$(document).ready(function() {
  $("a[rel=example_group]").fancybox({
    'transitionIn'      : 'none',
    'transitionOut'     : 'none',
    'titlePosition'     : 'over',
    'titleFormat'       : function(title, currentArray, currentIndex, currentOpts) {
        return '<span id="fancybox-title-over">' +  title + '</span>';
    }
  });
});