I need help with a small project that I am doing for my client. My clients have a company that does staffing for hotel workers and when they sign up with him, they have to watch 4 separate training videos. What I need help with is a script of some sort that will pop-up a sign in box of some sort after every video was finished so we can log a record of that person watching each video. How can I accomplish this with an open source free script?

Thanks in Advance