Lightbox Link for a Galleria?

Bit of a Drupal newb. When I input the code

<?php
print theme('galleria_lightbox_link', 10, 800, 600, 'Click here for the Gallery');
?>

within the body of a content type... all that happens is the code gets rendered on the page as is, as apposed to a link for the galleria/lightbox. I have full html activated... galleria is functioning well without lightbox2, so that is also working well. I was sure that lightbox was activated... am I missing something easy? I feel it the directions are pretty clear cut, but it doesn't seem to be working for me.