title: how to remove scroll bar in drill down highchart
body: <p>Below is my drill down chart, I want to remove the scroll bar while drill down event, and need the scroll bar again when we do  drill up event.</p>
  
  <p>I tried below api's but it didn't help:</p>
  
  <pre><code>chart.scroller.scrollbar.hide();
  chart.scroller.scrollbarGroup.hide();
  </code></pre>
  
  <p>scrollbarGroup.hide() - is removing the scroll bar but along with that <strong>success</strong> value also removing which I don't want. </p>
  
  <p>My second problem is while loading first time - my scroll bar directly pointing to <strong>user3</strong> instead of <strong>user1. But if I do drill down event and do drill up event its pointing to **user1</strong> but not for the first time. </p>
  
  <p>Any help would be really appreciated to resolve these two issues.</p>
  
  <p><a href="http://jsfiddle.net/jqueryb/ndfk7vgd/15/" rel="nofollow">Here is my fiddle</a></p>