Build a Website

I should have a simple login application in spring mvc framework with home page and 2 forms. Main thing is I should have a pop-up message before 5 mins of session time out,saying that "Your session is about to time out. Do you want to continue ?" If "no" redirect to login page, If "yes" again start the session freshly in that page. Note : 1)If he is in middle of the form and for some reason he is in idle and the pop-up message shows, If he want to continue it should be there where he left the form, should not refresh the form. 2) When the session time out pop up message came before 5 mins of session time out and the user has not responded it should redirect to login page once session time expires and I should have timer count when the pop up message shows. The session time out pop-up message should be there for all jsp pages.