FancyBox duplicate navigation remove
$(".fancybox-trigger").click(function() {
$("a[rel='" + $(this).data('trigger-rel') + "']").eq(0).trigger('click');
return false;
});
$(".fancybox").fancybox();
<a data-trigger-rel="gallery" class="fancybox-trigger" href="http://fancyapps.com/fancybox/demo/1_b.jpg"><img src="http://fancyapps.com/fancybox/demo/1_s.jpg" alt=""/></a>
<br />
<br />
<a rel="gallery" class="fancybox" href="http://fancyapps.com/fancybox/demo/1_b.jpg"><img src="http://fancyapps.com/fancybox/demo/1_s.jpg" alt=""/></a>
<a rel="gallery" class="fancybox" href="http://fancyapps.com/fancybox/demo/2_b.jpg"><img src="http://fancyapps.com/fancybox/demo/2_s.jpg" alt=""/></a>