editing cells in tfoot

I'm trying to alter/change the content of a cell in a row that is in the tfoot section... somehow.

I've tried most, if not all IE DOM methods, including swapNode(), replaceNode(), and replaceChild(), and have tried the <object>.innerHTML, and <object>.innerText properties also.

I am starting to believe that the objects contained in the tfoot are read-only, even though I debugged, and showed that the content was different after my attempt(s)...

Any ideas? (thanks)

-Andrew