帖子列表页的帖子预览展示用的模板是/template/default/forum/viewthread_preview.htm，展示出来的楼层模板是同目录的viewthread_preview_node.htm
预览按钮是

<!--{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}-->复制代码

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';复制代码