Game Not Scrolling

Question

     So i've finished learning how to scroll and the book has challenged me to try parallax scrolling and to figure it out on my own. So i've tried to apply my previous scrolling knowledge (as little as it may be) at gave it an honest attempt. The problem is when I test it the player (named after my cat Vivace!) the player doesn't move. I'm also getting the following warnings.
"warning:1090: Migration issue: The onKeyDown event handler is not triggered automatically..."
and
"warning:1090: Migration issue: The onKeyDown event handler is not triggered automatically..."
The code is as follows:
package
          import flash.display.MovieClip;
          import flash.events.KeyboardEvent;
          import flash.ui.Keyboard;
          import flash.events.Event;
          public class Main extends MovieClip
                    var vx;
                    var hvx;
                    var rightInnerBoundary:uint;
                    var leftInnerBoundary:uint;
                    var housePage:HousePage;
                    public function Main();
                              init();
                    function init():void
                              //initilize Variables
                              vx = 0;
                              hvx = 0;
                              rightInnerBoundary = (stage.stageWidth / 2) + (stage.stageWidth / 4);
                              leftInnerBoundary = (stage.stageWidth / 2) - (stage.stageWidth / 4);
                              addChild(housePage);
                              //add Event Listeners
                              stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
                              stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
                              addEventListener(Event.ENTER_FRAME, onEnterFrame);
                    function onKeyDown(event:KeyboardEvent):void
                              if (event.keyCode == Keyboard.LEFT)
                                        vx = -5;
                                        hvx = -2.5;
                              else if (event.keyCode == Keyboard.RIGHT)
                                        vx = 5;
                                        hvx = 2.5;
                    function onKeyUp(event:KeyboardEvent):void
                              if (event.keyCode == Keyboard.LEFT || event.keyCode == Keyboard.RIGHT)
                                        vx = 0;
                                        hvx = 0;
                    function onEnterFrame(event:Event):void
                              //initialize local variables
                              var vivaceHalfWidth:uint = vivace.width / 2;
                              var backgroundHalfWidth:uint = background.width / 2;
                              //scroll player
                              vivace.x = vx;
                              //stop player at inner boundaries
                              if (vivace.x - vivaceHalfWidth < leftInnerBoundary)
                                        vivace.x = vivaceHalfWidth + leftInnerBoundary;
                                        rightInnerBoundary = (stage.stageWidth / 2) + (stage.stageWidth / 4);
                                        background.x -= vx;
                                        front.x -= vx;
                                        clouds.x -= hvx;
                              else if (vivace.x + vivaceHalfWidth > rightInnerBoundary)
                                        vivace.x = vivaceHalfWidth - rightInnerBoundary;
                                        leftInnerBoundary = (stage.stageWidth / 2) + (stage.stageWidth / 4);
                                        background.x -= vx;
                                        front.x -= vx;
                                        clouds.x -= hvx;
                              //stop background at stage edges
                              if (background.x + backgroundHalfWidth < stage.stageWidth)
                                        background.x = stage.stageWidth - backgroundHalfWidth;
                                        front.x = stage.stageWidth - backgroundHalfWidth;
                                        clouds.x = stage.stageWidth - backgroundHalfWidth;
                                        rightInnerBoundary = stage.stageWidth
                              else if (background.x - backgroundHalfWidth > 0)
                                        background.x = 0 + backgroundHalfWidth;
                                        front.x = 0 + backgroundHalfWidth;
                                        clouds.x = 0 + backgroundHalfWidth
                                        leftInnerBoundary = 0;

Answer 1

onKeyDown is a reserved term in as2. Thus the compiler seems irritated (Migration issue).
rename your Handlers into something more as3-like (keyDownHandler...)