Fixed The Users Browser Back Button Is Disabled Once They Access The Photo Overlay

The users browser back button is disabled (on second click) once they browse through the gallery all the way to the photo page, when using google chrome and apple computer.
e.g. Going
From
http://www.sonnb.com/gallery/
to
http://www.sonnb.com/gallery/albums/macrophotography.38/
to
http://www.sonnb.com/gallery/photos/211/
back to
http://www.sonnb.com/gallery/albums/macrophotography.38/
back to
X - Does not work

You need to follow the trail, to reproduce open the gallery using google chrome, then scroll down to one of the albums click, select a photo to trigger the overlay, click back to return to the album click back to return to the gallery. We are unable to return to the gallery.