Full size image not showing at uploaded resolution.

[TeeBoi]

Why doesn't my full size image appear at the uploaded resolution?  For example, all the images I upload to my gallery are 800px (on the long side) by 533px (on the short side), but when I try to view the full size pic I get a smaller version.  What am I doing wrong?  Here's a link to my gallery: http://photos.tylerhue.com.  Thanks in advance.

-tyler

[Fabricio Ferrero]

Your gallery is very outdated and you are in risk to be hacked, please, update to the most recent stable version now!

[Joachim Müller]

Why doesn't my full size image appear at the uploaded resolution? 

http://coppermine-gallery.net/demo/cpg14x/docs/faq.htm#noFullsizePopup applies, http://photos.tylerhue.com/scripts.js is missing!