S = {
              URL_ROOT:'./',
              VERSION:'',
              LANGUAGE:'None',
              COLLAPSE_INDEX:false,
              FILE_SUFFIX:'.html',
              HAS_SOURCE:  true,
              SOURCELINK_SUFFIX: '.txt'
          };
      </script>
        <script type="text/javascript" src="_static/jquery.js"></script>
        <script type="text/javascript" src="_static/underscore.js"></script>
        <script type="text/javascript" src="_static/doctools.js"></script>
        <script type="