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        }else if(Ext.isOpera ){
            /* Notes:
               Opera needs special treatment needed here because CSS rules are NOT QUITE
               available after DOMContentLoaded is raised.
            */

            //See if page is already loaded and all styleSheets are in place
            (DOC.readyState == COMPLETE && checkStyleSheets()) ||
                DOC.addEventListener(DOMCONTENTLOADED, OperaDOMContentLoaded, false);

        }else if (Ext.isWebKit){
            //Fallback for older Webkits without DOMCONTENTLOADED support
            checkReadyState();
        }
        // no matter what, make sure it fires on load
        E.on(WINDOW, "load", fireDocReady);
    }

    function createTargeted(h, o){
        return function(){
            var args = Ext.toArray(arguments);
            if(o.target == Ext.EventObject.setEvent(args[0]).target){
                h.apply(this, args);
            }
        };
    }

    function createBuffered(h, o, task){
        return function(e){
            // create new event object impl so new events don't wipe out properties
            task.delay(o.buffer, h, null, [new Ext.EventObjectImpl(e)]);
        };
    }

    function createSingle(h, el, ename, fn, scope){
        return function(e){
            Ext.EventManager.removeListener(el, ename, fn, scope);
            h(e);
        };
    }

    function createDelayed(h, o, fn){
        return function(e){
            var task = new Ext.util.DelayedTask(h);
            if(!fn.tasks) {
                fn.tasks = [];
            }
            fn.tasks.push(task);
            task.delay(o.delay || 10, h, null, [new Ext.EventObjectImpl(e)]);
        };
    }

    function listen(element, ename, opt, fn, scope){
        var o = (!opt || typeof opt == "boolean") ? {} : opt,
            el = Ext.getDom(element), task;

        fn = fn || o.fn;
        scope = scope || o.scope;

        if(!el){
            throw "Error listening for \"" + ename + '\". Element "' + element + '" doesn\'t exist.';
        }
        function h(e){
            // prevent errors while unload occurring
            if(!Ext){// !window[xname]){  ==> can't we do this?
                return;
            }
            e = Ext.EventObject.setEvent(e);
            var t;
            if (o.delegate) {
                if(!(t = e.getTarget(o.delegate, el))){
                    return;
                }
            } else {
                t = e.target;
            }
            if (o.stopEvent) {
                e.stopEvent();
            }
            if (o.preventDefault) {
               e.preventDefault();
            }
            if (o.stopPropagation) {
                e.stopPropagation();
            }
            if (o.normalized === false) {
                e = e.browserEvent;
            }

            fn.call(scope || el, e, t, o);
        }
        if(o.target){
            h = createTargeted(h, o);
        }
        if(o.delay){
            h = createDelayed(h, o, fn);
        }
        if(o.single){
            h = createSingle(h, el, ename, fn, scope);
        }
        if(o.buffer){
            task = new Ext.util.DelayedTask(h);
            h = createBuffered(h, o, task);
        }

        addListener(el, ename, fn, task, h, scope);
        return h;
    }

    var pub = {
<span id='Ext-EventManager-method-addListener'>        /**
</span>         * Appends an event handler to an element.  The shorthand version {@link #on} is equivalent.  Typically you will
         * use {@link Ext.Element#addListener} directly on an Element in favor of calling this version.
         * @param {String/HTMLElement} el The html element or id to assign the event handler to.
         * @param {String} eventName The name of the event to listen for.
         * @param {Function} handler The handler function the event invokes. This function is passed
         * the following parameters:&lt;ul&gt;
         * &lt;li&gt;evt : EventObject&lt;div class=&quot;sub-desc&quot;&gt;The {@link Ext.EventObject EventObject} describing the event.&lt;/div&gt;&lt;/li&gt;
         * &lt;li&gt;t : Element&lt;div class=&quot;sub-desc&quot;&gt;The {@link Ext.Element Element} which was the target of the event.
         * Note that this may be filtered by using the &lt;tt&gt;delegate&lt;/tt&gt; option.&lt;/div&gt;&lt;/li&gt;
         * &lt;li&gt;o : Object&lt;div class=&quot;sub-desc&quot;&gt;The options object from the addListener call.&lt;/div&gt;&lt;/li&gt;