Back to top with twitter bootstrap markup

Back to top

a.backtotop{
    position: fixed;
	bottom: -4px;
	padding-bottom: 16px;
	right: 20px;
	width: 50px;
}
#top i{
	margin: 3px 0 0 5px ;
}


<a href="javascript:void(0)" class="backtotop btn btn-inverse" id="top">Back to Top <i class="icon-arrow-up icon-white"></i></a>




$(window).scroll(function() {// when the page is scrolled run this
    	if ($(this).scrollTop() != 0) {// if you're NOT at the top
			$('#top').fadeIn("fast");
			// fade in
		} else {// else
			$('#top').fadeOut("fast");
			// fade out
		}
	});