Pita/etherpad-lite — pull request #279 by ryrun (2011-12-07 13:27:37+00:00)
Title: Speed up line numbering of huge pads. Tested on chrome and firefox.

...with more than 6000 lines will be loaded fast. It refresh first all current line numbers, then creates new with DocumentFragment and style.height info. Reflow(rebuild and rendering of dom) will be reduced to one for new ones, instead for each ones.