Make corner cell behave like column heading
I have modified the 'corner' cell so that I can sort on the row heading data. I would like to modify the style of the cell so that it behaves like the normal column headings, i.e. when you click on it the border changes to make it look like a push button.
Do I change the template settings in my OnClick handler, or is there some better way?
I can't work out how to do this - can anyone help a novice??