AncientJS is a minimal History API implementation.

ancient.js

var ancientJS = {
	_bindUIEvents: function() {
		$("body").on("click", "a", this._linkPushed);
		$(window).on("popstate", this._onPopState);
	},

	init: function() {
		this._bindUIEvents();
	},

	_linkPushed: function(e) {
		if (!!window.history &&
			typeof(window.history.pushState) == 'function'){
			e.preventDefault();
			ancientJS._pushState(
				{
					url: window.location.href
				},
				window.location.href,
				$(this).attr("href")
			);
		} else {
            		window.location = $(this).attr("href");
        	}
	},

	_goTo: function(url, state) {
	    $.get(url, function(data){
    		$("#blog").html(data);
    		document.title = $("#blog h1").text();
	    })
	},

	_pushState: function(data, title, url) {
	    history.pushState(data, title, url);
	    ancientJS._goTo(window.location.href, data);
	},

	_onPopState: function(e) {
		if(!e.originalEvent.state){
			history.replaceState("NULL", document.title, window.location.href);
			return;
		}

	    ancientJS._goTo(window.location.href, e.originalEvent.state);
	}

};

ancientJS.init();