Pjax module
Easily enable fast Ajax navigation on any website
... the browser's current URL using pushState() without reloading your page's layout or any resources (JS, CSS), giving a fast page load. It works with all permalinks and can update all the parts of the page you want (including HTML metas, title, and navigation state). It listens to every click on links you want (by default all of them). When an internal link is clicked, Pjax fetches the page's HTML via AJAX.