website/gallery-container.html

<div id="gallery-container" class="gallery-grid"
     data-files="1.png,2.jpg,3.jpg,4.jpg,5.png,6.png,7.jpg,8.jpg,9.jpg,10.jpg,11.jpg,12.jpg,13.gif,14.jpg,15.png,16.png,17.jpg,18.jpg,19.jpg,20.jpg,21.gif,22.jpg,23.jpg,24.png,25.png,26.png">
</div>

<script src="js/gallery.js"></script>