The term Parallax is derived from Greek word, parallaxis, which means alteration. Modern web designs are frequently using the technique of parallax scrolling to move images, text around the web page frame to create interesting visual movements.
One page themes and templates using different parallax scrolling effects to zoom up or down on a very long single page is becoming common. These kinds of themes are very popular with the creative designers, web studios wanting to layout their portfolio, team info and contact details and everything else on one page by adding a cool parallax zooming effect to it. This type of navigational effects can also be created by using some jQuery Parallax Plugins.