It's extremely simple. Only a few actions and lines of krpano coding. Unfortunately polygon hotspots aren't yet available in html5 so that part doesn't work on ipads.
A better interface would be nice with titles so it can be navigated without frustration. And autorotation that doesn't ever stop gives me the heebie jeebies. I don't even like it on my own tours. I love the scenes though! The hadron collider is freaking huge!