s test uses the same data as the <a
        href='demo.html'>demo</a> test, but reverses the y-axis.</font><br/>
    <table><tr><td>
    <div id="demodiv"></div>
    </td><td valign=top>
    <div id="status" style="width:200px; font-size:0.8em; padding-top:5px;"></div>
    </td>
    </tr></table>
    <script type="text/javascript">
      g = new Dygraph(
              document.getElementById("demodiv"),
              function() {
                var zp = function(x) { if (x < 10) return "0"+x; else return x