if (document.getElementById){ 
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("masterdiv").getElementsByTagName("tr");
		for (var i=0; i<ar.length; i++){
			if (ar[i].className=="submenu") {
				ar[i].style.display = "none";
			}
		}
		el.style.display = "block";

	}
}