function getElem(elem){
		if(document.getElementById && !document.all || document.layers) obj = document.getElementById(elem);
		else if(document.all) obj = document.all(elem);
		return obj;
	}

	function evtLtn(elm, type, func, useCapture){
		if(!elm) return false;
		if(!useCapture) useCapture = false;
		
		if(elm.addEventListener) elm.addEventListener(type, func, false);
		else if(elm.attachEvent) elm.attachEvent('on'+type, func);
		else return false;
		
		return true;
	}