How do i allow Tab key functionality to work in Mozilla, where in i am calling javascript funcation

Hi All,


How do i allow Tab key functionality to work in Mozilla, where in i am calling javascript funcation from server side (C#) on keypress.

On calling the function in client side we have the solution, as onkeypress="if(event.keycode !=9) return jsfuction();"
but how do i achive in server side?

Please guide me on this.

Regards,
mahe