Index: webform.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/webform/webform.module,v
retrieving revision 1.196.2.68
diff -u -p -r1.196.2.68 webform.module
--- webform.module	18 Oct 2010 07:38:44 -0000	1.196.2.68
+++ webform.module	21 Oct 2010 02:26:28 -0000
@@ -3056,7 +3056,9 @@ function webform_component_invoke($type,
   $function = '_webform_' . $callback . '_' . $type;
   webform_component_include($type);
   if (function_exists($function)) {
-    return call_user_func_array($function, $args);
+    $data = call_user_func_array($function, $args);
+    call_user_func_array('drupal_alter', array_merge(array('_webform_' . $callback . '_' . $type, &$data), $args));
+    return $data;
   }
 }