title: Fancybox: Add Caption and other things
body: <p>I'd like to know how I can add more than a title (e.g a caption or a link) to the fancybox.
  I am aware that if I add a title="Bla" it'll show up in the box. But if I add something like caption="Blabla" to my image link, what code do I need to have in jquery.fancybox.js to pull that caption tag?</p>