function sitemap() {
	var tree = document.getElementById("sitemap");
	var lists = [ tree ];
	for (var i = 0; i < tree.getElementsByTagName("ul").length; i++) lists[lists.length] = tree.getElementsByTagName("ul")[i];
	for (var i = 0; i < lists.length; i++) {
		var item = lists[i].lastChild;
		while (!item.tagName || item.tagName.toLowerCase() != "li") item = item.previousSibling; item.className += " last";
	}
}