Display posts and pages if custom field is present

Heya all

Ive been playing with some code i found on the forums that displays and links to posts if they have a custom field set. I am trying to acheive the same thing however i would like the list to include pages aswell. Im not to sure how to go about this though, can anyone help? The code i currently have is below, its a straight lift from another thread i found.

<?php
  $postslist = get_posts('numberposts=-1&order=ASC&orderby=title&meta_key=restlist');
 foreach ($postslist as $post) :
$customPostID = get_post_custom($post->ID);
if(isset($customPostID['restlist'])) :
    setup_postdata($post);
echo '<li><a href="' . get_permalink() . '">' . $customPostID['restlist'] . '</a></li>';
endif;
endforeach;
?>
</ul>

Any help will be much apreciated.

Ludz~