Euler Virtual Tour
You are now using Java.
Shift + left-click and ctrl + left-click to zoom.
All software to make and display these panoramas is open source.
The spherical panorama viewers are PTViewer (java applet) and pan0 (Flash 9). The equirectangular panoramas are assembled with hugin, from images made with the smc Pentax DA 10-17mm on a handheld K100D.