Code in frame 1 layer 1:

//killSprite.fla
//Demonstrates adding methods to sprites, 
//deleting them in real time

_root.attachMovie("ball", "theBall", 10);
theBall._x = 100;
theBall._y = 100;

theBall.onRelease = function(){
  this.removeMovieClip();
} // end onRelease