if (document.getElementById) {
	document.write ("<style type='text/css'>");
  document.write (".submenu {display: none;}");
  document.write ("</style>");
}
function resetMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("nav").getElementsByTagName("ul");
		if(el.style.display != "block"){
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="submenu")
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}