<!doctype html>
<html>
  <head>
    <title>table rowspan colspan dynamic</title>
    <meta charset="utf-8"/>
  </head>
  <body>

    <!-- This sets the rowspan and columnspan attributes on an mtable cell
         via Javascript. It should render the same if the attributes are
         directly specified in the source code. -->
    <math>
      <mtable>
        <mtr>
          <mtd id="mtd22"><msub><mi>a</mi><mn>1</mn></msub></mtd>
          <mtd><msub><mi>a</mi><mn>13</mn></msub></mtd>
        </mtr>
        <mtr>
          <mtd><msub><mi>b</mi><mn>23</mn></msub></mtd>
        </mtr>
        <mtr>
          <mtd><msub><mi>c</mi><mn>31</mn></msub></mtd>
          <mtd><msub><mi>c</mi><mn>32</mn></msub></mtd>
          <mtd><msub><mi>c</mi><mn>3</mn></msub></mtd>
        </mtr>
      </mtable>
    </math>

    <script>
      window.addEventListener("load", function() {
      document.body.offsetTop;
      
      var mtd22 = document.getElementById("mtd22");
      mtd22.setAttribute("rowspan", 2);
      mtd22.setAttribute("columnspan", 2);
      }, false);
    </script>

  </body>
</html>
