ActionScript 3.0 :: Movie Looping After Starting Syntax With Stop Command, No Compiler And Syntax Errors?

using action script...
 
stop();btn001_btn.addEventListener(MouseEvent.CLICK,showimage1);function showimage1(event:MouseEvent):void { gotoAndPlay(10);}btn002_btn.addEventListener(MouseEvent.CLICK,showimage2);function showimage2(event:MouseEvent):void { gotoAndPlay(20);}
 
however movie is playing without stopping to "Listen" for a Mouse CLICK. Images placed at frame 10 and 20 should appear only when CLICK'd.
 
This code is straight out of Classroom in a Book CS4.