Index: form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.150
diff -u -F^f -r1.150 form.inc
--- form.inc	9 Sep 2006 08:25:23 -0000	1.150
+++ form.inc	20 Sep 2006 14:49:33 -0000
@@ -1173,6 +1173,7 @@ function theme_checkbox($element) {
  *   A themed HTML string representing the checkbox set.
  */
 function theme_checkboxes($element) {
+  $element['#children'] = '<div class="form-checkboxes">'. $element['#children'] .'</div>';
   if ($element['#title'] || $element['#description']) {
     unset($element['#id']);
     return theme('form_element', $element, $element['#children']);