Hi there. I have a team of developers who can make this software like picture puzzle. Thjey are experts in asp.net, html, 2D and 3D, php etc. Also we have done a elevator project before (offline application).
So by the look of things it does appear that, it should be an easy task for us. So plz feel free to discuss further so that we can help you out with the exact work flow.
I am very eager for this as I know I can deliver you with a masterpiece.
Thanks