Need action script

Hai to all, i was created a balloon shooter game in flash i completed in a balloon move and target shooter (mouse) then score and time with action script its working. but still i need a last end of the game i create a game over and your score its --, but i dont want this type of game over. i need a score matching gifts that is your score 5 to 15, your gift img1, or your score 15 to 25 your gift img2 or your score 25 to 35, your gift img3, how much score it comes! that one its give a action script go to that frame. so i need action script tutorials completley.please help me.