public function getLoginStatusUrl($params = array()) {
        return $this->getUrl('www', 'login_status', array_merge(array(
            'client_id'       => $this->getClientID(),
            'no_session'      => $this->getCurrentURI(),
            'no_user'         => $this->getCurrentURI(),
            'ok_session'      => $this->getCurrentURI(),
            'session_version' => 1), $params));
    }