// JavaScript Document
var cache1=new Image();
cache1.src="pictures/menu_ac_01.gif"; 
var cache2=new Image(); 
cache2.src="pictures/menu_ac_02.gif";
var cache3=new Image();
cache3.src="pictures/menu_ac_03.gif"; 
var cache4=new Image(); 
cache4.src="pictures/menu_ac_04.gif";