Resize handler / liquid GUI

I am trying to make a liquid gui layout (i think this is what it’s called).
Anyway, I have done part of this, but I’m having trouble figuring out how to position movieclips that aren’t on the stage.
These movieclips have linkage ID’s and are being called when you click on a button.

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

function resizeHandler(event:Event=null):void
	var sw:Number = stage.stageWidth;
	var sh:Number = stage.stageHeight;

	stripe.width = sw;
	stripe.x = sw * .5;
	bars.width = sw;
	bars.x = sw * .5 ;
	bars.y = sh * .5 ;

	SiteGroup.x = 210;
	SiteGroup.y = sh * .4 ;


var weddingsPage:PageWeddings = new pageWeddings();

The linkage ID name is: pageWeddings

When you click on the button “weddings”, it loads “pageWeddings”.
I want to position this somehow.