How to overlay the scrolling html body

[chas]

i have seen a site that has a cutout overlay that show a scrolling html body underneath. does anyone know how to do it?

i am guessing JS

that is as if out watching the window and the outside world is moving by

[Nile]

Can you be more descriptive please, maybe a link to the page?

[chas]

well filesoup.co.uk had the skin but they removed it.

but its like a cardboard cutout over the top of the main page and the scrollbar is on the far right edge so it cant be iframe, (i dont think?)

Its like looking through the keyhole at the main page

[Nile]

Take a look at css position fix (http://www.w3schools.com/Css/pr_class_position.asp).