#30 Mouse wheel to scroll objects deeper in the DOM

Unstable (example)
open
nobody
None
5
2009-05-07
2009-05-07
No

Consider case when there is DIV with overflow='scroll' deep inside the DOM structure. Then it gets properly renderered with scrollbars and these do work just fine but only for mouse-clicks. Mouse wheel only works for top-level RBlock. Please use this patch as inspiration for proper solution.

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