'I'd generally advise against any AJAX stuff in forms, b...'
From the comments on 'Good Practice in Implementing HTML Forms'
Stuart Brown wrote:
I'd generally advise against any AJAX stuff in forms, but I must confess I've been impressed once or twice with those forms that check username availability before submission.
@Pete - Can't say I'm a regular user of the fieldset/legend elements, but (for longer forms especially) they could be useful for grouping elements, stylistically at least.