Once loaded, the image will automatically revolve. If you would like
to stop the automatic view, click your mouse inside the image, then
while holding your mouse button down, move your mouse either left
or right, up or down, to 'look' around the panorama.

Zoom In - press and hold the 'shift' key then click inside the image.
Zoom Out- press and hold the 'control' (ctrl) key then click inside
the image.