$(document).ready(function(){

    $('#nav li a').click(function(){

        var el = $(this).attr('href');
        var elWrapped = $(el);

        scrollToDiv(elWrapped,40);

        return false;

    });

    function scrollToDiv(element,navheight){
        var offset = element.offset();
        var offsetTop = offset.top;
        var totalScroll = offsetTop - 80 + "px";

        $('body,html').animate({
                scrollTop: totalScroll
        }, 500);

    }



});