function init_nav() {
	for (i=0; i < document.getElementsByTagName('ul').length; i++) {
		if (document.getElementsByTagName('ul')[i].className == "opened") {
			id = document.getElementsByTagName('ul')[i].parentNode.id;
			toggle(id, false);
		}
	}
	if (window.name.length > 0) {
		load_nav();
	}
}

function toggle(id, save) {
	ul = "ul_" + id;
	ul_element = document.getElementById(ul);
	
	if (ul_element) {
		if (ul_element.className == 'closed') {
			ul_element.className = "opened";
		}
		else {
			ul_element.className = "closed";
		}
	}
	if (save == true) save_nav();
}

function testIt(id) {
	ul = "ul_" + id;
	ul_element = document.getElementById(ul);
	
	a = "a_" + id;
	a_element = document.getElementById(a);
	
	
	if (ul_element.className == 'opened') a_element.title = "";
	else a_element.title = "Weitere Infos durch Mausklick!";			
}

function testIt_weg(id) {
	a = document.getElementById(id);
	a.title = "";
}

function save_nav() {
	var save="";
	for (var i=0; i < document.getElementsByTagName('ul').length; i++) {
		if ((document.getElementsByTagName('ul')[i].className == "opened" || document.getElementsByTagName('ul')[i].className == "closed") && document.getElementsByTagName('ul')[i].id != 'root') {
			save = save + document.getElementsByTagName('ul')[i].id + "=" + document.getElementsByTagName('ul')[i].className + ",";
		}
	}
	if (save.lastIndexOf(",") > 0) {
		save = save.substring(0, save.lastIndexOf(","));
	}
	window.name = save;
}

function load_nav() {
	var items = window.name.split(",");
	if (items.length > 0) {
		for (var i=0; i < items.length; i++) {
			id_value = items[i].split("=");
			if (id_value.length == 2) {
				id = id_value[0];
				value = id_value[1];
				document.getElementById(id).className = value;
			}
		}
	}
}