/**
  * Hook handler
  * @author Marooned
  *
  * @param $parser Parser
  * @param $ig WikiaPhotoGallery
  */
 public static function beforeParserrenderImageGallery($parser, $ig)
 {
     wfProfileIn(__METHOD__);
     // parse each gallery / slideshow and get its data
     $ig->parse();
     $data = $ig->getData();
     // get data of gallery / slideshow we're interested in
     if ($data['hash'] == self::$mGalleryHash) {
         self::$mGalleryData = $data;
     }
     self::$lastGalleryData = $data;
     wfProfileOut(__METHOD__);
     // by returning false we're telling MW parser to return gallery's HTML immediatelly
     return false;
 }