Not sure if you checked out these resources or not.
Popup menus:
http://www.udm4.com/demos/popup-relative.php
More info:
http://www.udm4.com/manual/depth/pop...mples-relative
My guess is that you have though. As far as running 2 menus on the same page, you would need to do everything as a popup style to get that effect and even then, mixing horizontal and vertical can be difficult.
As far as the menus not working, its probably a path issue. You're including the code from this site, but that usually is looking for some resources in the "/udm-resources/" folder, which needs to be on your server.
Hope this helps.