show thumbs in the album at a html page

cheath

Hi, I wanna show all thumbs and file link in the album.
I read the hack (zenphoto as plugin), but I don't really know how to do.
I tried this...

<?php
define('ZENFOLDER', 'zp-core');
define('WEBPATH', 'focal');
require_once(WEBPATH . "/" . ZENFOLDER . "/template-functions.php");
$randomImage = getRandomImages();
$randomImageURL = getURL($randomImage);
?>

There's an error occured.
PHP Fatal error: Call to a member function getAlbumName() on a non-object

I don't know why, could you anyone kind enough to write a example code and I'll learn it.

Thanks.