function addLoadListener(fn)  {
	if(typeof window.addEventListener != 'undefined')  {
		window.addEventListener('load', fn, false);
	}
	else if(typeof document.addEventListener != 'undefined')  {
		document.addEventListener('load', fn, false);
		else if(typeof window.attachEvent != 'undefined')   {
			window.attachEvent('onload', fn);
		} else {
			var oldfn = window.onload;
			if(typeof window.onload != 'function') {
				window.onload = fn;
			} else {
				window.onload = function() {oldfn(); fn();};
			}
		}
	}
}