var btn02:Sprite = new Sprite();
btn02.graphics.beginFill(0x0000FF);
btn02.graphics.drawRoundRect(20, 90, 45, 45, 15, 15);
btn02.graphics.endFill();
btn02.filters = [new DropShadowFilter(4, 45, 0x999999, 3, 5, 5, 1, 1, false, false, false)];
addChild(btn02);