问题,帮帮忙,谢谢,…………??

html自身可以实现 请将此代码插入在中之前. 其中content="30"是指每隔30秒刷新一次</td></tr></table> </div> <div id="post_rate_div_328399"></div> </div> </div> </td></tr> <tr><td class="postcontent postbottom"> <div id="ad_thread1_0"></div></td> </tr> <tr> <td class="postauthor"></td> <td class="postcontent"> <div class="postactions"> <div class="postact s_clear"> <em> </em> <p> <a href="javascript:;" onclick="scrollTo(0,0);">TOP</a> </p> </div> </div> </td> </tr> <tr class="threadad"> <td class="postauthor"></td> <td class="adcontent"> </td> </tr> </table> </div><div id="post_328402"><table id="pid328402" summary="pid328402" cellspacing="0" cellpadding="0"> <tr> <td class="postauthor" rowspan="2"> <div class="popupmenu_popup userinfopanel" id="userinfo328402" style="display: none; position: absolute;"> <div class="popavatar"> <div id="userinfo328402_ma"></div> <ul class="profile_side"> <li class="pm"><a href="pm.php?action=new&uid=40517" onclick="hideMenu('userinfo328402');showWindow('sendpm', this.href);return 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target="_blank"><img src="http://bbs.thysea.com/user/data/avatar/000/04/05/17_avatar_middle.jpg" onerror="this.onerror=null;this.src='http://bbs.thysea.com/user/images/noavatar_middle.gif'" /></a></div> <p><em><a href="faq.php?action=grouppermission&searchgroupid=10" target="_blank">黑海舰队列兵</a></em></p> </div> <p></p> <dl class="profile s_clear"><dt>主题</dt><dd>0 </dd><dt>积分</dt><dd>0 </dd><dt>贝壳</dt><dd>0 个 </dd><dt>来自</dt><dd>普陀区 </dd><dt>注册时间</dt><dd>2006-11-23 </dd><dt>最后登录</dt><dd>2006-11-23 </dd></dl></td> <td class="postcontent"> <div class="postinfo"> <strong><a title="复制本帖链接" id="postnum328402" href="javascript:;" onclick="setCopy('http://bbs.thysea.com/redirect.php?goto=findpost&ptid=49502&pid=328402', '帖子地址已经复制到剪贴板')">沙发</a> </strong> <div class="posterinfo"> <div class="pagecontrol"> </div> <div class="authorinfo"> <img class="authicon" id="authicon328402" src="images/common/online_member.gif" onclick="showauthor(this, 'userinfo328402');" /> <a href="space-uid-40517.html" class="posterlink" target="_blank">天空飞人</a><em id="authorposton328402">发表于 2005-10-28 23:37</em> | <a href="viewthread.php?tid=49502&page=1" rel="nofollow">显示全部帖子</a> </div> </div> </div> <div class="defaultpost"> <div id="ad_thread2_1"></div><div id="ad_thread3_1"></div><div id="ad_thread4_1"></div> <div class="postmessage "> <h2>问题,帮帮忙,谢谢,…………??</h2> <div class="t_msgfontfix"> <table cellspacing="0" cellpadding="0"><tr><td class="t_msgfont" id="postmessage_328402">不会。。。。我上面说的也应该还是属于javascript</td></tr></table> </div> <div id="post_rate_div_328402"></div> </div> </div> </td></tr> <tr><td class="postcontent postbottom"> <div id="ad_thread1_1"></div></td> </tr> <tr> <td class="postauthor"></td> <td class="postcontent"> <div class="postactions"> <div class="postact s_clear"> <em> </em> <p> <a href="javascript:;" onclick="scrollTo(0,0);">TOP</a> </p> </div> </div> </td> </tr> <tr class="threadad"> <td class="postauthor"></td> <td class="adcontent"> </td> </tr> </table> </div></div> <div 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