Flash selection based pop up menu(s) AS2 in Flash Pro CS3

I am constructing an interactive flash map of the USA. I have a vector flash map drawn and vectorized to my satisfaction. Each state(as in U.S states) is set up as a standard flash button. Each state button is assigned an instance name example: Washington State is assigned the instance name wab California is assigned the instance name cab and so on. In the case of Washington State the wa in wab stands for the typical abbreviation of Washington State, the b stands for button.
I would like the map to have the following interaction when user passes the pointer over a state I would like a menu to appear. I would like the menu to contain a list of vendor companies within that state. I would like the menu to remain available as long as it has pointer focus so the user can select a link.
Here is what I can do :
I can produce xml in this form if the solution is best served using XML (I suspect it is). Please feel free to point out errors or foreseeable problems with this structure.
<?xml version="1.0" encoding='UTF-8'?>
<states>
<state>
<stname>Washington</stname>
<coname>Joeco</coname>
<couri>www.joeco.com</couri>
</state>
<state>
<stname>Washington</stname>
<coname>Sueco</coname>
<couri>www.Sueco.com</couri>
</state>
</states>

I can handle the graphics though it would be excellent if the menu box expanded with contents.
Thanks!