default method causes error in IE7

[boxxxie]

i'm not sure exactly why, as my college discovered this bug.

[hughfdjackson]

I assume that this is because it's a reserved word; not valid as an identifierName (i.e. the name of a property) until es5: http://es5.github.com/#x7.6.1.

[julien-f]

You should be able to use the dynamic syntax:

stopLightColor['default'](function () { return 'unknown'; });