Tabela de Medidas usando fancybox.

botao.php

<?php
/**
 *
 * Tabela de Medidas
 *
 */
$images = foundation_q_get_option('website_table_sizes');
$images = explode(",", $images); // Transforma a lista de IDs em um array

foreach( $images as $image )
  $images_array[] = (int)$image;

$first = true;
foreach ($images_array as $image):
  $thumb_url = wp_get_attachment_image_src( $image, 'full', false );

  if ( $first ): ?>
    <a rel="tabela-de-medidas" href="<?php echo $thumb_url[0]; ?>" class="btn btn-link fancybox">Tabela de Medidas</a>
    <?php
    $first = false;
  else: ?>
    <a rel="tabela-de-medidas" href="<?php echo $thumb_url[0]; ?>" class="fancybox"></a>
    <?php
  endif;
endforeach; ?>

options.php

array(
  'id'       => 'website_table_sizes',
  'type'     => 'gallery',
  'title'    => 'Tabela de Medidas',
  'subtitle' => '',
  'desc'     => '',
),