$(document).ready(function() {
        $("#gallery_med a").fancybox({ 'overlayOpacity': 0.8 }); 
        $("#gallery_med img").not(":first").hide();
        $("#gallery_th img:first").fadeTo("fast", .5);
        var $sel = $("#gallery_th img:first")
        
        $("#gallery_th a").click(function() {
        if ($("#" + this.rel).is(":hidden")) {
            if ($sel) $($sel).fadeTo("fast", 1);
                $(this).fadeTo("fast", .4);
                $sel = this;
                $("#gallery_med img").slideUp();
                $("#" + this.rel).slideDown();
            }
        });
    });


(function ($) { $.fn.extend({ center: function () { return this.each(function () { var top = ($(window).height() - $(this).outerHeight()) / 2; var left = ($(window).width() - $(this).outerWidth()) / 2; $(this).css({ position: 'fixed', margin: 0, top: (top > 0 ? top : 0) + 'px', left: (left > 0 ? left : 0) + 'px' }); }); } }); })(jQuery);