IMG=new Array();
IMG[0] = new Image; IMG[0].src = "/img/nolines_plus.gif";
IMG[1] = new Image; IMG[1].src = "/img/nolines_minus.gif";
//IMG[0]="/img/nolines_plus.gif";
//IMG[1]="/img/nolines_minus.gif";

function treeMenu(id) {
	var menu = "menu"+id;
	if(document.getElementById(menu) != null) {
		var disp = document.getElementById(menu).style.display;

		if(disp != "none" || disp == "") {
			document.getElementById(menu).style.display = "none";
			document.images["icon"+id].src=IMG[0].src;
		}
		else {
			document.getElementById(menu).style.display = "block";
			document.images["icon"+id].src=IMG[1].src;
		}
	}
}