Dynamic header bar - with shadow, what code is this?

[ImagesAndWords]

Hai guyz...
While reading Norwegian news sites, I came across this new design by Aftenposten.no. Notice how when you scroll down, a top navigation bar pops in and floats at the top with a nice shadow underneath it.

Any coders here reckognizing how this is done? I imagine it's a javascript of some kind. Links to a script/code that will do this = +Rep

Thanks!!

 

[Rexibit]

Basically, all they are doing is inserting an element to the DOM after the page has loaded and the listener determines that the browser has been scrolled away from x-amount at the top. It's not really that hard to accomplish and I wouldn't doubt that there's a jQuery library for it to help make the code cross-browser compatible.

Their code:

<nav class="smallHeader" id="smallHeader" style="display: block;"><div class="span12" id="innerSmallHeader"><a href="http://www.aftenposten.no/" class="floatLeft logo"><img alt="" src="http://www.aftenposten.no/skins/global/gfx/ap_logo_small.png"></a><nav class="widget topMenu standardMenu gridUnit topMainMenu floatLeft" data-widget-view="widgets.topMenu.standardMenu">
<ul class="clearfix">
<li class="">
<a target="_top" href="http://www.aftenposten.no/nyheter/uriks/" class="">
Verden
</a>
</li>
<li class=" activeSection">
<a target="_top" href="http://www.aftenposten.no/norge/" class="">
Norge
</a>
</li>
<li class="">
<a target="_top" href="http://www.oslopuls.no" class="">
Oslopuls
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/okonomi/" class="">
Økonomi
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/kultur/" class="">
Kultur
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/meninger/" class="">
Meninger
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/nytte/" class="">
Nytte
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/nyheter/sport/" class="">
Sport
</a>
</li>
<li class="">
<a target="_top" href="http://www.aftenposten.no/sitemap/" class="">
A-Å
</a>
</li>
</ul>
</nav></div></nav>

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[ImagesAndWords]

Thanks dude! +rep..