Problem Adding Custom Field Images – Outputting Field Name?

I have a test website here.

I created custom fields (called ‘image1’, ‘image2’, etc) with an image path as the value field. The ‘image1_label’ field has a value of ‘1’, which will be linked to view the images in the lightbox. (See the numbers below ‘Process Sketches’ on the test page above.

I am using the documentation found here and on the developer’s website here.

With the above documentation, I added a functions.php file withe the following code:

<?php function bd_parse_post_variables(){
// bd_parse_post_variables function for WordPress themes by Nick Van der Vreken.
// please refer to bydust.com/using-custom-fields-in-wordpress-to-attach-images-or-files-to-your-posts/
// for further information or questions.
global $post, $post_var;

// fill in all types you'd like to list in an array, and
// the label they should get if no label is defined.
// example: each file should get label "Download" if no
// label is set for that particular file.
$types = array('image' => 'no info available',
'file' => 'Download',
'link' => 'Read more...');

// this variable will contain all custom fields
$post_var = array();
foreach(get_post_custom($post->ID) as $k => $v) $post_var[$k] = array_shift($v);

// creating the arrays
foreach($types as $type => $message){
global ${'post_'.$type.'s'}, ${'post_'.$type.'s_label'};
$i = 1;
${'post_'.$type.'s'} = array();
${'post_'.$type.'s_label'} = array();
while($post_var[$type.$i]){
echo $type.$i.' - '.${$type.$i.'_label'};
array_push(${'post_'.$type.'s'}, $post_var[$type.$i]);
array_push(${'post_'.$type.'s_label'},  $post_var[$type.$i.'_label']?htmlspecialchars($post_var[$type.$i.'_label']):$message);
$i++;
}
}
}
?>

Then I used the magic function to call the images and links:

<?php while (have_posts()) : the_post();   bd_parse_post_variables(); 

         ?>

        <div class="post">

            <div class="entry">
                <?php the_content(); ?> 

<!-- Display the list of links -->
<ul class="process">
<?php while(count($post_images) > 0): ?>
 <li>
<a href="<?php echo array_shift($post_images); ?>" title="Process Sketches">
<?php echo array_shift($post_images_label); ?>
</a>
</li>
<?php endwhile; ?>
</ul>

Everything works, but it’s outputting the ‘image1’ and ‘image2’ custom field names above the content (where I called the bd_parse_post_variables(); ).

Does anyone know why it’s happening and how to remove this?

Thanks!