loadContent.js

  function loadContent(href, pushState) {
    var el = $('<div></div>');

    el.load(href + ' .placeholder', function (response, status, xhr) {
      if (status === 'error') {
        w.location = href; 
      } else {
        if (pushState) {
          window.history.pushState({}, document.title, href);
        }
        var currentPage = $('.placeholder'); 
        var nextPage = el.find('.placeholder');

        overrideLinks(nextPage[0]);
        $(d.body).append(nextPage);
        nextPage.css('left', $(w).innerWidth())

        currentPage.animate({ left: -$(w).innerWidth()}, 500, function () {
          currentPage.remove(); 
        });
        nextPage.animate({ left: 0}, 500, function () {
          //TODO: What more after switch pages
          // HOWTO inform google analytics
        });
      }
    })