[support] Conditional webform elements?

[Luke]

Is there any way in the webform module, to cause elements, or perhaps all 
those belonging to a fieldset, to be hidden if a certain value is set in a 
previous element?

Basically, a section such as:

Are you filling this out on behalf of someone else?  yes/no checkbox

Pagebreak element

You indicated that you are filling this out on behalf of someone else. 
Please answer these 10 questions.

pagebreak element

The part after the first pagebreak, and including the second pagebreak, 
would not even show up if the user checked "no" on the checkbox.

Luke