public static function &getInstance()
 {
     if (is_null(self::$_instance)) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }
 public function _procDB($method, $arr = null)
 {
     if (!class_exists('naverSyndicationDB')) {
         require_once trailingslashit(dirname(__FILE__)) . 'badr-syndication-db.php';
     }
     $oDB =& badrSyndicationDB::getInstance();
     return call_user_func(array($oDB, $method), $arr);
 }