A PHP-powered, minimalistic Web-Quiz with DB-Backend

Live version without PHP: start.html

I was, once again, searching for a minimalistic but working Online-Quiz template with PHP, but I didn't find one, which is why I made my own
Questions and Answers are saved in Javascript, because there are no "correct answers" to most questions, which makes cheating irrelevant. PHP is only used to save the results in a databse.

The only thing that's missing is the serverside check of the data the client sends.

Project can be downloaded here.