Сталин 
if(history.pushState){
$(window).on('popstate', function(event){
var loc = event.location || ( event.originalEvent && event.originalEvent.location )|| document.location;
ajaxNav(loc.href);
});
$('body').on('click', 'a[data-ajax]', function(){
var url = $(this).attr('href');
history.pushState(url, $('#title-page').text(), url);
ajaxNav(url);
return false;
});
}
function ajaxNav(url){
$('#ajax-container').load(url+ ' #ajax-container', function(){
document.title = $('#title-page').text();
});
}