Stopping timer reset in JSP page when it is refreshed?

hello there
iam making online examination system using jsp&servlets
and in the test page i use a javascript timer and i want to prevent the timer from being reset when the page is reloaded(refreshed)
since disabling refresh functionality is a bad behavior,is there's any way to do that?

Using a cookie is a bad approach IMO. It is STILL clientside.
Anything you send to the client can be doctored.
You have to retain the timestamp on the server - most probably within the session.
Sure, the jsp page can use javascript to display a countdown timer on the page, but the authorative time has to be from the server.
So you store in session the time when the user starts the test.
If they refresh the page, it should find that variable, see that the test is already started, and send them back an appropriate updated time.
cheers,
evnafets

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<pre>
I am created a cutom jsp page. When i am clicking on a button it working fine, but if i am pressing
Enter key it redirecting to home page and showing an exception in cosole.
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18:00:50,718 ERROR [WEBAPP] Class/Method: tcActionBase/execute encounter some problems: {1}
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Edited by: iceman513 on Aug 24, 2010 10:32 AM
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