function collapseAll(id, tag) {
	obj = document.getElementById(id).getElementsByTagName(tag);
	for(i=0; i<obj.length; i++) {
		if (obj[i].style.display == "block") {
			obj[i].style.display = "none";
		}
	}
}

function expand(obj) {
	collapseAll("menu", "ul");
	t = obj.nextSibling.nextSibling;
	t.style.display = (t.style.display == "none")? "block" : "none";
	return false;
}