function highlight(e) {
	var r = null;
	if (e.parentNode && e.parentNode.parentNode) {
	    r = e.parentNode.parentNode;
	}
	else if (e.parentElement && e.parentElement.parentElement) {
	    r = e.parentElement.parentElement;
	}
	if (r) {
	    if (r.className == "selected") {
		r.className = "unselected";
	    }
	    else if (r.className == "unselected") {
		r.className = "selected";
	    }
	}
}