The first suggestion is to rename `{handle, capture}Mousewheel` to `{handle, capture}Wheel` since it's the standard...

I wouldn't bother much with it just because Chrome is going to implement the standard, however, we can just add it to the prototype at the end of the file: `TranslateComposer.prototype.{handle, capture}Mousewheel = TranslateComposer.prototype.{handle, capture}Wheel`
What do you think?