Scroll to a Specific Child in a Container
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Canvas width="800" height="600"> <mx:Script> private function changeScrollToShowChild():void { vbox.verticalScrollPosition = (getChildrenHeight((comboBox.selectedItem as Number)+1)) - vbox.height + 40; } private function getChildrenHeight(index:int):Number { var i:int = 0; var sumHeight:Number = 0; while(i<index){ sumHeight += vbox.getChildAt(i).height; i = i +1; } return sumHeight; } </mx:Script> <mx:ComboBox id="comboBox" change="changeScrollToShowChild()"> <mx:dataProvider> <mx:Array> <mx:Number>1</mx:Number> <mx:Number>2</mx:Number> <mx:Number>3</mx:Number> </mx:Array> </mx:dataProvider> </mx:ComboBox> <mx:VBox width="650" height="300" id="vbox" backgroundColor="#0000ff" y="50" verticalScrollPolicy="off" paddingLeft="50"> <mx:Panel height="150" width="550"> <mx:LinkButton label="First"/> </mx:Panel> <mx:Panel height="160" width="550"> <mx:LinkButton label="Second"/> </mx:Panel> <mx:Panel height="110" width="550"> <mx:LinkButton label="Third"/> </mx:Panel> </mx:VBox> </mx:Canvas> </mx:Application>