I did a forum search before posting the topic and maybe this link is relevant.http://www.nbill.co.uk/forum/index.php/topic,1851.0.html
also I have taken a print screen fo the error message that pops up regarding script not responding.
The problem is fairly solid and consistant yet on a couple of tries it wasn't present.
your demo works fine... on all browsers...
It is possible that my PC may be having issues with your script?
I did notice however that it functions ok using safari on an IPAD 2. Which is puzzling.
So I have a way to change the profile field order using my Ipad but not my desktop.
I will send a support ticket with log on admin credos for you to try.