public function save_action()
 {
     if ($this->_validate()) {
         require_once UNOSLIDER_BASE . '/application/models/unoslider_presets.php';
         $model = new Unoslider_Presets_Model();
         $data = array('title' => $_POST['title'], 'animation' => serialize($_POST['animation']), 'block' => serialize($_POST['block']));
         if (empty($_POST['id'])) {
             $id = $model->insert($data);
             $success = $id === 0 ? false : true;
             $response = json_encode(array('success' => $success, 'id' => $id));
         } else {
             $result = $model->update($_POST['id'], $data);
             $success = $result === false ? false : true;
             $response = json_encode(array('success' => $success));
         }
         if (!$success) {
             header('HTTP/1.1 403 Forbidden');
         }
         header("Content-Type: application/json");
         echo $response;
     }
     exit;
 }