/**
  * handle NextGEN Gallery 2 tag galleries
  * @param stdClass $gallery
  * @return stdClass
  */
 public static function ngg2GalleryObject($gallery)
 {
     if ($gallery->displayed_gallery->source == 'tags') {
         self::$taglist = implode(',', $gallery->displayed_gallery->container_ids);
         $gallery = self::nggGalleryObjectTagged($gallery);
     } else {
         self::$taglist = '';
     }
     return $gallery;
 }