How to go to previous page in task flow using 'BACK' button in the browser?

Hi...
I have created system using ADF application that can detect 'BACK' button in the browser(e.g. firefox and google chrome).Everytime i click the 'BACK' button in the browser,it will prompt out message that ask user whether want to 'stay in the current page' or 'leave the page'. Once i click 'leave the page' it will take me to the login page.
Is there any possibility for go back to previous page in task flow when user click on browser's back button? By the way, the task flow is in the page fragment.
can anyone tell me how to do it?Need this step urgently..
Thanks in advance.
Edited by: 942376 on Jun 22, 2012 11:03 PM
Edited by: 942376 on Jun 22, 2012 11:07 PM

Can you send that code to have a look ? Share it on some site

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