I have seen this on websites before where the website will be one page. And you have to scroll down our sideways to view the different sections of the website like "about", "contact" etc. But when you scroll the background scrolls slower than the foreground. King of like how the android phones work when you swipe home screens and the background moves just a little bit. I heard it was done using JavaScript but I have Google my brain off and cannot find much on it. Any help? Please move if I am indeed in the wrong section.