<div class="htmlarea"> <textarea id="runcode42457"> <script language="javascript"> <!-- function clock(){i=i-1 document.title="本窗口将在"+i+"秒后自动关闭!"; if(i>0)setTimeout("clock();",1000); else self.close();} var i=20 clock(); //--> </script> </textarea><br><input onclick="runEx('runcode42457')" type="button" value="运行代码"> <input onclick="doCopy('runcode42457')" type="button" value="复制代码"> <input onclick="doSave(runcode42457)" type="button" value="保存代码">[Ctrl+A 全选 注:<a href="http://www.jb51.net/article/23421.htm" title="查看具体详情" target="_blank">如需引入外部Js需刷新才能执行</a>]</div>
