function toggle(id) {
	var a_name  = "a_" + id;
	var ul_name = "ul_" + id;
	var a_item  = document.getElementById(a_name);
	var ul_item = document.getElementById(ul_name);
	if (a_item.className == "down") {
		a_item.className = "right";
		ul_item.style.display = "none";
	} else {
		a_item.className = "down";
		ul_item.style.display = "";
	}
	return true;
}