// Cross-browser event handling for IE5+, NS6+ and Mozilla/Gecko
	// By Scott Andrew
		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;
			}
		   }