   <li role="presentation" class="active">
        <a href="#demo" aria-controls="demo" role="tab" data-toggle="tab">Live Demo</a>
      </li>
      <li role="presentation">
        <a href="#code" aria-controls="demo" role="tab" data-toggle="tab">Source Code</a>
      </li>
    </ul>
  </div>

  <div class="tab-content">
    <div role="tabpanel" class="tab-pane active" id="demo">

      <div ic-on-error="alert('oh no!')">
        <div class="btn btn-default" ic-get-from="#hello_world">Click me</div>
      