Support System drop downs not working

Hi

i've installed the WPMU Support System and it shows as a bit 'broken' on my site.

None of the drop downs work here - http://site2.xcelsupport.com/wpmu-support/
And also on the 'submit ticket' page.

Can you advise how to correct that please?

FYI i'm using the Salient theme and have granted support access if you need to get in the back end.

If I can get this working, i'll be VERY pleased

Thanks
Farzan