$(document).ready(function() {
$('#gallery a[href$=".jpg"]').attr('rel', 'gallery1'); //adds the 'rel' attribute to anchor elements in our div wrapper
            
    $('a[href$=".jpg"]').fancybox({
        'transitionIn' : 'elastic',
        'centerOnScroll' : true,
        'overlayColor' : '#000',
        'titlePosition' : 'over'
    }); // enable fancybox on all anchor elements with img child.
});