I'm trying to print the board of some games I'm playing, and I'm running in this minor problem.
When printing the board, the lack squares are not printed.
To reproduce this bug:
1. Start your Mozilla 1.5 browser and log in TimeForChess;
2. Choose one game in My Games.
3. Click on Print Board.
4. Print the resulting page.
I tested it with Internet Explorer, and the bug doesn't appears, so I'm not sure the bug is in the TimeForChess Print Board feature. As a suggestion, what about using another GIF to represent the black square when the browser is Mozilla?