howdy
see this page for info on creating a nadir logo to cover the tripod in a 360° video
http://www.kolor.com/wiki-en/action/view/Autopano_Video_-Nadir_patching?action=view&title=Autopano_Video-_Nadir_patching
to make hotspots linking to other panoramas in a virtual tour like in your example link, you would use an app like kolor panotour, krpano, pano2Vr, etc
sam