How do you achieve the image scrolling effect at the top of this web page? Thank you_html/css_WEB-ITnose

This is it: http://www.nilock.com/2011/05/19/a-parallax-scrolling-demo/comment-page-1/

Please help me take a look, thank you , I am a newbie...

Reply to discussion (solution)

Constantly modify
background-position

Apply Made with js

These clouds are all the same picture, and then use JS to make them move. It looks layered. Both CSS3 and JS can do it!

$( function($) {	        var current = 0;		setInterval(function(){	       if(current==-6000) {current=0;}	       current -=600;	       $('#header-background').animate({backgroundPosition:current+"px 0px"},25000);	    },2500);	}) 

JScript code

$( function($) {
var current = 0;
setInterval( function(){
if(current==-6000) {current=0;}
current -=600;
$('#header-background').an......