function toggle(elm) {
	var newDisplay = "none";	
	elm.src = 'img/folder-closed.gif';
	var e = elm.nextSibling;
	
	while (e != null) {
		if (e.tagName == "OL" || e.tagName == "ol") {
			if (e.style.display == "none") {
				newDisplay = "block";
				elm.src = 'img/folder-open.gif';
			}
			break;
		}
		e = e.nextSibling;
 	}
	
	while (e != null) {
		if (e.tagName == "OL" || e.tagName == "ol") {
			e.style.display = newDisplay;
		}
		e = e.nextSibling;
	}
}


function collapseAll() {
	var lists = document.getElementsByTagName("ol");
	for (var i = 0; i < lists.length; i++) 
		lists[i].style.display = "none";
	e = document.getElementById("root1");
	e.style.display = "block";
	e = document.getElementById("root2");
	e.style.display = "block";
}