编辑template/default/common/footer.htm

删除155-169行代码：

<div id="scrolltop">

<!--{if $_G[fid] && $_G['mod'] == 'viewthread'}-->

<span><a href="forum.php?mod=post&action=reply&fid=$_G[fid]&tid=$_G[tid]&extra=$_GET[extra]&page=$page{if $_GET[from]}&from=$_GET[from]{/if}" onclick="showWindow('reply', this.href)"

class="replyfast" title="{lang fastreply}"><b>{lang fastreply}</b></a></span>

<!--{/if}-->

<span hidefocus="true"><a title="{lang scrolltop}" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>{lang scrolltop}</b></a></span>

<!--{if $_G[fid]}-->

<span>

<!--{if $_G['mod'] == 'viewthread'}-->

<a href="forum.php?mod=forumdisplay&fid=$_G[fid]" hidefocus="true" class="returnlist" title="{lang return_list}"><b>{lang return_list}</b></a>

<!--{else}-->

<a href="forum.php" hidefocus="true" class="returnboard" title="{lang return_forum}"><b>{lang return_forum}</b></a>

<!--{/if}-->

</span>

<!--{/if}-->

</div>

保存即可。