// JavaScript Document        
$(function comment() {
            var offset = $("#comment").offset();
            var topPadding = 100;
			var bottompadding = 0;
            $(window).scroll(function comment() {
                if ($(window).scrollTop() > offset.top) {
                    $("#comment").stop().animate({
                        marginTop: $(window).scrollTop() - offset.top + topPadding
                    });
                } else {
                    $("#comment").stop().animate({
                        marginTop: 100
                    });
                };
            });
        });