导航栏中怎么屏蔽onmouseover和onmouseout中的代码？？

去掉是
document.all.图标按纽ID.detachEvent("onmouseover",函数名称);加上是
document.all.图标按纽ID.attachEvent("onmouseover",函数名称);

解决方案 »

免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货

<style>
.overcss {border:1px solid}
.downcss  {border:2px solid}
</style>
<body onload="objdown()">
<img src="search.gif" id="search" onmousedown="objdown()">
<img src="user.gif" id="user" onmousedown="objdown()">
<img src="help.gif" id="help" onmousedown="objdown()">
<script>
var img = document.getElementsByTagName("img");
function objdown(s)
{
detachall();
    for(var i=0;i<img.length;i++)
{
    img[i].attachEvent("onmouseover",overHandler)
img[i].attachEvent("onmouseout",outHandler)
}
if(event.srcElement)
{
    event.srcElement.className="downcss"
event.srcElement.detachEvent("onmouseover",overHandler)
    event.srcElement.detachEvent("onmouseout",outHandler)
}
}function detachall()
{
    for(var i=0;i<img.length;i++)
{
    img[i].detachEvent("onmouseover",overHandler)
    img[i].detachEvent("onmouseout",outHandler)
img[i].className=""
    }
}function overHandler()
{
    event.srcElement.className="overcss"
}function outHandler()
{
event.srcElement.className=""
}
</script>
灰豆宝宝.net
写得非常清楚。
修改一下.<style>
.overcss {border:1px solid}
.downcss  {border:2px solid}
</style>
<body onload="objdown()">

<table id="tb">
<tr><td>
<img src="search.gif" id="search" onmousedown="objdown()">
<img src="user.gif" id="user" onmousedown="objdown()">
<img src="help.gif" id="help" onmousedown="objdown()">
</td></tr>
</table>
<br>
<img src="baby.gif">
<script>
var img = tb.getElementsByTagName("img");
function objdown(s)
{
    detachall();
    for(var i=0;i<img.length;i++)
    {
       img[i].attachEvent("onmouseover",overHandler)
       img[i].attachEvent("onmouseout",outHandler)
   }
   if(event.srcElement)
   {
      event.srcElement.className="downcss"
      event.srcElement.detachEvent("onmouseover",overHandler)
      event.srcElement.detachEvent("onmouseout",outHandler)
   }
}function detachall()
{
    for(var i=0;i<img.length;i++)
   {
       img[i].detachEvent("onmouseover",overHandler)
       img[i].detachEvent("onmouseout",outHandler)
       img[i].className=""
    }
}function overHandler()
{
    event.srcElement.className="overcss"
}function outHandler()
{
   event.srcElement.className=""
}
</script>
to：wanghr100(灰豆宝宝.net)
我不是用的CSS。
我是用的图片（正常显示时是一个图片，高亮显示时是另一个图片（当然onmouseover时也是这个图片））。该怎么办？？多谢你！！
function objdown(s)
中s有什么作用啊？？<body onload="objdown()">没有此函数objdown()啊？？
只有带一个参数的函数objdown(s)多谢！！
只有带一个参数的函数objdown(s)  //测试时候用的.后来去掉了,不要加参数啦.
图片
search.gif  初始状态
search_over.gif 鼠标移过.
search_down.gif 鼠标按下.<body onload="objdown()">

<table id="tb">
<tr><td>
<img src="search.gif" id="search" onmousedown="objdown()">
<img src="user.gif" id="user" onmousedown="objdown()">
<img src="help.gif" id="help" onmousedown="objdown()">
</td></tr>
</table>
<br>
<img src="baby.gif">
<script>
var img = tb.getElementsByTagName("img");
function objdown()
{
    detachall();
    for(var i=0;i<img.length;i++)
    {
       img[i].attachEvent("onmouseover",overHandler)
       img[i].attachEvent("onmouseout",outHandler)
   }
   if(event.srcElement)
   {
      var id = event.srcElement.id;
      event.srcElement.src=id+"_down.gif"
      event.srcElement.detachEvent("onmouseover",overHandler)
      event.srcElement.detachEvent("onmouseout",outHandler)
   }
}function detachall()
{
    for(var i=0;i<img.length;i++)
   {
       var id = img[i].id
       img[i].detachEvent("onmouseover",overHandler)
       img[i].detachEvent("onmouseout",outHandler)
       img[i].src=id+".gif";
    }
}function overHandler()
{
      var id = event.srcElement.id;
      event.srcElement.src=id+"_over.gif"
}function outHandler()
{
   var id = event.srcElement.id;
   event.srcElement.src=id+".gif";
}
</script>