Combobox's dropmenu scaling

I’m migrating these days to AS3.

The problem (I remember I had this problem also on AS2):

if you load a .swf that contains a combobox, into a mc in the main .swf, and you try to manipulate the scale of this container mc, the combox’s textfield will resize good while the combobox dropdown menu won’t resize and will keep its original value!

In AS2 i solved it by puting the combobox inside a mc “container” that also contains the code line this._lockroot=true;, and attaching this “container” to the swf using the attachMovie() method. I don’t know why, but it worked, and when i loaded this swf into a mc in the main swf and re-scaled that mc the combobox’s dropmenu scaled together with it.

In AS3 i find the same problem.

Does anybody have a solution?

I’m attaching the code I’m using:

Main.swf:
var container:Sprite=new Sprite();
addChild(container);
var loader:Loader=new Loader();
loader.load(new URLRequest(loaded.swf"));
container.addChild(loader);
container.scaleX=.6;
container.scaleY=.6;//combo’s dropmenu in loaded.swf will not resize