<script type="text/javascript">
    jQuery(function ($){
        $(document).ready(function(){
            $(".fancybox-thumbs").fancybox({
                padding: 0,
                margin: 10,
                closeBtn  : true,
                helpers :
                    {
                        title: {
                            position: 'top',
                                },
                        thumbs:
                            {
                             width  : 40,
                             height : 40,
                            }
                        },
                beforeShow : function() {
                        var alt = this.element.find('img').attr('alt');
                        this.inner.find('img').attr('alt', alt);
                        this.title = alt;
                    },
            });
        });
    });
</script>