if (document.images) {
  oneOff = new Image()
  oneOff.src = "images/one_off.gif"
  twoOff = new Image()
  twoOff.src = "images/two_off.gif"
  threeOff = new Image()
  threeOff.src = "images/three_off.gif"
  fourOff = new Image()
  fourOff.src = "images/four_off.gif"
  fiveOff = new Image()
  fiveOff.src = "images/five_off.gif"
  sixOff = new Image()
  sixOff.src = "images/six_off.gif"
  sevenOff = new Image()
  sevenOff.src = "images/seven_off.gif"
  eightOff = new Image()
  eightOff.src = "images/eight_off.gif"
  nineOff = new Image()
  nineOff.src = "images/nine_off.gif"
  tenOff = new Image()
  tenOff.src = "images/ten_off.gif"
  
  oneOver = new Image()
  oneOver.src = "images/one_on.gif"
  twoOver = new Image()
  twoOver.src = "images/two_on.gif"
  threeOver = new Image()
  threeOver.src = "images/three_on.gif"
  fourOver = new Image()
  fourOver.src = "images/four_on.gif"
  fiveOver = new Image()
  fiveOver.src = "images/five_on.gif"
  sixOver = new Image()
  sixOver.src = "images/six_on.gif"
  sevenOver = new Image()
  sevenOver.src = "images/seven_on.gif"
  eightOver = new Image()
  eightOver.src = "images/eight_on.gif"
  nineOver = new Image()
  nineOver.src = "images/nine_on.gif"
  tenOver = new Image()
  tenOver.src = "images/ten_on.gif"
  
  oneOut = new Image()
  oneOut.src = "images/one_on.gif"
  twoOut = new Image()
  twoOut.src = "images/two_on.gif"
  threeOut = new Image()
  threeOut.src = "images/three_on.gif"
  fourOut = new Image()
  fourOut.src = "images/four_on.gif"
  fiveOut = new Image()
  fiveOut.src = "images/five_on.gif"
  sixOut = new Image()
  sixOut.src = "images/six_on.gif"
  sevenOut = new Image()
  sevenOut.src = "images/seven_on.gif" 
  eightOut = new Image()
  eightOut.src = "images/eight_on.gif"
  nineOut = new Image()
  nineOut.src = "images/nine_on.gif"
  tenOut = new Image()
  tenOut.src = "images/ten_on.gif" 
 
}
function changeImage(name,image) {
  if (document.images[name]) document.images[name].src = eval(image+'.src');
}
function menuOnHide(sender) {
  changeImage(sender.Trigger,sender.Trigger+"Off");
}
function menuOnMouseOver(sender) {
  changeImage(sender.Trigger,sender.Trigger+"Out");
}
function navOver(name,event) {
  changeImage(name,name+"Over");
  
}
function navOut(name,event) {

 changeImage(name,name+"Off");

}