Hey,

First off, excellent plugin. I came across it not a week ago and have been playing with it since and have already put it in a couple of designs.
 

 Second, I'm a big web standards advocate and what gets me about the form is the XML ID's placed on 4 of the input in _working _failure _codeerr _popup on lines 1529-1532.

 What stops the form from validating is the use of underscores '_' at the start of an ID. I have tested the effects of removing the underscores from the beginning of the IDs but it disables the ajaxy form refresh function.

I hope there is an easy fix which you can apply, or let us know in the forum so we can patch it ourselves.

Many thanks,

Dave Bowker