protected function displayCheck()
    {
        $image_tag = new SwatHtmlTag('img');
        $image_tag->src = 'packages/swat/images/check.png';
        $image_tag->alt = Swat::_('Yes');
        $image_tag->height = '14';
        $image_tag->width = '14';
        $image_tag->display();
    }