Fixes #4905.  For IE, replace the original node so null name values don't get submitted.
Fixes #4905.  For IE, replace the original node so null name values don't get submitted.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@11236 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful