if (document.images) 
  {
  img1 = new Image();
  img1.src = "graphics/gradient.gif";
/*
  img2 = new Image();
  img3 = new Image();
  img4 = new Image();
  img2.src = "graphics/newlogoleft.jpg"
  img3.src = "graphics/newlogo.jpg";
  img4.src = "graphics/newlogoright.jpg"
*/
  }