How to implement countdown timer in apex

Hi all,
I want to implement timer in my application.i am working on apex 4.0 version.I am developing online test application,so for this i want to display timer for test.
can anyone suggest me how can i implement countdown timer in my application.
thanks
jitu

Hi,
You can refer "Martin Giffy D'Souza's" Enhanced APEX Session Timeouts example
http://www.talkapex.com/2009/09/enhanced-apex-session-timeouts.html
Regards,
Kartik Patel
http://patelkartik.blogspot.com/
http://apex.oracle.com/pls/apex/f?p=9904351712:1

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import java.io.*;
import java.util.*;
import java.lang.*;
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How to implement countdown timer in apex

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