function displaySubMenu(li) { 
	var subMenu = li.getElementsByTagName("ul")[0]; 
	try{
		subMenu.style.display = "block"; 
		subMenu.style.position="absolute";
		subMenu.style.top="32px";
		subMenu.style.left="0px";
	}catch(err){}
} 
function hideSubMenu(li) { 
	var subMenu = li.getElementsByTagName("ul")[0]; 
	try{
		subMenu.style.display = "none"; 
	}catch(err){}
}