cellIndex of a <th> element

[Colin Williams]

I'm trying to use get the cellIndex of a table header cell with .cellIndex.
Unfortunatly it returns -1. Can anybody tell me how to get the th cell
index?

http://www.w3.org/TR/REC-DOM-Level-1/level-one-html.html#ID-82915075

[Boris Zbarsky]

Post by Colin Williams
I'm trying to use get the cellIndex of a table header cell with .cellIndex.
Unfortunatly it returns -1.

In what situation? Can you link to a testcase?

-Boris