title: Div not showing scrollbars with jScrollPane
body: <p>Apologies if this question has already been asked, but I'm struggling to find an answer on SO.</p>
  
  <p>I'm using jQuery jScrollPane on a <code>div</code>. I can tell the plugin has been linked correctly as the standard browser scroll bar is removed, but no jScrollPane scrollbar is added in replacement, I just can't scroll down the content..</p>
  
  <p>My markup is as simple as:</p>
  
  <pre><code>&lt;div class="classa"&gt;
    ...Long content here...
  &lt;/div&gt;
  </code></pre>
  
  <p>Javascript:</p>
  
  <pre><code>$(document).ready(function(){
      $(".classa").jScrollPane();
  });
  </code></pre>
  
  <p>Has anyone experienced this before? Is there something simple I'm missing?</p>
  
  <p>I think I might be missing some CSS somewhere or something, otherwise I don't know how to specify the colour of the scrollbar anyway...</p>
  
  <p>Your help would be much appreciated</p>