AJAX/Jquery form validation and maintain session state and not timeout page while user takes long test. - repost

THIS IS REPOST AS PREVIOUS Freelancer did not complete. I have a website, [login to view URL] where users can login, update user info and then purchase and take online courses. The courses are lengthy to read and then they take a test. The website keeps losing session date (timing out) during the hour or more that the user is reading the material. I need three, simple, fixes to the website that I do not have time to complete myself. First - validate the user input and clean it for entry in to the database for registration, update info and contact us page, Second - on the contact us and registration page, add a simple captcha to stop the bots from emailing me, Third - Stop the session from timing out. may use occasional behind the scenes AJAX call. Do NOT want simple change of cookie life, my website breaks without javascript turned on, so I would like to use AJAX or some other more durable method to maintain Session state. Could give a javascript pop up stating going to timeout also. The session times out while the user is reading the article. Then, when they go to take the test (on another tab of the same page) they will click on the radio buttons for the answers and then hit submit, but because the session has lost the SESSION variables, the grading page fails and the user is not happy. Need to maintain page and SESSION state for up to 6 hours in some cases. I am fine with a page that never times out. I leave the particular solutions to the programmer, but before implemented, I must approve prior to accepting the bid. Please give detailed explanation of solution in your bid. You can log in and see examples of the pages listed. username = tester password = tester123 under My Courses tab you can see the course/test system that is causing the time out issue. I look forward to working with workers on the Freelancer site for many more projects in the future.