Comments in pano from the viewer

[Vestland]

Working on a museum-tour, I will have popup-windows when the mouse hoovers over a hotspot on the different museum objects seen in the pano. That is easy. However, the customer wants me to add a comments-field in the same popup-window, where the viewers can add their additional information regarding the object. All the comments on each object should be listed for the next viewer to read. I do not know how to do this. I guess it must involve some kind of database. Any ideas ?

[redlocktree]

I guess you have to work with i-frames. Something similar how to you add an contactform in the pano.