//Javascript Document

$(function() {

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

        var $anchor = $(this);

 

        $('html, body').stop().animate({

            scrollTop: $($anchor.attr('href')).offset().top

        }, 3500,'easeInOutExpo');

        /*

        if you don't want to use the easing effects:

        $('html, body').stop().animate({

            scrollTop: $($anchor.attr('href')).offset().top

        }, 1000);

        */

        event.preventDefault();

    });

});