Scroller-example doesn't work on Win+Firefox

[judofyr]

From: https://news.ycombinator.com/item?id=10093762

edit: @judofyr, the Scroller example app doesn't work for me on Firefox 40.0.2 on Win 8. It works in Chrome.

[somebee]

It seems to be due to this: http://stackoverflow.com/questions/16788995/mousewheel-event-is-not-triggering-in-firefox-browser. Either we should not support the mousewheel-event at all, or we need to make mousewheel listener register differently in dom.events.

My mistake: https://developer.mozilla.org/en-US/docs/Web/Events/wheel should use the wheel event instead

[somebee]

This should now be fixed and pushed to the site.