Toggle the tbody of a table

Toggle the tbody of a table

Hello,

i habe a table in html like this
  1. <table>
  2.       <tbody style="display:none;">
  3.             ...
  4.       </tbody>
  5.       <tfoot>
  6.             <tr><td>Show informaiton</td></tr>
  7.       </tfoot>
  8.  </table>
If i click on tfoot i want to fade in the tbody. This is my jQuery Code that isn't work.
  1. jQuery("tfoot").click(function () {
  2.       jQuery(this).prevUntil("tbody").slideToggle("slow");
  3. });