SitePen/dgrid — pull request #606 by allencblee1 (2013-05-27 22:48:27+00:00)
Title: Fix #597 - Down arrow key problem in Firefox 23/24

There is a problem in Firefox 23/24 when using simple assignment like cell.columnId = id to define property to dom objects. Use Object.defineProperty does not have such problem. So use this whenever Object.defineProperty exists.