//ballOOP
//demonstrates turning ballMove into an Object-oriented program
ball.dx = 5;
ball.dy = 5;
ball.onEnterFrame = function(){
ball.move();
ball.checkBoundaries();
} // end enterFrame
ball.move = function(){
ball._x += ball.dx;
ball._y += ball.dy;
} // end move
ball.checkBoundaries = function(){
//do nothing for now
} // end