function preloadImages(images /* comma separated strings - e.g. "img1", "img2" */)
{
  var ImageList = new Array(images);
  var OrphandImages = new Array(); // are not displayed anywhere; Array might be obsolete
  
  for(var i = 0; i < ImageList.length; i++)
  {
    OrphandImages[i] = new Image();
    OrphandImages[i].src = ImageList[i];
  }
}