Which is the minimal width of the column in FireFox?

Hello guys

I need help. Which is the minimal width of a column of the grid in FireFox?
I need to guard additional information together with the records and I do not want that the above mentioned information will be visible for the user.

In IE I have put the definition of .active-column-0 {width: 0px;} and it works correctly, but in FireFox it does not work.

How I can solve this disadvantage?

Since already thank you very much

Regards

For some reason FF does not like width:0px so you should use display:none instead.