<div id="container" class="variable-sizes">

  {% assign page_position = page.page_position %}

  {% for element in site.elements limit:20 offset:page.page_position %}

    {% include element-partial.html %}

  {% endfor %}

</div>

<script src="../{{ site.jquery_js }}"></script>

<script src="../{{ site.isotope_js }}"></script>

<script>

  $(function(){

    var $container = $('#container');

    $container.isotope({

      itemSelector : '.element',

      layoutMode : 'fitRows'

    });

  });

</script>