Overriding Cell Creation on DataGrid

I would like to use a custom server control that overrides the data grid control that can perform a jscript function when the user selects one of the buttons in the push button column.

How is this possible?

What function do I need to override?

Any examples around?

Thank you

David Stephen
[333 byte] By [David Stephen] at [2007-11-17 16:49:10]