How to scale the Stage to fit the screen?

Question

Currtent code dosen't work very well. Any better solution? Thanks,
var videoHDWidth:Number = 1024;
var videoHDHeight:Number = 768;
var videoRegWidth:Number = 550;
var videoRegHeight:Number = 400;
// 3. Create an event handler to toggle full screen
// mode when a button is clicked.
function toggleFullScreen(event:MouseEvent):void {
    // Jump to full screen
    if( stage.displayState == StageDisplayState.NORMAL ) {
        // Set video to 100% size
        flvControl.setSize(videoHDWidth, videoHDHeight);
        // Position button
        // Activate hardware scaling based on HD state...
        stage.fullScreenSourceRect = new Rectangle(0, 0, videoHDWidth, videoHDHeight);
        stage.displayState = StageDisplayState.FULL_SCREEN;
    // Return to normal size
    else{
        // Set video to regular size
        flvControl.setSize(videoRegWidth, videoRegHeight);
        // Position button
        // Return to normal mode
        stage.displayState = StageDisplayState.NORMAL;
//fullscreen_btn.addEventListener(MouseEvent.CLICK, toggleFullScreen);
// 4. Resume normal mode if the Escape button is pressed during full screen
function resumeNormalMode(event:FullScreenEvent):void
    // The displayState is already 'normal' by the time this
    // event fires. This signals that the Escape button was clicked.
    if (stage.displayState == StageDisplayState.NORMAL)
        // Set video to regular size
        flvControl.setSize(videoRegWidth, videoRegHeight);
        // Position button ;
        // Return to normal mode
        stage.displayState = StageDisplayState.NORMAL;
stage.addEventListener(FullScreenEvent.FULL_SCREEN, resumeNormalMode);
// 5. Set video parametes
flvControl.align = VideoAlign.CENTER;
flvControl.scaleMode = VideoScaleMode.MAINTAIN_ASPECT_RATIO;
flvControl.fullScreenTakeOver = false;

Answer 1

Error "mc is not defined for: mc.contextMenu = fullscreenCM;
I changed as:
this.contextMenu = fullscreenCM;
Run it without error but it dosen't work out for full screen issue. Thanks,
Refered from Exploring full-screen mode in Flash Player | Adobe Developer Connection
// functions to enter and leave full screen mode;
function goFullScreen(event:ContextMenuEvent):void
    stage.displayState = StageDisplayState.FULL_SCREEN;
// An alternate full-screen function that uses hardware scaling to display the upper left corner of the stage in full screen.
function goScaledFullScreen()
    var screenRectangle:Rectangle = new Rectangle(0,0,stage.stageWidth / 2,stage.stageHeight / 2);
    stage.fullScreenSourceRect = screenRectangle;
    stage.displayState = StageDisplayState.FULL_SCREEN;
function exitFullScreen(event:ContextMenuEvent):void
    stage.displayState = StageDisplayState.NORMAL;
// function to enable and disable the context menu items,
// based on what mode we are in.
function menuHandler(event:ContextMenuEvent):void
    if (stage.displayState == StageDisplayState.NORMAL)
        event.target.customItems[0].enabled = true;
        event.target.customItems[1].enabled = false;
    else
        event.target.customItems[0].enabled = false;
        event.target.customItems[1].enabled = true;
// create the context menu, remove the built-in items,
// and add our custom items
var fullscreenCM:ContextMenu = new ContextMenu();
fullscreenCM.addEventListener(ContextMenuEvent.MENU_SELECT, menuHandler);
fullscreenCM.hideBuiltInItems();
var fs:ContextMenuItem = new ContextMenuItem("Go Full Screen");
fs.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, goFullScreen);
fullscreenCM.customItems.push( fs );
var xfs:ContextMenuItem = new ContextMenuItem("Exit Full Screen");
xfs.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, exitFullScreen);
fullscreenCM.customItems.push( xfs );
// finally, attach the context menu to a movieclip
mc.contextMenu = fullscreenCM;  -->error