if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img8 = new Image();
   img9 = new Image();
   img10 = new Image();
   img11 = new Image();
   img12 = new Image();
   img1.src = "images/mback.png";
   img2.src = "images/gback.png";
   img3.src = "images/botcorntrans.png";
   img4.src = "images/botgrad.png";
   img5.src = "images/bottrans.png";
   img6.src = "images/corner.png";
   img7.src = "images/leftbot.png";
   img8.src = "images/lefttoptrans.png";
   img9.src = "images/logo.png";
   img10.src = "images/topgrad.png";
   img11.src = "images/topgradtrans.png";
   img12.src = "images/toptrans.png";
}