Curtain.js is jQuery Plugin that allows you to create web page navigation scrolling effect. Curtain.js will creates an amusing effect, exactly like a curtain rises, when page is scrolled down.

navigation scrolling can be done with the keyboard, scrollbar, mouse wheel or by binding to a navigation area. A fixed panel can also be easily added to multiple navigation scrolling sections. The navigation scrolling speed can also be customised as an option.
Demo :http://curtain.victorcoulon.fr/
Download : https://github.com/Victa/curtain.js
License : MIT License