// JavaScript Document
function displaySubMenu(li) {
			
     var subMenu = li.getElementsByTagName("ul")[0];
     subMenu.style.display = "block";
	 //subMenu.style.visibility = "visible";
}
function hideSubMenu(li) {
		
     var subMenu = li.getElementsByTagName("ul")[0];
	 subMenu.style.display = "none";
     //subMenu.style.visibility = "hidden";
}