function reloadCaptcha(obj) {
	$(obj).fadeTo(
		"fast",
		0.33,
		function(){
			$.ajax({
					type: "GET",
					url:  "captcha.php",
					success: function(response) {
						$(obj).empty();
						$(obj).append($(response).children());
						$(obj).fadeTo("fast", 1);
					}
				}
			)
		}
	);
}