title: Change chevron on click event
body: <p>I want to change the chevron from <code>down</code> to <code>up</code> based on user's <code>onClick</code> event. I've tried using other samples by other people but it does not work out.</p>
  
  <p>This is my <a href="http://jsfiddle.net/dc5mLvgz/" rel="nofollow">JSFiddle</a>.</p>