postgresql 8.01, plpgsql

i have the following function in plpgsql giving stynax errors all over 
the place.
i have doen createlang on the db, as far as i can see i'm right.  is 
there anything obviously wrong?
one thing to note is i followed this example 
http://www.zigo.dhs.org/postgresql/#insert_or_update and it gives the 
same errors.

"ERROR:  unterminated dollar-quoted string at or near "$$
BEGINLOOP"


CREATE OR REPLACE FUNCTION insert_update_daily_takings (ID BIGINT,
TillName VARCHAR,                                                       Tape NUMERIC(10,2),
                         Cash NUMERIC(10,2),                                                       GM NUMERIC(10,2),
                                                  VenueManager 
 
NUMERIC(10,2),                                                       AsstManager 
NUMERIC(10,2),                                                       BarManager 
NUMERIC(10,2),                                                       PRCards 
NUMERIC(10,2),                                                       otherPromo 
NUMERIC(10,2),                                                       Functions 
NUMERIC(10,2),                                                       Accounts 
NUMERIC(10,2),                                                       Spill NUMERIC(10,2),
                       Orings 
 
NUMERIC(10,2),                                                       Variance 
NUMERIC(10,2)
) RETURNS VOID AS
$$
BEGIN   LOOP       UPDATE daily_takings SET till_name = TillName,               tape = Tape,               cash = Cash,
             promo_manager = GM,               venue_manager = VenueManager,               asst_manager = AsstManager,
            bar_manager = BarManager,               pr_cards = PRCards,               other_promo = otherPromo,
     functions = Functions,               accounts = Accounts,               spill = Spill,               o_rings =
Orings,              variance = Variance               WHERE id = ID                AND till_name = TillName;       IF
foundTHEN           RETURN;       END IF;             BEGIN           INSERT INTO daily_takings (id,
till_name,              tape,               cash,               promo_manager,               venue_manager,
 asst_manager,               bar_manager,               pr_cards,               other_promo,               functions,
           accounts,               spill,               o_rings,               variance)           VALUES (ID,
        TillName,                   Tape,                   Cash,                   GM,                   VenueManager,
                 AsstManager,                   BarManager,                   PRCards,                   otherPromo,
              Functions,                   Accounts,                   Spill,                   Orings,
 Variance);           RETURN;       EXCEPTION WHEN unique_violation THEN           NULL       END;   END LOOP;
 
END;
$$
LANGUAGE plpgsql;