menu_button_norm = new Image; menu_button_norm.src = '../images/menu_button_norm.gif';
menu_button_roll = new Image; menu_button_roll.src = '../images/menu_button_roll.gif';

var menu_on = "no";
var menu_on_id = "";
      
function showmenu(menuname) {
	if (menu_on == "yes" && menu_on_id == menuname) {
		window.clearTimeout(menutimeout);
	}
	if (menu_on == "yes" && menu_on_id != menuname) {
		window.clearTimeout(menutimeout);
		hidemenu(menu_on_id);
	}
	document.getElementById(menuname).style.visibility = "visible";
	document.getElementById(menuname+"_head").style.backgroundPosition = "9px 13px";
	menu_on = "yes";
	menu_on_id = menuname;
}
function sethidetime(menuname) {
	menutimeout = window.setTimeout("hidemenu('" + menuname + "');",500);
}
function hidemenu(menuname) {
	document.getElementById(menuname).style.visibility = 'hidden';
	document.getElementById(menuname+"_head").style.backgroundPosition = "0px 200px";
	menu_on = "no";
}