Quick question does any one know any ideas how i would go about creating this effect where the images slide over the top of each.. Just need some pointers to start me off havent really got a clue where to start..

http://denicler.eu/en/lookbooks/1

manged to stack my images using postion abosolute and z index but cant get my images to scroll over each other.. :s any suggestions guys

$(document).ready( function() {
$(window).scroll( function() {
if ($(window).scrollTop() > $('#lookbook img').offset().top)
$('#lookbook img').addClass('fixed');
else
$('#lookbook img').removeClass('fixed');
} );

} );