How To Modify Trigger To Show Time Stamp.

Down below is my tables.
If I want to add time stamp in log_old_val table.
what value in log_old_val and cone in trigger have to be modified?

thanks


************************************************** *****

--main table
> create table test (manufacturer varchar(500), score int)
> insert into test values('Toyota', 1 )
> insert into test values('Toyota', 2)
>
> --logging table
>
> create table log_old_val(manufacturer varchar(500), score int, operation
> varchar(10))
>
> --trigger to log old value into log_old_val table.
> create trigger tr_man on test
> for update,delete
> as
> if @@rowcount = 0
> return
> if exists (select * from inserted)
> if exists (select * from deleted)
> insert into log_old_val
> select manufacturer,score, 'update' from deleted
>
> if exists (select * from deleted)
> if not exists (select * from inserted)
> insert into log_old_val
> select manufacturer,score, 'delete' from deleted
> go