Photo Sphere was introduced for Android 4.2 and above, and it’s Google’s own 360-degree Panorama. But the thing was, you could share it only on Google+ or a device running on Android 4.2 platform or above.
Now, the Google+ widget gives you another way. It runs on the Google+ Platform API, you can embed a photo sphere, a 360-degree slideshow of your pictures, on any website of your choice. Only, your pictures should be stored on Google+ and PicasaWeb.
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Here is a simple web page which shows an example of how easy it is to put a proper photosphere gallery on your page AND this gallery can also show the map in the viewer. And it is pretty much a one liner to set up.
Example and source code can be found under https://sites.google.com/site/anynamethatisavailable/photospheres