Can jigsaw stop a servlet while the servlet is running?

I have a servlet running on jigsaw.  If a remote user activates 
the servlet from a web browser, then decides to click the Stop 
button on the web browser before processing has finished,  the 
transfer is interrupted to the user's web browser, but the 
servlet continues to run until it has finished (it writes alot of
stuff to a database). 

Is there a way to get jigsaw to pass the message that the transfer has
been interrupted by the user to the servlet and get it to stop
processing immediately?

Thanks for any info,

Fiona
Fiona Cameron
Computing Officer, Faculty of Informatics, University of Ulster
email: f.cameron@ulst.ac.uk  phone:  01232-366677