这个网页的第二个标签怎么写进内容去？
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.<html xmlns="http://www.
<head>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312" />
<title>简洁Tab</title>
<style type="text/css">
<!--
body,div,ul,li{
margin:0 auto;
padding:0;
}
body{
font:12px "宋体";
text-align:center;
}
a:link{
color:#00F;
text-decoration:none;
}
a:visited {
color: #00F;
text-decoration:none;
}
a:hover {
color: #c00;
text-decoration:underline;
}
ul{
list-style:none;
}
.main{
clear:both;
padding:8px;
text-align:center;
}
.menu2box{
position:relative;
overflow:hidden;
height:22px;
width:400px;
text-align:left;
background: #FFFFff;
}
#tabs2 {
height: 200px;
width: 400px;
border: 1px solid #cbcbcb;
background-color: #f2f6fb;
}
#tip2{
position:absolute;
top:0;
left:0;
height:22px;
line-height:22px;
z-index:0;
width:100px;
background: #f2f6fb;
}
#menu2{
position:absolute;
top:0;
left:0;
z-index:1;
}
#menu2 li{
display:block;
float: left;
padding: 4px 0;
width:100px;
text-align: center;
cursor:pointer;
}
-->
</style>
<script>
<!--
var m3={0:"",1:"评论内容",2:"技术内容",3:"点评内容"}
function nowtab(m,n){
if(n!=0&&m3[0]=="")m3[0]=document.getElementById("main2").innerHTML;
document.getElementById("tip"+m).style.left=n*100+'px';
document.getElementById("main2").innerHTML=m3[n];
}
//-->
</script>
</head>
<body>
<br />
<br />
<div id="tabs2">
<div class="menu2box">
<div id="tip2"></div>
<ul id="menu2">
<li class="hover" onmouseover="nowtab(2,0)"><a href="#">新闻</a></li>
<li onmouseover="nowtab(2,1)"><a href="#">评论</a></li>
<li onmouseover="nowtab(2,2)"><a href="#">技术</a></li>
<li onmouseover="nowtab(2,3)"><a href="#">点评</a></li>
</ul>
</div>
<div class="main" id="main2">
新闻内容
</div>
</div>
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
</body>
</html>
就是“评论”那个选择卡里怎么写入内容？
