public function isactive() {
        global $PAGE;

        if ($this->is_section()) {
            $active = $PAGE->navigation->find_active_node();
            while ($active = $active->parent) {
                if ($active->key == $this->key && $active->type == $this->type) {
                    return true;
                }
            }
        }
        return $this->isactive;
    }