I\'m relatively new to jQuery, but so far what I\'ve seen I like. What I want is for a div (or any element) to be across the top of the page as if \"position: fixed\" worked
For those browsers that do support "position: fixed" you can simply use javascript (jQuery) to change the position to "fixed" when scrolling. This eliminates the jumpiness when scrolling with the $(window).scroll(function()) solutions listed here.
Ben Nadel demonstrates this in his tutorial: Creating A Sometimes-Fixed-Position Element With jQuery