function swapImgRestore() 
{
  if(document.swapImgData != null)
    for(var i = 0; i <(document.swapImgData.length - 1); i += 2)
      document.swapImgData[i].src = document.swapImgData[i+1];
}

function preloadImages() 
{
  if(document.images) 
  {
    var imgFiles = preloadImages.arguments;
    if(document.preloadArray == null) document.preloadArray = new Array();
    var i = document.preloadArray.length;
    with(document) for (var j = 0; j < imgFiles.length; j++) if (imgFiles[j].charAt(0) != "#")
    {
      preloadArray[i] = new Image;
      preloadArray[i++].src = imgFiles[j];
   }
  }
}

function swapImage() 
{
  var i, j = 0, objStr, obj, swapArray = new Array, oldArray = document.swapImgData;
  for(i = 0; i < (swapImage.arguments.length - 2); i += 3) 
  {
    objStr = swapImage.arguments[(navigator.appName == 'Netscape') ? i : i + 1];
    if((objStr.indexOf('document.layers[') == 0 && document.layers == null) || (objStr.indexOf('document.all[') == 0 && document.all == null))
      objStr = 'document' + objStr.substring(objStr.lastIndexOf('.'), objStr.length);
    obj = eval(objStr);
    if(obj != null) 
    {
      swapArray[j++] = obj;
      swapArray[j++] = (oldArray==null || oldArray[j - 1] != obj) ? obj.src:oldArray[j];
      obj.src = swapImage.arguments[i + 2];
    }
   }
  document.swapImgData = swapArray;
}