First, thanks Gnuite for a great program.

I ran across this mapping site today, and it looks like they use an easily-parseable URL format, but I'm not sure about the actual body of the page - there's a fair amount of javascript, but it doesn't look too complex.

EDIT: There's a link at the top left of the page that takes you to the "Old Site" or "New Site". My comments above are for the "New Site", but the old one might be easier to parse.