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_array=the_images.split(",");
    for(var loop = 0; loop < the_images_array.length; loop++){
	  newImage(the_images_array[loop]);
    }
	return PreloadOk = true;
  }
}

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