Proper URLs that SEO and load with javascript and AJAX updated data

.htaccess

# This should take everything in the path and pass it to the index file as the path get varible
RewriteEngine On
RewriteCond %{REQUEST_URI} !index.php
RewriteRule (.*) index.php?page=$1 [QSA,L]

# More explanation : http://fatfolderdesign.com/583/php/ajax-sites-with-real-url-using-history-pushstate

index.php

/* This will load the file at the path in the appropriate section, inside a div for the ajax to do it's thing */
if($_GET['path']==''){
	$_GET['path']=='home';
	echo '<div id="ajaxable_content">';
}
if($_POST['ajax_load']!='true'){
	require_once('inc/header.php');
}
require_once($_GET['path'].'.php');
if($_POST['ajax_load']!='true'){
	echo '</div>';
	require_once('inc/footer.php');
}

/* More explanation : http://fatfolderdesign.com/583/php/ajax-sites-with-real-url-using-history-pushstate */

script.js

// This will take a url and add update the users browser to display it without redirecting, and load the next function
function ajax_goto(url){
	history.pushState("","New Page Title",url);
	ajax_load(url);
}

// This will load the requested content by access the index with the post variable ajax_load
function ajax_load(url){
	$.ajax({
		url: url,
		method: 'POST',
		data: 'ajax_load=true',
		success: function(o){
			$('#ajaxable_content').html(o);
		}
	})
}

// More explanation : http://fatfolderdesign.com/583/php/ajax-sites-with-real-url-using-history-pushstate