FLUID Positioning question =)

Hi, I’m new to AS 3.0 and I don’t get this fluid thing fully.

Everything works fine when I want my movieclip to align to the middle of the screen but when I try to make a button (or any movieclip) always align to bottom right I can’t figure out how. Here’s my AS, how do I make the “ball_mc” align bottom left?

[SIZE=1]import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;

stage.addEventListener(Event.RESIZE, resizeListener);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;

var xTween:Tween;
var yTween:Tween;

function resizeListener (e:Event):void {
trace("stageWidth: " + stage.stageWidth + " stageHeight: " + stage.stageHeight);
xTween = new Tween (ball_mc, “x”, Elastic.easeOut, ball_mc.x, (stage.stageWidth / 2), 2, true);
yTween = new Tween (ball_mc, “y”, Elastic.easeOut, ball_mc.y, (stage.stageHeight / 2), 2, true);
} [/SIZE]

Here’s an example of how I want my movieclip to get placed, (like the “fullscreen” button): http://www.rmdinteractive.com/

Thanks for reading! [SIZE=1]pls don’t hate me for being dumb[/SIZE]

[SIZE=3]/[/SIZE]iLies