Eliminate sniffing from `getStyle`. `getOpacity` testing and branching is now encapsulated in `getOpacity` rather than in `getStyle`. Performance improvements. (kangax)
Eliminate sniffing from `getStyle`. `getOpacity` testing and branching is now encapsulated in `getOpacity` rather than in `getStyle`. Performance improvements. (kangax)

kangax/prototype,kangax/prototype