jQuery平滑滚动页面到某个锚点 From http://www.sharejs.com/codes/javascript/1089

scroll.js

$(document).ready(function() {
    $("a.topMap").click(function() {
        $("html, body").animate({
            scrollTop: $($(this).attr("href")).offset().top + "px"
        }, {
            duration: 500,
            easing: "swing"
        });
        return false;
    });
});