static function connect($autoSelectDB = true)
 {
     self::$dbconf = new DATABASE_CONFIG();
     self::$host = self::$dbconf->default['host'];
     self::$user = self::$dbconf->default['login'];
     self::$password = self::$dbconf->default['password'];
     self::$db = self::$dbconf->default['database'];
     self::$connection = @mysql_connect(self::$host, self::$user, self::$password);
     if (!self::$connection) {
         return "Verbindung zur Datenbank konnte nicht hergestellt werden";
     }
     if ($autoSelectDB) {
         mysql_select_db(self::$db, self::$connection);
     }
     return true;
 }