var currSub
function showSub(id, obj){
	currMenu = obj
	if (currSub){
		currSub.style.visibility = "hidden";
	}
	var sub = document.getElementById(id);
	sub.style.visibility = "visible";
	currSub = sub
}

function qCloseSub(id){
	if (currSub){
		currSub.style.visibility = "hidden";
	}
}