DataTables/DataTables — pull request #98 by timtucker (2012-09-03 19:32:22+00:00)
Title: Update media/src/core/core.sort.js

Simplify and improve performance
- Only check once for the presence of any sorting class instead of checking for the 3 individual classes
- Use lastIndexOf(str, 0) instead of indexOf

http://jsperf.com/rep-reg-string/4