ubmenu opens. Useful for notifying the application of menu state so that
 it does not attempt to hide the action bar while a submenu is open or similar.</p></div>
  <div class="jd-tagdata">
      <h5 class="jd-tagtitle">Parameters</h5>
      <table class="jd-tagtable">
        <tr>
          <th>subMenu</td>
          <td>Submenu currently being opened</td>
        </tr>
      </table>
  </div>
  <div class="jd-tagdata">
      <h5 class="jd-tagtitle">Returns</h5>
      <ul class="nolist"><li>true if the Cal