title: facebook social plug-in not showing up when added dynamically
body: <p>I am adding facebook social plug in to a webpage</p>
  
  <p>when I manually add :</p>
  
  <pre><code>&lt;div class="fb-comments" data-href="http://website.com/z" data-width="700" data-numposts="7" data-colorscheme="light"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>it works , however , when javascript code add it , it doesn't </p>
  
  <p>any ideas ?</p>