$('input, select, textarea').on('focus', function() {;
        var that = $(this);
        $('html, body').animate({
            scrollTop: that.offset().top + that.height() / 2 - $(window).height() / 2
        }, 2000);
    });

    $('body,html').bind('scroll mousedown wheel DOMMouseScroll mousewheel keyup', function(e) {
        if (e.which > 0 || e.type == "mousedown" || e.type == "mousewheel") {
            $("html,body").stop();
        }
    });