I have been working with staff from Law who run online debates in Wimba. One thing they have requested is a debate timer (you remember the one that rings one bell at 3 minutes then two bells at 5 mins).
While not perfect it is close (enough)—see the following image.
The page that you need to push to the branding frame is available for your use at:
http://www.usq.edu.au/users/evansp/browse/wimba/debatetimer/
The page contains instructions for loading the debate timer (or clock) into the content frame.
I’ll be talking about this and other things Wimba at the Wimba Distinguished Lecture Series presentation advertised at http://www.wimba.com/company/events/1712
Regards,
Peter Evans