Or just have the user load a rom locally, like I do with my little NES ROM painter[0]. Nintendo strikes down hard on emulation like this. Although I see why he chose DKC, that is one beautiful GBC game.

[0]http://www.mattgreer.org/exercise/1nespaint

okay, removed offending ROMs, and put up a homebrew one: http://www.grantgalitz.org/CrazyZone/

The URL linked above now redirects to the homebrew ROM.

Edit: Oops, I overwrote the redirect, sorry. Try http://www.grantgalitz.org/CrazyZone/