Waseem Daher b730dc7983 Huge speedup in get_next_visible/get_prev_visible. ...

nextAll/prevAll walks the entire DOM, basically.
This code only walks the DOM until we find a new .message_row.

This speeds up the average time of a call to this function from about
6.38ms to 0.678ms, in my benchmarking.

Admittedly, the whole outer loop here could still use some
optimization, if we want to; do we really need to call this 1000
times?

(imported from commit 852e2f660a16f8cfd7be35d3271aedb1ac481663)

2012-10-16 17:06:36 -04:00

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