data-toggle="dropdown" role="button" aria-expanded="false">
    Articles
     
    <span class="caret"></span>
  </a>
  <ul class="dropdown-menu" role="menu">
<li>
      <a href="../articles/hlm_resid.html">Residual Diagnostics</a>
    </li>
    <li>
      <a href="../articles/influence_diagnostics.html">Influence Diagnostics</a>
    </li>
    <li>
      <a href="../articles/jss_update.html">Updated JSS code</a>
    </li>
  </ul>
</li>
      </ul>
<ul class="nav navbar-nav navbar-right">
<li>
  <a href="htt