删除上一主题 下一主题打印，并添加上一篇下一篇功能！
1.删除上一主题下一主题还有打印功能，打开模版目录./template/default/forum/viewthread.htm删除以下代码即可！[*] <!--{if !IS_ROBOT}-->
[*] <div class="y">
[*] <!--{if $post['invisible'] == 0}--><a href="forum.php?mod=viewthread&action=printable&tid=$_G" title="{lang thread_printable}" target="_blank"><img src="{IMGDIR}/print.png" alt="{lang thread_printable}" class="vm" /></a>
[*] <!--{/if}-->
[*] <a href="forum.php?mod=redirect&goto=nextoldset&tid=$_G" title="{lang last_thread}"><img src="{IMGDIR}/thread-prev.png" alt="{lang last_thread}" class="vm" /></a>
[*] <a href="forum.php?mod=redirect&goto=nextnewset&tid=$_G" title="{lang next_thread}"><img src="{IMGDIR}/thread-next.png" alt="{lang next_thread}" class="vm" /></a>
[*] </div> <!--{/if}-->
2.添加上一篇下一篇
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<!--{elseif $_G == 1}-->
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[*]<!--上一篇下一篇-->
[*] <!--{eval $next_t=DB::fetch_first("SELECT tid,subject from ".DB::table('forum_thread')." where fid='$_G' and tid>'$_G' and displayorder >= 0 order by tid asc limit 1");}-->
[*] <!--{eval $up_t=DB::fetch_first("SELECT tid,subject from ".DB::table('forum_thread')." where fid='$_G' and tid<'$_G' and displayorder >= 0 order by tid desc limit 1");}-->
[*] <div class="t_navigation">
[*] <p class="up_t">
[*] <em>上一篇:</em>
[*] <!--{if empty($up_t)}-->
[*] <span style="font-size: 14px">已经是最后一篇</span>
[*] <!--{else}-->
[*] <a href="/thread-<!--{eval echo $up_t;}-->-1-1.html"><!--{eval echo $up_t;}--></a>
[*] <!--{/if}-->
[*] </p>
[*] <p class="next_t">
[*] <em>下一篇:</em>
[*] <!--{if empty($next_t)}-->
[*] <span style="font-size: 14px">已经是最新一篇</span>
[*] <!--{else}-->
[*] <a href="/thread-<!--{eval echo $next_t;}-->-1-1.html"><!--{eval echo $next_t;}--></a>
[*] <!--{/if}-->
[*] </p>
[*] </div> <!--上一篇下一篇end-->
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[*]/*----------上一篇下一篇----------*/
[*].t_navigation a{
[*] font-size: 14px;
[*] color:#333;
[*] vertical-align: middle;
[*] text-decoration: none;
[*]}
[*].t_navigation a:hover{
[*] color:red;
[*]}
[*].up_t{
[*] margin:20px 0 10px 0;
[*] overflow: hidden;
[*] line-height: 22px;
[*]}
[*].up_t em{
[*] font-size: 12px;
[*] color:#ffffff;
[*] padding: 1px 9px 3px 7px;
[*] margin:0 10px 5px 0;
[*] background: #3DA2C2;
[*] border-radius:4px 4px 4px 4px;
[*]}
[*].next_t{
[*] margin:5px 0 5px 0;
[*] overflow: hidden;
[*] line-height: 22px;
[*]}
[*].next_t em{
[*] font-size: 12px;
[*] color:#ffffff;
[*] padding: 1px 9px 3px 7px;
[*] margin:0 10px 5px 0;
[*] background: #3DA2C2;
[*] border-radius:4px 4px 4px 4px;
[*]}/*----------上一篇下一篇end----------*/
来源：https://www.dismall.com/thread-24832-1-1.html
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