How to Display SUM of numbers in a specified column?

Hi
I want to display total in footer Immediately when I change a number.
how to do this?

I found it Myself! cheers!

Look also at this post if you need Excel-like 'formula' support -

http://www.activewidgets.com/javascript.forum.20911.6/calculated-columns-cell-formula.html

Hi Ashkan Can u Please Tell Me