Code : Lên hay xuống :
<center>
<div id='top-buttom_image'>
<a href=javascript:scroll(0,0)' title= Vé dau trang'><img alt='Lén dau trang’ border='2'
src="http://farm4 static flickr.com/3496/3463533286 ee8ffe62cd_o.gif
"></a><br/>
<a href='javascript:scroll(0,9999999)' title='Về cuối trang '><img alt=Xuống cuối trang' border=2! src=”http://farm4.static.flickr.com/3583/3437500265_ 69cea7f1f2_o.gIf
"></a>
</div>
</center>