title: NanoScroller not triggering itself
body: <p>The code below should be able to trigger the <code>pane</code> and <code>slider</code> to appropriate <code>display</code> css properties according to <a href="http://jamesflorentino.github.com/nanoScrollerJS/" rel="noreferrer">nanoscroller documentation</a>. However, the scroller doesn't show the <code>slider</code> until I do some action in browser such as pressing F12 to fireup firebug or right clicking an element inside to inspect it. What could possibly be going wrong?</p>
  
  <pre><code>        $(".nano").nanoScroller({
          alwaysVisible: true,
          scroll: "bottom"    
      });
  </code></pre>