Interactive Map - any suggestions?

OK i will try to explain what i am doing…I am making an interactive map that starts by loading a swf with large overview map of a country into a map_holder_mc, and also loads some dynamic vars that define the ID, x, y and size of any number of little rectangular regions scattered all over the main map.

If you click on a region then a new map loads scaled to the size of the rectangle, fades up over the top of the old map, while the old map fades out, and then zooms in to full size. This new map will then load more little regions, and the process theoretically can go on forever…

Pointless? No…any map, once loaded, also can have any number of ‘hotspots’ or nodes that basically represent a place where someone stood and took a 360 panoramic…click on one and a 360 module loads so you can look around…thats a side point tho.

What i need help with is how to get the regions to load in smoothly over the top of the original map_holder_mc and yet finish up in map_holder_mc…If i make the regions on(release) load the new map in the map_holder_mc it replaces the old map, but i need it to fade up *over *the old map…if i load it into another movie clip on top of the old map, all the other AS i wrote for the map_holder_mc becomes useless…

Aaaarrrgghh!!! Im confused!!!

Any ideas? Even just an idea…throw me a bone…im not askin for code i just need a concept i can use to get around this ******…