Moving three movie clips together to a y co-ordinate of an event click

I have 9 buttons (with instance names mov_1 - mov_9) verticle along a page. I want movie clips a, b and c. with instance names (ltop, graphic and lbottom). to move in parrallel down the page to the y co-ordinates of each of the 9 button movie clips when clicked on. My code so far for each of the cases is:

  public function onClicked( e:MouseEvent ):void

  {

   var circle:MovieClip = e.currentTarget as MovieClip;

   HtmlTextFieldFactory.formatTextFields(  [panel.title, panel.content], this.context );

   switch( circle )

   {

    case mov_1:

     panel.title.htmlText = _modelDataHelper.getTextAssets( "ct1" );

     panel.content.htmlText = _modelDataHelper.getTextAssets( "c1" );

     panel.x = 30;

     panel.y = 438;

     circle.alpha = 1;

     circle.removeEventListener(MouseEvent.MOUSE_OUT, onMouseOut );

     circle.removeEventListener(MouseEvent.MOUSE_OVER, onMouseOver );

     var mov_1_y:Number = mov_1.y;

     var myTween1a:Tween = new Tween(graphic, "scaleY", Strong.easeOut, graphic.scaleY, 1, 2, true);

     var myTween1b:Tween = new Tween(graphic, "y", Strong.easeOut, graphic.y, mov_1_y, 2, true);

     var myTween1c:Tween = new Tween(ltop, "y", Strong.easeOut, ltop.y, graphic.y, 2, true);

     var myTween1d:Tween = new Tween(lbottom, "y", Strong.easeOut, lbottom.y, graphic.y + 135, 2, true);

     break;

Currently on one click of mov_1, graphic moves to the correct place. But it takes a second click before ltop and lbottom move to the correct place. I am needing them to move at the same time, together.

Any suggestions?

Thanks