Drupal Lightbox 2 not displaying image
as i see in the console, you are using jquery.min.js?v=1.9.1

and lightbox.js is giving this error: 


  TypeError: $.browser is undefined


because this function has been remove since 1.9

I'll suggest you to use default jquery version 1.4.2 where $.browser is deperecated but should work or use another ligtbox module like colorbox