Still having Web Msg posting Problem

[Dark Servant]

I am still experiencing a problem with posting messages on WebCT for 
Curtin university using any browsers on my mac (Tried Safari, iCab, 
IE).  I can get into the system and type messages fine but the post 
button does nothing when I click on it.  No problems exist on other 
computers including other Macs so it is just mine.
Running OS 10.2.6 on a G4-400

So far no-one has been able to help me with this one so I would be very 
greatful to anyone who can solve my problem
Ruben A. Franke