/* Up header----------------------------------------------*/
#toTop {
width:100px;
color:#000; /*cor da letra*/
background:#eee; /*cor de fundo*/
border:1px solid #ccc;/*cor da bordas*/
text-align:center;
padding:5px;
position:fixed;
bottom:10px;
right:10px;
text-decoration:none;
}


2. Agora procure por </body> e cole o código abaixo, em cima de </body>:



<a href='#' id='toTop'><span class='Apple-style-span' style='font-family: Arial, Helvetica, sans-serif;'>▲ Ir para Topo</span></a> 
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js' type='text/javascript'/> 
<script type='text/javascript'> 
/*-----------------------
* jQuery Plugin: Scroll to Top
* by Craig Wilson, Ph.Creative (http://www.ph-creative.com)
*
* Copyright (c) 2009 Ph.Creative Ltd.
* Description: Adds an unobtrusive "Scroll to Top" link to your page with smooth scrolling.
* For usage instructions and version updates to go http://blog.ph-creative.com/post/jquery-plugin-scroll-to-top.aspx
*
* Version: 1.0, 12/03/2009
-----------------------*/


$(function(){$.fn.scrollToTop=function(){$(this).hide().removeAttr("href");if($(window).scrollTop()!="0"){$(this).fadeIn("slow")}var scrollDiv=$(this);$(window).scroll(function(){if($(window).scrollTop()=="0"){$(scrollDiv).fadeOut("slow")}else{$(scrollDiv).fadeIn("slow")}});$(this).click(function(){$("html, body").animate({scrollTop:0},"slow")})}});


$(function() {
$("#toTop").scrollToTop();
});
</script>