Changing V8 internals to get event listener access to mouse4, mouse5, etc

[Christopher Hall]

If I could get a rough estimate as to what files in V8 (I think thats where I need to look) I would need to change in order to support more than the traditional 3 mouse buttons, that would be awesome. I'll look at the source code, try some stuff, and query back if I need more help from there.