Untitled

Scaling from the center in flash
function scaleFromCenter(dis:*, sX:Number, sY:Number):void
{
    var prevW:Number = dis.width;
    var prevH:Number = dis.height;
    dis.scaleX = sX;
    dis.scaleY = sY;
    dis.x += (prevW - dis.width) / 2;
    dis.y += (prevH - dis.height) / 2;
}

scaleFromCenter(yourMovieClip, 0.3, 0.3);

private function scaleInPosition(dis:Sprite,sX:Number,sY:Number):void
{
    var posX:Number = dis.x;
    var posY:Number = dis.y;
    dis.x =dis.y = 0;
    dis.scaleX = sX;
    dis.scaleY = sY;
    dis.x = posX;
    dis.y = posY;
}