menuList = ["lay0","lay1"];
function pulldownmenu(mObj)
{
	pdMENU = getMenuObj(mObj);
	flag = pdMENU.style.display;
	for (i=0; i<menuList.length; i++)
	{
		pdMENU = getMenuObj(menuList[i]);
		pdMENU.style.display = "none";
	}
	pdMENU = getMenuObj(mObj);
	if (flag == "block") pdMENU.style.display = "none"; else pdMENU.style.display = "block";
}
function getMenuObj(obj)
{
	if (document.all) return document.all(obj);
	if (document.getElementById) return document.getElementById(obj);
	return obj;
}