protected function GetLink($key, $content, $row = 0)
{
$link = $this->GetLinkURL($key, $row);
if (is_null($link)) {
return $content;
}
$link_attr = array('xlink:href' => $link, 'target' => $this->link_target);
return $this->Element('a', $link_attr, NULL, $content);
}