public function ajaxProcessUpdateImagePosition()
 {
     $response = false;
     if ($json = Tools::getValue('json')) {
         $response = true;
         $json = stripslashes($json);
         $images = Tools::jsonDecode($json, true);
         foreach ($images as $id_simpleblog_post_image => $position) {
             $SimpleBlogPostImage = new SimpleBlogPostImage((int) $id_simpleblog_post_image);
             $SimpleBlogPostImage->position = (int) $position;
             $response &= $SimpleBlogPostImage->update();
         }
     }
     if ($response) {
         $this->jsonConfirmation($this->_conf[25]);
     } else {
         $this->jsonError(Tools::displayError('An error occurred while attempting to move this picture.'));
     }
 }