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


function menu(obj){
	if(document.getElementById){
	var one = document.getElementById(obj);
	var two = document.getElementById("masterdiv").getElementsByTagName("span"); 
		if(one.style.display != "block"){ 
			for (var i=0; i<two.length; i++){
				if (two[i].className=="submenu") 
				two[i].style.display = "none";
			}
			one.style.display = "block";
		}else{
			one.style.display = "none";
		}
	}
}