Update from select

PG 8.4

Having trouble putting together an update query to update
multiple columns in tbl1 from columns in tbl2.

update tbl1
set col3,col4,col5
from
(select col3, col4,col5 from tbl2 where col1="criteria")



Can someone add to the Postgres Docs (shown below) to help me with this.

UPDATE employees SET sales_count = sales_count + 1 WHERE id =
  (SELECT sales_person FROM accounts WHERE name = 'Acme Corporation');


Many thanks

Bret Stern