$this->err = "";
}
+ function set_advanced() { $_SESSION['philter_adv'] = true; }
+ function del_advanced() { unset($_SESSION['philter_adv']); }
+ function is_advanced() { return isset($_SESSION['philter_adv']); }
+
/** returns the i18n string
* @param $_index the index of the string
* @returns the string or false