tab切换

<style type="text/css">
body,div,ul,li{ padding:0; text-align:center; }
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;}
/*选项卡1*/
#Tab1{ width:460px; margin:0px; padding:0px; margin:0 auto;}
/*选项卡2*/
#Tab2{ width:576px; margin:0px; padding:0px; margin:0 auto;}
/*菜单class*/
.Menubox { width:100%; background:url(http://www.jb51.net/upload/small/20079299441652.gif); height:28px; line-height:28px; }
 .Menubox ul{ margin:0px; padding:0px; }
 .Menubox li{ float:left; display:block; cursor:pointer; width:114px; text-align:center; color:#949694; font-weight:bold; }
 .Menubox li.hover{ padding:0px; background:#fff; width:116px; border-left:1px solid #A8C29F; border-top:1px solid #A8C29F; border-right:1px solid #A8C29F; background:url(http://www.jb51.net/upload/small/200792994426548.gif); color:#739242; font-weight:bold; height:27px; line-height:27px; }
 .Contentbox{ clear:both; margin-top:0px; border:1px solid #A8C29F; border-top:none; height:181px; text-align:center; padding-top:8px; } --></style>
<script>
 function setTab(name,cursel,n){
  for(i=1;i<=n;i++){
   var menu=document.getElementById(name+i);
   var con=document.getElementById("con_"+name+"_"+i);
   menu.className=i==cursel?"hover":""; con.style.display=i==cursel?"block":"none";
   }
 } //-->
</script>
<div id="Tab1">
 <div class="Menubox">
     <ul>
      <li id="one1" onClick="setTab('one',1,4)" class="hover">新闻1</li>
            <li id="one2" onClick="setTab('one',2,4)" >新闻2</li>
            <li id="one3" onClick="setTab('one',3,4)">新闻3</li>
            <li id="one4" onClick="setTab('one',4,4)">新闻4</li>
        </ul>
    </div>
    <div class="Contentbox">
     <div id="con_one_1" class="hover">新闻列表1</div>
        <div id="con_one_2" style="display:none">新闻列表2</div>
        <div id="con_one_3" style="display:none">新闻列表3</div>
        <div id="con_one_4" style="display:none">新闻列表4</div>
    </div>
</div>
<!--第二个tab-->
<div id="Tab2">
 <div class="Menubox">
     <ul>
         <li id="two1" onClick="setTab('two',1,4)" class="hover">新闻1</li>
            <li id="two2" onClick="setTab('two',2,4)" >新闻2</li>
            <li id="two3" onClick="setTab('two',3,4)">新闻3</li>
            <li id="two4" onClick="setTab('two',4,4)">新闻4</li>
        </ul>
   </div>
    <div class="Contentbox">
        <div id="con_two_1" >新闻列表1</div>
        <div id="con_two_2" style="display:none">新闻列表2</div>
        <div id="con_two_3" style="display:none">新闻列表3</div>
        <div id="con_two_4" style="display:none">新闻列表4</div>
     </div>
</div>