display custom field only if value present? (revisited)

There was another topic of this same name, but closed to additional replies 🙁 . However, with the help of a friend I was able to come up with a solution to this problem using the following code:

<?php
  $values = get_post_custom_values("$key");
  if ( is_array($values)) : ?>
    <div class="style">
      <img src="<?php bloginfo('template_url'); ?>/images/shared/action_thumbs/<?php print get_post_meta($post->ID, "$key", "true"); ?>" width="200" height="133" border="0" />
    </div>
    <?php the_content(); ?>

<?php else : ?>
    <?php the_content(); ?>

<?php endif; ?>

May be useful to you!