function getposOffset(overlay, offsettype){
		var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
		var parentEl=overlay.offsetParent;
		while (parentEl!=null){
			totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
			parentEl=parentEl.offsetParent;
		}
		return totaloffset;
	}
	
	function overlay(curobj, subobj){
		if (document.getElementById){
			var subobj=document.getElementById(subobj)
		
			/*subobj.style.top=145+"px"*/
			subobj.style.left=getposOffset(curobj, "left")-16+"px";
			subobj.style.display="inline-block";
			return false
		}
		else
		return true
	}
	
	function overlayclose(subobj){
		document.getElementById(subobj).style.display="none"
	}