On a whim, I changed a few lines of code (less than 10?) across a few files so that you don't need to adjust your resolution settings anymore. Apparently I had been ignoring the relative attribute of the CSS position property, which has allowed me to contain absolutely positioned .sprites within the #game-area.

Since the resolution setting now serves no purpose, it may as well be removed (although the geek in me loves those kinds of statistics).

If there are any problems (wonky zones), please let me know.

Enjoy.