In the demo here:  http://jquery.bassistance.de/validate/demo/

The second form's "topics" checkbox grouping is validated only if the check box above for receiving the newsletter is checked.

1) Check the newsletter box but none of the topics.

2) Press submit.

3) Uncheck the newsletter box.

Notice how the validation label does not disappear when the newsletter box is unchecked (just the topics).

Is there a way to remove that label when the newsletter box is unchecked, without naming the newsletter box the same as the topics (because that opens another can of worms)?