Ah, so it would be non-interactive, or "visual" like Devo just said. Ok then, I like it.
I believe it could be done in 2 ways.
1- Now the first large map uselessly shows empty positions. IE, Spring 1901:
http://www.vdiplomacy.com/map.php?
gameID=10851&turn=-1&mapType=large
while Spring 1901 moves are actually on the second large map.
If it would be possible to "shift" all turns so that Spring 1901's large map showed Spring 1901 moves & retreats, Fall 1901 showed Fall 1901 moves retreats and builds... and so on... then the last current map would be void and avaliable to show the current moves you saved.
2- Add a button that opens such a large map.
Thoughts anyone?
Oli?