How to rewrite URL without refresh, like GitHub.com

Question

I was browsing GitHub.com and I noticed when looking at the source for a repository, and you click on a file, the source code slides in and the URL changes, but it doesn\'t

Answer 1

I found this article which explains these HTML5 features - window.history.pushState(), window.history.replaceState() and the onpopstate() event: http://www.spoiledmilk.dk/blog/?p=1922

As the article mentions, Flickr is also using this technique in several places.