--- webform/components/grid.inc	2009-03-04 00:05:12.000000000 -0500
+++ webform/components/grid.inc	2009-09-14 14:56:56.000000000 -0400
@@ -294,7 +294,7 @@
     }
     $rows[] = $row;
   }
-  $output = theme('table', $header, $rows);
+  $output = theme('table', $header, $rows, array('class' => 'webform-grid'));
 
   return array(array(array('data' => $output, 'colspan' => 2)));
 }
@@ -401,7 +401,7 @@
     $rows[] = $row;
   }
 
-  return theme('form_element', $grid_element, theme('table', $header, $rows));
+  return theme('form_element', $grid_element, theme('table', $header, $rows, array('class' => 'webform-grid')));
 }
 
 /**