Gallery Share and comment

Hey i was wondering if anyone knows how the owner of this site was able to do what he did with his gallery it has facebook share and like buttons with comments below would be very helpfull to find this information out
Thanks alot

here is the site : http://www.premierlife.ca/gallery/cabin-fever-wednesdays-jbrs-11-02-11/ jsut click on one of the thumbnails below.

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