ScrollMagic is a jQuery plugin which essentially lets you use the scrollbar like a progress bar.
It’s the plugin for you, if you want to …
- … start an animation at a specific scroll position.
- … synchronize an animation to the scrollbar movement.
- … pin an element at a specific scroll position (sticky elements).
- … pin an element for a limited amount of scroll progress (sticky elements).
- … easily add a parallax effect to your website.
- … create an inifinitely scrolling page (ajax load of additional content).
- … call functions when the user hits certain scroll positions or react in any other way to the current scroll position.
Link:Â http://janpaepke.github.io/ScrollMagic/
Demo: on above site ; examples can be found here:Â http://janpaepke.github.io/ScrollMagic/examples/index.html