Pixels from top
<p>I'm working on a Facebook App that has a FancyBox (lightbox). The <code>iframe</code> is very long, and when you click an image, the lightbox shows at the middle of the <code>iframe</code> instead of the middle of the screen. </p>

<p>How do I get the amount of pixels that the browser has scrolled down?</p>

<p>/Kenneth B</p>
