jqplugin ui.totop
jqplugin easing
puts {
<script type=text/javascript>
	$(document).ready(function() {
		$().UItoTop({easingType: 'easeOutQuart'});
		$('.backtotop').click(function() {
			$('html, body').animate({scrollTop: 0}, 500);
		});
	});
</script>
}
