jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
}

$.preloadImages("img/indexgallery/front.jpg", "img/indexgallery/side.jpg",
"img/indexgallery/back.jpg", "img/indexgallery/backopen.jpg", "img/indexgallery/firebox.jpg", "img/indexgallery/controls.jpg", "img/indexgallery/cutaway.jpg", "img/indexgallery/controls.jpg", "img/indexgallery/video.jpg" );