Today I "built" a map of the German countries as well as the neighbor states via several scans and published the map online at Napoleon Online. Just go to http://www.napoleon-online.de/kriege_karten_deutschland1812.html
There you find a smaller image of the map and if you move the rectangle on the map you should see the zoom below. Perhaps you have to refresh the site in order to start the script.
Greetings from Berlin
P.S. I've an original map of the French Republic of 1802 which I want to publish in a similar way