var isIE = !window.opera && navigator.userAgent.indexOf('MSIE') != -1;

//portable add event listener
function addEvent(elm, evType, fn, useCapture)
{
	if(elm.addEventListener)
	{
		elm.addEventListener(evType, fn, useCapture);
		return true;
	}
	else if (elm.attachEvent)
	{
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	}
	else
	{
		elm['on' + evType] = fn;
	}
}

function cancelClick(e)
{
	if (window.event && window.event.returnValue)
	{
		window.event.returnValue = false;
	}
	if (e && e.preventDefault)
	{
		e.preventDefault();
	}
	
	return false;
}

function getEvent(e)
{
	//sniff out the object triggering the event
	if(window.event && window.event.srcElement)	var e1 = window.event.srcElement;
	if(e && e.target) var e1 = e.target;
	if (!e1) return false;	
	return e1;
}

function newWindow(e)
{
	var e1 = getEvent(e);
	window.open(e1.href);
}

function loadScript(url)
{
   var e = document.createElement("script");
   e.src = url;
   e.type="text/javascript";
   document.getElementsByTagName("head")[0].appendChild(e);
}