function setDefaultImage(galleryObject, image_id) {
	var req = new Request({
		method: 'get',
		url: "index.php",
		onComplete: function(ret) {
			if (ret.length > 0) alert(ret);
			$$('.imageBorder').each(function(image) {
				image.className = "imageBorder";
			});
			
			$("imageBorder_"+image_id).className = "imageBorder default";
		}
	}).send("class="+galleryObject+"&path=model&method=setDefaultImage&params="+image_id);
}