Drop down menu is as3

I have attached the file for my dropdown menu.

If you click on item1. A whitebox appears that is the roll out area and this hides the sub. I think this is an old fashioned way to do this.

Can someone help me with a solution to creating this menu in actionscript 3.

I have searched for a tutorial but can only find an xml one which is not required for this project.

Many thanks for you help.

Why not use a Component?

which component? I can’t see a dd menu component

Here

This looks ok but the combobox submenu only appears on click. How do I make it appear on rollover. Also how can I make the submenu’s reurn a variable?