scroliing down to specific section on click code example

Example 1: how can when click buton scrool to another elemtn

$("button").click(function() {
    $('html,body').animate({
        scrollTop: $(".second").offset().top},
        'slow');
});

// example: http://jsfiddle.net/ryXFt/3/

Example 2: scroll to specific div

$(window).scroll(function() {
    $('html, body').animate({
        scrollTop: $("#myDiv").offset().top
    }, 2000);
});