ok;
                    }
                    return ok;

                } else if (YAHOO.lang.isString(el)) {
                    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._addListener(el, sType, fn, obj, override, capture);
                        });

                        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, capture];
                    return true;
                }


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

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

                var li = [el, sType, fn, wrappedFn, scope, obj, override, capture];
                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, capture);
                    } 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, capture);
                        return false;
                    }
                }

                return true;
                
            },


            
            addListener: function (el, sType, fn, obj, override) {
                return this._addListener(el, sType, fn, obj, override, false);
            },

           
            addFocusListener: function (el, fn, obj, override) {
                return this._addListener(el, _FOCUS, fn, obj, override, true);
            },          


            removeFocusListener: function (el, fn) { 
                return this._removeListener(el, _FOCUS, fn, true);
            },

            addBlurListener: function (el, fn, obj, override) {
                return this._addListener(el, _BLUR, fn, obj, override, true);
            },          

            removeBlurListener: function (el, fn) { 
            
                return this._removeListener(el, _BLUR, fn, true);
            
            },

            fireLegacyEvent: function(e, legacyIndex) {
                var ok=true, le, lh, li, scope, ret;
                
                lh = legacyHandlers[legacyIndex].slice();
                for (var i=0, len=lh.length; i<len; ++i) {
                // for (var i in lh.length) {
                    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) {
return (this.webkit && this.webkit < 419 && ("click"==sType || "dblclick"==sType));
            },
                    
           
            _removeListener: function(el, sType, fn, capture) {
                var i, len, li;

                // 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=el.length-1; i>-1; i--) {
                        ok = ( this._removeListener(el[i], sType, fn, capture) && ok );
                    }
                    return ok;
                }

                if (!fn || !fn.call) {
                    //return false;
                    return this.purgeElement(el, false, sType);
                }

                if ("unload" == sType) {

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

                    return false;
                }

                var cacheItem = null;

                // The index is a hidden parameter; needed to remove it from
                // the method signature because it was tempting users to
                // try and take advantage of it, which is not possible.
                var index = arguments[4];
  
                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) {
                        // for (i in llist.length) {
                            li = llist[i];
                            if (li && 
                                li[this.EL] == el && 
                                li[this.TYPE] == sType && 
                                li[this.FN] == fn) {
                                    llist.splice(i, 1);
                                    // llist[i]=null;
                                    break;
                            }
                        }
                    }

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

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

                return true;

            },


            
            removeListener: function(el, sType, fn) {

				return this._removeListener(el, sType, fn, false);

            },


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

            
            resolveTextNode: function(n) {
                try {
                    if (n && 3 == n.nodeType) {
                        return n.parentNode;
                    }
                } catch(e) { }

                return n;
            },

           
            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, boundEl) {
                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) {
                var code = ev.keyCode || ev.charCode || 0;

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

            _getCacheIndex: function(el, sType, fn) {
                for (var i=0, l=listeners.length; i<l; i=i+1) {
                    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) {
                try {
                    return ( o                     && // o is something
                             typeof o !== "string" && // o is not a string
                             o.length              && // o is indexed
                             !o.tagName            && // o is not an HTML element
                             !o.alert              && // o is not a window
                             typeof o[0] !== "undefined" );
                } catch(ex) {
                    return false;
                }

            },

            elCache: {},

            getEl: function(id) {
                return (typeof id === "string") ? document.getElementById(id) : 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();

                    EU._tryPreloadAttach();

                }
            },

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

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

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

            
            _tryPreloadAttach: function() {

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

                if (this.locked) {
                    return;
                }

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

                this.locked = true;


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

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


                retryCount--;

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

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

                this.locked = false;

            },

            
            purgeElement: function(el, recurse, sType) {
                var oEl = (YAHOO.lang.isString(el)) ? this.getEl(el) : el;
                var elListeners = this.getListeners(oEl, sType), i, len;
                if (elListeners) {
                    for (i=elListeners.length-1; i>-1; i--) {
                        var l = elListeners[i];
                        this._removeListener(oEl, l.type, l.fn, l.capture);
                    }
                }

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

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

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

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

            
            _unload: function(e) {

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

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

                unloadListeners = null;

                // Remove listeners to handle IE memory leaks
                //if (YAHOO.env.ua.ie && listeners && listeners.length > 0) {
                
                // 2.5.0 listeners are removed for all browsers again.  FireFox preserves
                // at least some listeners between page refreshes, potentially causing
                // errors during page load (mouseover listeners firing before they
                // should if the user moves the mouse at the correct moment).
                if (listeners) {
                    for (j=listeners.length-1; j>-1; j--) {
                        l = listeners[j];
                        if (l) {
                            EU._removeListener(l[EU.EL], l[EU.TYPE], l[EU.FN], l[EU.CAPTURE], j);
                        } 
                    }
                    l=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;
       
        EU.onFocus = EU.addFocusListener;

        EU.onBlur = EU.addBlurListener;

        if (EU.isIE) {

            // Process onAvailable/onContentReady items when the 
            // DOM is ready.
            YAHOO.util.Event.onDOMReady(
                    YAHOO.util.Event._tryPreloadAttach,
                    YAHOO.util.Event, true);
            
            var n = document.createElement('p');  

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

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

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

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

            EU._simpleAdd(document, "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 evts = this.__yui_events;
        if (p_type) {
            var ce = evts[p_type];
            if (ce) {
                return ce.unsubscribe(p_fn, p_obj);
            }
        } else {
            var ret = true;
            for (var i in evts) {
                if (YAHOO.lang.hasOwnProperty(evts, i)) {
                    ret = ret && evts[i].unsubscribe(p_fn, p_obj);
                }
            }
            return ret;
        }

        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);

            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) {
            return null;
        }

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

    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;

            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.util.KeyListener.KEY = {
    ALT          : 18,
    BACK_SPACE   : 8,
    CAPS_LOCK    : 20,
    CONTROL      : 17,
    DELETE       : 46,
    DOWN         : 40,
    END          : 35,
    ENTER        : 13,
    ESCAPE       : 27,
    HOME         : 36,
    LEFT         : 37,
    META         : 224,
    NUM_LOCK     : 144,
    PAGE_DOWN    : 34,
    PAGE_UP      : 33, 
    PAUSE        : 19,
    PRINTSCREEN  : 44,
    RIGHT        : 39,
    SCROLL_LOCK  : 145,
    SHIFT        : 16,
    SPACE        : 32,
    TAB          : 9,
    UP           : 38
};
YAHOO.register("event", YAHOO.util.Event, {version: "2.6.0", build: "1321"});