if(document.childNodes){
	  document.writeln('<style type="text/css">');
	  document.writeln('.submenu { display: none; }');
	  document.writeln('</style>');
	}
	 
	function switchDisplay(submenuId){
		if(document.childNodes){
		var idDisplay = document.getElementById(submenuId).style.display;
	 
		var submenus = document.getElementById("sidemenu").getElementsByTagName("ul");
	 
		for(i=0; i<submenus.length; i++){
			if(submenus[i].className=="submenu")
				submenus[i].style.display="none";
		}
	 
		if (idDisplay=="block"){
			document.getElementById(submenuId).style.display="none";
			setCookie("showSub", 0, true);
		} else {
			document.getElementById(submenuId).style.display="block";
			setCookie("showSub", submenuId, false);
		}
		}
	}
	 
	function setCookie(cookieName, cookieValue, toDelete){
		document.cookie = escape(cookieName) + "=" + escape(cookieValue) + ";" + ((toDelete) ? "expires=Tue, 01 Jan 1980 00:00:00 GMT;" : "");
	}
	 
	function getCookie(cookieName){
		var re = new RegExp(escape(cookieName)+"=([^;]+)")
		document.cookie.match(re);
		return (RegExp.$1) ? unescape(RegExp.$1) : false;
	}
	 
	window.onload = function(){
		if(getCookie("showSub") && document.getElementById(getCookie("showSub"))){
				document.getElementById(getCookie("showSub")).style.display = "block";
		}
	}