public function display()
    {
        if (!$this->visible) {
            return;
        }

        SwatWidget::display();

        $outer_div = new SwatHtmlTag('div');
        $outer_div->id = $this->id;
        $outer_div->class = $this->getCSSClassString();

        $outer_div->open();
        $this->displayTitle();
        $this->displayContent();
        $outer_div->close();
    }