sstephenson/prototype — pull request #49 by shagstrom (2012-03-22 18:57:15+00:00)
Title: DOM traversal performance improvements

I am using prototype on an application that displays a lot of data on the same page (20,000 input tags). prototype didn't perform well enough in IE, so I did some modifications.

I also had to implement event delegation. If you are interested we can integrate it with prototype https://github.com/shagstrom/delegatejs .