document.getElementsByTagName('html')[0].className = 'js'; // use the js class to only hide elements with css when js is enabled

$(function(){
  $("#nav li a, #project-nav li a").click(function(){
    var link = $(this).attr("href");
    $("#content").fadeOut(500, function(){
      window.location = link;
    });
    return false;
  });
});

$(window).load(function(){
  $("#content, h1").fadeIn(500);
});