www.gusucode.com > 200套html5精品模板151_200 > 200套html5精品模板151_200/177/js/scrollToTop.js

    $(document).ready(function() {

	$("a.back-to-top").click(function() {
		$("html, body").animate({
			scrollTop: $($(this).attr("href")).offset().top + "px"
		}, {
			duration: 400,
			easing: "swing"
		});
		return false;
	});

});