function multiPreload()
{
  var imagenames = multiPreload.arguments;
  document.imageArray = new Array(imagenames.length);
  for(var i=0; i<imagenames.length; i++)
  {
    document.imageArray[i] = new Image();
    document.imageArray[i].src = imagenames[i];
  }
}


multiPreload(
      "data/images/button_hover.gif","data/images/button_active.gif"
      )