Is Fixed Columns Plugin (v.2.0.3) supposed to have IE7 support?

I have alot of issues using the plugin with IE7.
Complex headers does not seem to work.
This example fails: http://datatables.net/release-datatables/extras/FixedColumns/rowspan.html

There is also issues with the row matching. I do not have a good example right now but this one fails pretty bad, maby because of the same issues: http://datatables.net/release-datatables/extras/FixedColumns/row_grouping_height.html

Any advice? Except "do NOT not use IE7!" :-)