// based on John Resig & Dean Edwards scripts.

/***********************************************
Requires: browser.js

************************************************/

// If IE is used, use the excellent hack by Matthias Miller
// http://www.outofhanwell.com/blog/index.php?title=the_window_onload_problem_revisited

document.onDOMContentLoaded = function(event) {};
var DOMContentLoadedHandler = function() { document.onDOMContentLoaded({type: 'DOMContentLoaded'});};



if(browser.msie) 
{
	// Only works if you document.write() it
	document.write("<scr" + "ipt id=__ie_init defer=true " + 
		"src=//:><\/script>");

	// Use the defer script hack
	var script = document.getElementById("__ie_init");
	
	if (script) 
		script.onreadystatechange = function() {
			if (this.readyState != "complete") return;
			//removeEvent(window, 'load', DOMContentLoadedHandler);
			DOMContentLoadedHandler();
		};

	// Clear from memory
	script = null;

// If Safari  is used
} 
else if (browser.safari)
{
	// Continually check to see if the document.readyState is valid
	var safariTimer = setInterval(function(){
		// loaded and complete are both valid states
		if ( document.readyState == "loaded" || document.readyState == "complete" ) 
		{

			// If either one are found, remove the timer
			clearInterval(safariTimer);
			safariTimer = null;

			// and execute any waiting functions
			//removeEvent(window, 'load', DOMContentLoadedHandler);
			DOMContentLoadedHandler();
		}
	}, 10); 
}
// A fallback to window.onload, that will always work
//if(!browser.safari)
//	addEvent(window, 'load', DOMContentLoadedHandler);
// Problem when in frameset. 





function addEvent(element, type, handler) {
	if (element.addEventListener && !browser.safari) {
		element.addEventListener(type, handler, false);
	} else {
		// assign each event handler a unique ID
		if (!handler.$$guid) handler.$$guid = addEvent.guid++;
		// create a hash table of event types for the element
		if (!element.events) element.events = {};
		// create a hash table of event handlers for each element/event pair
		var handlers = element.events[type];
		if (!handlers) {
			handlers = element.events[type] = {};
			// store the existing event handler (if there is one)
			if (element["on" + type]) {
				handlers[0] = element["on" + type];
			}
		}
		// store the event handler in the hash table
		handlers[handler.$$guid] = handler;
		// assign a global event handler to do all the work
		element["on" + type] = handleEvent;
	}
};
// a counter used to create unique IDs
addEvent.guid = 1;

function removeEvent(element, type, handler) {
	if (element.removeEventListener && !browser.safari) {
		element.removeEventListener(type, handler, false);
	} else {
		// delete the event handler from the hash table
		if (element.events && element.events[type]) {
			delete element.events[type][handler.$$guid];
		}
	}
};

function handleEvent(event) {
	var returnValue = true;
	// grab the event object (IE uses a global event object)
	event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
	
	/*	BUG if used with json.js in the same page
	var handlers = this.events[event.type];
    for (var i in handlers) {
        this.$$handleEvent = handlers[i];
        if (this.$$handleEvent(event) === false) {
            returnValue = false;
        }
    }
	*/
	// patch 
	for (var i in this.events[event.type]) {
		if (this.events[event.type][i](event) === false) {
			returnValue = false;
		}
	}
	
	return returnValue;
};

function fixEvent(event) {
	// add W3C standard event methods
	if(event.srcElement)
		event.target = event.srcElement;
	event.preventDefault = fixEvent.preventDefault;
	event.stopPropagation = fixEvent.stopPropagation;
	return event;
};
fixEvent.preventDefault = function() {
	this.returnValue = false;
};
fixEvent.stopPropagation = function() {
	this.cancelBubble = true;
};