Proportionaly scaling down background image when restoring down browser window

Question

Hi all, i need some help, i want to minimize(scale or restore down) window to not-fullscreen browser window (and ajusting size of window manually over arrows in the corners of the window) and retain background picture full size (i need to picture proportionally follows screen scaling).
I`m new into flash stuff, so please tell me if it is the code or what, and if you know part of code that will do the job, write me down!
Thanks!

Answer 1

I take it you want a liquid effect.  I wrote a site that does that or rather the background of this site does that http://www.droolpigs.com/ .  It's fairly simple just tell the backrgound to change width and height on stage resize.
    public class NuPigs2 extends MovieClip
        var holder:btnHolder; // container for nav buttons
        var onStage:*;     // this can be anything
        var ratio:Number;
        var rRatio:Number;
        var newRatio:Number;
        var com:FLVPlayback;
        var bkg:*;
        public function NuPigs2(){
            com = new FLVPlayback();
            setCom("droolPigsWrestling.flv");                     // set the video for player com
            addChildAt(com, 0);
            stage.align = StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;    // this is needed for resizing to work
            onStage = com;                                                   //  the video player is assigned to onStage
            ratio = onStage.height/onStage.width;
            rRatio = onStage.width/onStage.height;
            addHolder();
            fillBG();
            stage.addEventListener(Event.RESIZE, fillBG);
////////////////////// FILL BG ////////////////////////   
// this code makes the video resize with the stage
        function fillBG(evt:Event = null):void {
            newRatio = this.stage.stageHeight/this.stage.stageWidth;
            holder.x = this.stage.stageWidth - (holder.width +25);    // position the buttons on the right
            holder.y = 50;
            if (newRatio > ratio){
                 onStage.height = this.stage.stageHeight;
                 onStage.width = (this.stage.stageHeight * rRatio);
                else {
                  onStage.width = this.stage.stageWidth;
                  onStage.height = this.stage.stageWidth * ratio;