Type them in at the title screen, but be fast !!!!
SSSLLRRS Fast rainbow BLRBJSBJ Shoe (go faster) RJSBJSBR Two rainbows BJBJBJRS Hint LJLSLBLS Another hint SJBLRJSR Unlimited continues (up to level 6) LBSJRLJL Continues after level 6 RRLLBBJS Dollars but boni RRRRSBSJ Dollars and continues SRBJSLSB Surprise