// ÏÔʾÒþ²Ø×ó²à²Ëµ¥
function showsubmenu(sid)
{ 
objdiv = document.getElementById("submenu"+sid);
if(objdiv.style.display == "none"){
	objdiv.style.display = "block";	
	}
else{
	objdiv.style.display = "none";
	}
}