function PreloadImages() {
  if(document.images) { 
    if(!document.LoadedImages) document.LoadedImages = new Array();
    var i;
    var j = document.LoadedImages.length; 
    for(i = 0; i < PreloadImages.arguments.length; i++)
    if (PreloadImages.arguments[i].indexOf("#") != 0){ 
      document.LoadedImages[j] = new Image; 
      document.LoadedImages[j++].src = PreloadImages.arguments[i];
    }
  }
}

function RollOver() {
  if(document.images) { 
    document.images[RollOver.arguments[0]].src = RollOver.arguments[1];
  }
}