<!--{if !$_G['setting']['forumdisplaythreadpreview'] && !($thread['readperm'] && $thread['readperm'] > $_G['group']['readaccess'] && !$_G['forum']['ismoderator'] && $thread['authorid'] != $_G['uid'])}-->
<!--{if !(!empty($_G['setting']['antitheft']['allow']) && empty($_G['setting']['antitheft']['disable']['thread']) && empty($_G['forum']['noantitheft']))}-->
<a class="tdpre y" href="javascript:void(0);" onclick="previewThread('{echo $thread['moved'] ? $thread[closed] : $thread[tid]}', '$thread[id]');">{lang preview}</a>
<!--{/if}-->
<!--{/if}-->
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包含viewthread_preview.htm页面的html元素tr、td不在模板里，在/static/js/forum.js约600行
    newTr = document.createElement('tr');
    newTr.id = 'threadPreviewTR_'+tid;
    newTr.className = 'threadpre';
    $(tbody).appendChild(newTr);
    newTd = document.createElement('td');
    newTd.colSpan = listcolspan;
    newTd.className = 'threadpretd';
    newTr.appendChild(newTd);
    newTr.style.display = 'none';
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