Animation UpButton scrolling

JS Up Button

	<script type="text/javascript">
		$(document).ready(function(){		
			$(window).scroll(function(){
				if ($(this).scrollTop() > 100) {
					$('.scrollup').fadeIn();
				} else {
					$('.scrollup').fadeOut();
				}
			});			 
			$('.scrollup').click(function(){
				$("html, body").animate({ scrollTop: 0 }, 600);
				return false;
			});	
		});
	</script><!--Animation UpButton scrolling-->