I have to change a module joomla link map customized and make same change.
All of this work is whit flash image whit this impostation:
1 If i selected one region became big that region and i can select the city link of this region.
2 On the right will be the name of the region if i selection i can see all city there are under region like an menu.
3 Module search where i can put number of cap adress i can go to the link page of that city adress.
All things have to be to customize by administrator.
For any question contact me.