title: Get every element after the third on smarty
body: <p>hello I want to apply an specific class to every 3rd element and the next one getting the third element was easy I used </p>
  
  <pre><code>{if $smarty.foreach.products.index % 3}omega{else}
  </code></pre>
  
  <p>but getting the next one its being tricky, i tried with </p>
  
  <pre><code>{if $smarty.foreach.products.index % 3+1}omega{else}
  </code></pre>
  
  <p>but doesnt work, do you know whats the correct way of writing?</p>