[whatwg] Window events that bubble?

Section 6.5.9 "History Traversal" defines popstate and hashchange events 
  that are fired on the Window object. It specifies that these events 
*must* bubble.  Where should they bubble to?  What does it mean to 
bubble up from a Window?  These events aren't going across frames, are they?

Is the specification that they must bubble a formality because existing 
implementations set the bubbles property of the Event object to true? 
Or does it actually have some impact on event propagation?

Thanks,

	David

Received on Monday, 17 May 2010 15:07:29 UTC