I hacked the 404 page with some client side javascript - http://www.romainbrasier.fr/404.php?lang=en

Lemmings Game Hack

function hoverImage($image){
  var images = $('img');
	if(images == 1) {
		clearTimeout(hoverImage);
	}
	for(var i=0,len=images.length;i<len;i=i+1) { 
		$(images[i]).trigger("mouseenter")
	} 
        	setTimeout(hoverImage,100);
};            
hoverImage();