function UnbHookCustomPageAddNavLink(&$data)
{
    global $UNB, $UNB_T;

    $mylink = array(
        'link' => UnbLink('@custompage', null, true),

        'title' => $UNB_T['_custompage.linktitle'],
        'active' => $UNB['ThisPage'] == '@custompage');

    // You can use the array items 'image' and 'imageUrl' to set an icon before
    // the navigation link. See the UnbBeginHTML function for more details.
    // This image must currently reside in the design's img/ directory.

    // Add new link at the end of the links array
    $data[] = $mylink;

    // If you want to add your link to the left of the navigation line, you
    // must add it to the beginning of the links array. This can be done like
    // the following example: (instead of the line above!)
    // $data = array_merge(array($mylink), $data);

    return true;
}