$(".product-filter li").first().addClass("active");var productShow=$(".product-filter li.active a img").attr("src").replace("200_200","400_400");$("#product-image img").attr("src",productShow);$(".product-filter ul li a").click(function(){$(".product-filter ul li").removeClass("active");$(this).parent().addClass("active");productShow=$(this).find("img").attr("src").replace("200_200","400_400");$("#product-image img").fadeOut(300,function(){$("#product-image img").attr("src",productShow).fadeIn(300)})})