[Bug 20246] Provide a system to observe nodes entering and leaving the viewport

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20246

--- Comment #3 from Marcos Caceres <w3c@marcosc.com> ---
@lousremi thanks for the links, they are helpful (if you find any more, please
add them as they serve as a evidence for the need of this). 

Regarding images, this might be relevant to the discussion:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=17842

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Received on Wednesday, 5 December 2012 16:38:00 UTC