function preloadImages()
{
  var preload = new Array();
  var i, a=preloadImages.arguments;
  for(i=0; i < a.length; i++)
  {
    preload [i]=new Image;
    preload [i++].src=a[i];
  }
}
function locateObject(name, d)
{
  var i,x;
  if(!d) d=document;

  x=d[name];
  for(i=0; !x && d.layers && i< d.layers.length; i++)
    x=locateObject(name, d.layers[i].document);
  return x;
}
function ImageSwap( Name, URL)
{
  var img;
  img = locateObject(Name);
  img.src = URL;
}