[cssom-view] scroll events

 From the WHATWG list, by roc:

> In Gecko, it's just something that fires asynchronously
> after a node's scrollTop/scrollLeft have changed. Scroll
> events for the viewport fire at the document and bubble
> to the window, scroll events on elements with 'overflow'
> not 'visible' fire at that element and don't bubble."


-- 
Anne van Kesteren
http://annevankesteren.nl/