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("mdiv").getElementsByTagName("span");
	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";
	}
}
}