discuz 帖内调用主题相关帖子代码

<!--{if $post['relateitem']}-->        <div class="mtw mbw">                <h3 class="pbm mbm bbda">{lang related_thread}</h3>                <ul class="xl xl2 cl">                        <!--{loop $post['relateitem'] $var}-->                        <li>• <a href="forum.php?mod=viewthread&tid=$var[tid]" title="$var[subject]" target="_blank">$var[subject]</a></li>                        <!--{/loop}-->                </ul>        </div><!--{/if}-->