function tf(o) {
	if (o==null) return;

	var target = o.parentNode.getElementsByTagName("SPAN");
	for(var i=0;i<target.length;i++){
		if (target[i].display==null) {
			target[i].style.display = "block";
			target[i].display = true;
			if(o.parentNode.firstChild.tagName=="A"){
				o.parentNode.firstChild.firstChild.nextSibling.src = "images/folder-open.gif";
			}
			document.getElementById("copyright").style.display="none";
		} else {
			target[i].style.display = "none";
			target[i].display = null;
			if(o.parentNode.firstChild.tagName=="A"){
				o.parentNode.firstChild.firstChild.nextSibling.src = "images/folder-closed.gif";
			}
			document.getElementById("copyright").style.display="block";
		}
	}
}



function tf_all(){
	var arrayofobjs = document.getElementsByTagName("SPAN");


	for (var i=0;i<arrayofobjs.length;i++) {
		if (arrayofobjs[i].display==null || arrayofobjs[i].display) {
			arrayofobjs[i].style.display="block";
			arrayofobjs[i].display = true;
			arrayofobjs[i].parentNode.firstChild.firstChild.src="templates/images/menu_/folder-open.gif";
		}
	}
}