$(document).ready(function(){
    $("#screenshots div").hide();
    $("#screenshots div.listings").show();
    $("#screenshots-menu li.listings").addClass("active");
    $("#screenshots-menu li").click(function() {
        $("#screenshots-menu li").removeClass("active");
        var elid = $(this).attr('class');
        $("#screenshots-menu li." + elid + "").addClass("active");
        $("#screenshots div").hide();
        $("#screenshots div." + elid + "").fadeIn(1100);
   });
});