function toogle_display(div_name) {
		var new_display = (document.all[div_name].style.display == "block") ? "none" : "block";
		var new_plus_img= (new_display == "none") ? "plus.gif" : "less.gif";
		document.all[div_name].style.display = new_display;
		document.all["plus_" + div_name].src = "" + new_plus_img;
	}

	function display_show(div_name, div_parent) {
		var new_display = "block";
		var new_plus_img= (new_display == "none") ? "plus.gif" : "less.gif";
		document.all[div_name].style.display = new_display;
		document.all["plus_" + div_name].src = "" + new_plus_img;
	}
	
	function change_color(l_id, new_color) {
		try {
			document.all[l_id].style.background = new_color;
		} catch(e) {
			// nothing here
		}
	}