Browser Back button problem

From: GMK (georgeskaddoum_at_yahoo.com)
Date: 02/22/05 

Date: Tue, 22 Feb 2005 14:07:49 +0200

Dear all
I'm having a probelm concerning the security of my application.
the problem is when a user is loggoed in and then he looged out i redirect
him to the main page of my appkication but if he clicks on the Browser's
"back button" he could then enter to the application.
i'm removing all sessions concerning the applcation on logout but i would
like to know how could i handle the "Back button click event" of the
browser"

Thanks in advance for your help/