// Code from John Resig's wining submission to the QuirksMode.org addevent recoding contest
// Links:
//     http://ejohn.org/projects/flexible-javascript-events/
//     http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html


function addEvent( obj, type, fn )
{
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function removeEvent( obj, type, fn )
{
	if (obj.removeEventListener)
		obj.removeEventListener( type, fn, false );
	else if (obj.detachEvent) {
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}


// Code from QuirksMode.org
// http://www.quirksmode.org/js/events_properties.html
// http://www.quirksmode.org/js/events_order.html

function getEventSource(e,findNode)
{
	var source;
	
	// Resolve event object
	if (!e) var e = window.event;
	e.cancelBubble = true;
	if (e.stopPropagation) e.stopPropagation();
	
	// Resolve event source (target element)
	if (e.target) source = e.target;
	else if (e.srcElement) source = e.srcElement;
	if (source.nodeType == 3) // defeat Safari bug
		source = source.parentNode;
	
	// Climb to desired node
	while (findNode && source.nodeName != findNode)
		source = source.parentNode;
	
	// Return event source (target element)
	return(source);
}