Has anyone figured out how to go from one pano to another seamlessly

Hi, I'm tossing this out as a help brainstornm session.. I need to be
able to go from an interior 360/180 to an exterior 360/180 and then
back into a second structure for a final 360/180.. and if the user
wants they can go back the other way.. I want to use a specific door on
each building for the entrance /exit portal and I think a user
clickable feature in the image to allow the portal to function.. When
it does it will incorporate a zoom and move feature.. (flash) to
transport the user to the adjacent 360 and start the loading.. So
basically I see it loading the transport module followed by the 360..

Any thoughts.. I sure would like to hear  em ..

thanks
jimbo