Panel with Nav Tabs

gistfile1.txt

<div class="panel with-nav-tabs panel-primary">
  <div class="panel-heading">
    <ul class="nav nav-tabs">
      <li class="active"><a href="#tab1" data-toggle="tab">A</a></li>
      <li><a href="#tab2" data-toggle="tab">B</a></li>
      <li><a href="#tab3" data-toggle="tab">C</a></li>
    </ul>
  </div>
  <div class="panel-body">
    <div class="tab-content">
      <div class="tab-pane fade in active" id="tab1">
        <?php include('A.php'); ?>
      </div>
      <div class="tab-pane fade" id="tab2">
        <?php include('B.php'); ?>
      </div>
      <div class="tab-pane fade" id="tab3">
        <?php include('C.php'); ?>
      </div>
    </div>
  </div>
</div>