Update to the maze generator

I’ve updated the maze generator so you can now generate and navigate a 3D maze. The actual maze navigation part is written in dynamically generated javascript; you can save the generated HTML which will also save the maze itself, then play it back offline if you feel so inclined.

Just as the original program was my first really major PHP project, the javascript now incorporated into the script (and comprising about half the code) is my first significant javascript program. I will concede it’s not actually all that well written.

Still, given I knocked the javascript code and associated changes to the PHP code together in around 8-10 hours I think it’s adequate.

Source code is here. Maze page is there.