<html>
<body>

<table border=1>
 <tr>
  <td>Test</td>
  <td rowspan=3>Test</td>
 </tr>
 <tr>
  <td>
   <span>This cell should be visible
    <table>
     <tr>
      <td>This table should be visible</td>
     </tr>
     <input type="hidden">
    </table>
   </span>
  </td>
 </tr>
</table>

</body>
</html>