AJAX navigation that changes the location of the browser

I've been wondering for a while how github.com does it's navigation. If you enter a project in the FF4 (don't know if it works in FF3.6) or Chrome (only two I've confirmed working, haven't tested much more, but it doesn't 开发者_JAVA百科work in IE9) they have ajax-navigation (the new page is loaded in an ajax-request, and only the new content is exchanged on the client side), still the url changes. And it's not just the hash-part of the url, the actual url changes. How is this done?

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Full explanation from the GitHub team here:

https://github.com/blog/760-the-tree-slider

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if you want easy implementation of such navigation,

you could use https://github.com/binarymind/jquery-navigate

to test that, just add in your head after the jquery script :

<script type="text/javascript" src="https://raw.github.com/binarymind/jquery-navigate/master/navigate.js" ></script>

after just read the doc in the github and don't hesitate to ask me if any issue, would be pleased to help

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They might be using something like this:

jQuery, ASP.NET, and Browser History