Assalamualaikum and annyeonghaseyo. Credit to NAJ. Just follow these steps :) Problem? Ask me at the sidebar.

1. Dashboard > Template > Edit HTML
2. Click Ctrl + F, then find this code <head>
3. Copy paste this code under the code <head>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">
<script type='text/javascript' language='Javascript'>
var scrolltotop={
//startline: Integer. Number of pixels from top of doc scrollbar is scrolled before showing control
//scrollto: Keyword (Integer, or "Scroll_to_Element_ID"). How far to scroll document up when control is clicked on (1=top).
setting: {startline:100, scrollto: 0, scrollduration:1000, fadeduration:[500, 100]},
controlHTML: '<img src="URL IMG"/>', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol"
controlattrs: {offsetx:5, offsety:5}, //offset of control relative to right/ center of window corner
anchorkeyword: '#top', //Enter href value of HTML anchors on the page that should also act as "Scroll Up" links
state: {isvisible:false, shouldvisible:false},
if (!this.cssfixedsupport) //if control is positioned using JavaScript
this.$control.css({opacity:0}) //hide control immediately after clicking it
var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto)
if (typeof dest=="string" && jQuery('#'+dest).length==1) //check element set by string exists
this.$body.animate({scrollTop: dest}, this.setting.scrollduration);
var $window=jQuery(window)
var controlx=$window.scrollLeft() + $window.width() - this.$control.width() - this.controlattrs.offsetx
var controly=$window.scrollTop() + $window.height() - this.$control.height() - this.controlattrs.offsety
this.$control.css({left:controlx+'px', top:controly+'px'})
var scrolltop=jQuery(window).scrollTop()
if (!this.cssfixedsupport)
this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false
if (this.state.shouldvisible && !this.state.isvisible){
this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0])
else if (this.state.shouldvisible==false && this.state.isvisible){
this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1])
var mainobj=scrolltotop
var iebrws=document.all
mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest //not IE or IE7+ browsers in standards mode
mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body')
mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
.css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
.attr({title:"Let's Fly High !"})
.click(function(){mainobj.scrollup(); return false})
if (document.all && !window.XMLHttpRequest && mainobj.$control.text()!='') //loose check for IE6 and below, plus whether control contains any text
mainobj.$control.css({width:mainobj.$control.width()}) //IE6- seems to require an explicit width on a DIV containing text
$('a[href="' + mainobj.anchorkeyword +'"]').click(function(){
return false
$(window).bind('scroll resize', function(e){
 4. Preview and save.
Blue: change with your URL image

Template Designer

1. Dashboard > Design > Edit HTML > Tick Expand Widgets
2. Click ctrl + f , then find this code </body>
3. Copy paste this code above the code </body>
<a href='#' id='toTop'><img src='URL IMG?t=1292762029' style='border:0;'/></a>
4. Then find this code ]]></b:skin>
5. Copy paste this code above the code ]]></b:skin>
/* to top */#toTop { width:100px;background:none;border:0px solid #ccc;text-align:center;padding:5px;position:fixed;bottom:10px;right:10px;cursor:pointer;color:#666;text-decoration:none; }
6. Then find this code </head>
7. Copy paste this code above the code </head>
 <script src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js' type='text/javascript'></script><script type='text/javascript'>/*----------------------- * jQuery Plugin: Scroll to Top * by Craig Wilson, Ph.Creative (http://www.ph-creative.com) * Bring to you by Zen from http://zenplate.blogspot.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 * Do not delete these infomation * 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(); }); 
8. Preview then save =P