var openCount = 0;

function openMenu(){
	if(openCount == 0)
		document.getElementById('submenu').style.display = "";
	openCount++;
}
function closeMenu(){
	setTimeout('closeMenuAction()', 500);
}
function closeMenuAction(){
	openCount--;
	if(openCount == 0)
		document.getElementById('submenu').style.display = "none";
}