hcSticky is a cross-browser jQuery plugin that makes any element on your page float.
It is used for sidebars on long pages, so they can be visible all the time user scrolls down the page, instead of a empty space visitors usually see. It is also used for floating top menus, emphasizing it to the user at all time.
It is designed to be flexible, but very easy to use. hcSticky applied to a content makes it fixed on the page and always visible no matter how high the page is, or how high the sticky content is. Its packed with many interesting features in case you need them.