I finally got around to updating my canvas / sql visualization code. Interacting with the map is now much easier.
And I’ve posted a live demo of it here: http://crccheck.com/demo02
It’s not as refined as google maps, but it’s still pretty fancy. Navigation is done in the minimap, and you can draw on the large map with your mouse pointer.
This time, I made it work in FireFox and Chrome/Safari