Create a container page:

Load Pagify and jQuery:

<script src="jquery.min.js" type="text/javascript"></script>
<script src="pagify.js" type="text/javascript"></script> 

Create a div that will contain page content:

<div id='page_holder' />

Call pagify on the aforementioned div and pass in options. The only required option is pages.

$('#page_holder').pagify({ 
    pages: ['home', 'about', 'contact'], 
    default: 'home' // The name of a page or null for an empty div 
}); 

Link to other pages by linking to hashes of their page names:

<a href='#contact'>Contact</a> 
<a href='#about'>About</a> 
...

Write other pages

Create content pages in the same directory as the container as [page_name].html

i.e. about.html

<h1>About us</h1> 
<p>This is an about page!</p>