<div style="min-height:30px">
  <h4>Kliknij na miniatur, aby zobaczy cay obraz.</h4>
  <div class='th_row'>
  <?php $count = 1; foreach($images as $image): ?>
    <a href='index.php?action=showimage&name=<?=$image?>'>
    <img src='<?=$thumbnailspath.$image?>.jpg'></a>
    <?php if(!($count++ % 5)): ?>
      </div><div class='th_row'>
    <?php endif; ?>
  <?php endforeach; ?>
  </div>
</div>