if (document.images) {
  bullet1_f2 = new Image(31 ,28); bullet1_f2.src = "i/bullet1_f2.gif";
  bullet1_f1 = new Image(31 ,28); bullet1_f1.src = "i/bullet1.gif";
  blt5_f2 = new Image(31 ,27); blt5_f2.src = "i/blt5_f2.gif";
  blt5_f1 = new Image(31 ,27); blt5_f1.src = "i/blt5.gif";
  blt7_f2 = new Image(31 ,30); blt7_f2.src = "i/blt7_f2.gif";
  blt7_f1 = new Image(31 ,30); blt7_f1.src = "i/blt7.gif";
  }