var timeOutID;

function showSub(obj){
	var object; 
	object = document.getElementById(obj);

	clearTimeout(timeOutID);
	hideSubLayers();

	object.style.visibility = "visible";
}

function hideSubs(){
	//document.getElementById('debug').innerHTML="Mouse Out";
	timeOutID = setTimeout("hideSubLayers()",100);
}

function hideSubLayers(){
	document.getElementById('pl').style.visibility = "hidden";
	document.getElementById('as').style.visibility = "hidden";
}