Hi, I would like a code for this if possible:

When a person visits my blog and stays for 10 mins (or any period of time that I can adjust in the html), and tries clicking on another page or link (or back button), the person cannot exit the page (and not even able to close it) until he/she keys in a password in a box that will pop up. That password is "thanks" (which will be made known to the visitor when the pop up appears).

In essence, the person is locked in on that page until he/she keys in the password to exit.