if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img1.src = "images/home.gif";
   img2.src = "images/register.gif";
   img3.src = "images/rule.gif";  
   img4.src = "images/ruleblktop.jpg";
   img5.src = "images/rulebottomleft3.jpg";
   img6.src = "images/rulebottommain3.jpg";  
  
  
}