public static function getJSON($url, $data = null, $callback = null)
{
if (!is_array($data)) {
$callback = $data;
$data = null;
}
// TODO some array_values on this shit
return self::ajax(array('type' => 'GET', 'url' => $url, 'data' => $data, 'success' => $callback, 'dataType' => 'json'));
}