function newImage(img) {
	if (document.images) {
		an_image = new Image();
		an_image.src = img;
		return an_image;
	}
}

function preloadImages(the_images) {
  if(the_images)
    var the_images=the_images+",";
  else
    var the_images="";


  for(i = 1; i <= 8; i++){
	  the_images=the_images+"/btop"+i+"_ovr.gif,";
  }
  the_images=the_images.substr(0,(the_images.length-1));

  if(the_images){
    var the_images_array=the_images.split(",");
    for(var loop = 0; loop < the_images_array.length; loop++){
	  image_name = the_images_array[loop];
	  image_parts = image_name.split("/");
	  image_filename = image_parts[image_parts.length-1]; // last part
	  image_filename =  image_filename.substr(0,image_filename.length-4);
	  //alert(image_filename + "= newImage('"+ the_images_array[loop] + "')");
	  eval(image_filename + "= newImage(the_images_array[loop])");
	  //alert(the_images_array[loop]);
    }
	return PreloadOk = true;
  }
}

function ChangeImg() {
    document.images[ChangeImg.arguments[0]].src=ChangeImg.arguments[1];
}