<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title> New Document </title>
<style type="text/css">
.wrap{width:120px;border:1px solid orange}
*{padding:0;margin:0;}
ul{list-style:none}
ul ul{display:none}
#list .pore{position:relative;}
#list .pore ul{position:absolute;top:0;right:-122px;width:120px;border:1px solid green;overflow:hidden}
#list .pore ul li a{display:block;height:20px}
</style> <script type="text/javascript">
var timer = null;
var arr = ["list"];
function mouseElem(){
this.getElementsByTagName("ul")[0].style.display = "block";
this.nextSibling.nextSibling.getElementsByTagName("ul")[0].style.display = "none";
this.previousSibling.previousSibling.getElementsByTagName("ul")[0].style.display = "none";
}
function mouseoutElem(){
var that = this;
timer = setTimeout(
function (){that.getElementsByTagName("ul")[0].style.display = "none";},10000);
} function list(){
for(var i=0; i<arr.length; i++){
var item = document.getElementById(arr[i]).getElementsByTagName("ul");
for(var j=0; j<item.length; j++){
item[j].parentNode.onmouseover = mouseElem;
item[j].parentNode.onmouseout = mouseoutElem;
}
}
}
window.onload = list;
</script> </head> <body>
<div class="wrap">
<ul id="list">
<li class="pore">
<a href="">标题</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题1</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题2</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
<html>
<head>
<title> New Document </title>
<style type="text/css">
.wrap{width:120px;border:1px solid orange}
*{padding:0;margin:0;}
ul{list-style:none}
ul ul{display:none}
#list .pore{position:relative;}
#list .pore ul{position:absolute;top:0;right:-122px;width:120px;border:1px solid green;overflow:hidden}
#list .pore ul li a{display:block;height:20px}
</style> <script type="text/javascript">
var timer = null;
var arr = ["list"];
function mouseElem(){
this.getElementsByTagName("ul")[0].style.display = "block";
this.nextSibling.nextSibling.getElementsByTagName("ul")[0].style.display = "none";
this.previousSibling.previousSibling.getElementsByTagName("ul")[0].style.display = "none";
}
function mouseoutElem(){
var that = this;
timer = setTimeout(
function (){that.getElementsByTagName("ul")[0].style.display = "none";},10000);
} function list(){
for(var i=0; i<arr.length; i++){
var item = document.getElementById(arr[i]).getElementsByTagName("ul");
for(var j=0; j<item.length; j++){
item[j].parentNode.onmouseover = mouseElem;
item[j].parentNode.onmouseout = mouseoutElem;
}
}
}
window.onload = list;
</script> </head> <body>
<div class="wrap">
<ul id="list">
<li class="pore">
<a href="">标题</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题1</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题2</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
<html>
<head>
<title> New Document </title>
<style type="text/css">
.wrap{width:120px;border:1px solid orange}
*{padding:0;margin:0;}
ul{list-style:none}
ul ul{display:none}
#list .pore{position:relative;}
#list .pore ul{position:absolute;top:0;right:-122px;width:120px;border:1px solid green;overflow:hidden}
#list .pore ul li a{display:block;height:20px}
</style> <script type="text/javascript">
var old = null;
var timer = null;
var arr = ["list"];
function mouseElem(){
if(old) old.style.display="none"
this.getElementsByTagName("ul")[0].style.display = "block";
old = this.getElementsByTagName("ul")[0]
//this.nextSibling.nextSibling.getElementsByTagName("ul")[0].style.display = "none";
//this.previousSibling.previousSibling.getElementsByTagName("ul")[0].style.display = "none";
}
function mouseoutElem(){
var that = this;
old.style.display="none"
// timer = setTimeout(
//function (){that.getElementsByTagName("ul")[0].style.display = "none";},10000);
} function list(){
for(var i=0; i<arr.length; i++){
var item = document.getElementById(arr[i]).getElementsByTagName("ul");
for(var j=0; j<item.length; j++){
item[j].parentNode.onmouseover = mouseElem;
item[j].parentNode.onmouseout = mouseoutElem;
}
}
}
window.onload = list;
</script> </head> <body>
<div class="wrap">
<ul id="list">
<li class="pore">
<a href="">标题</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题1</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
<li class="pore">
<a href="">标题2</a>
<ul>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
<li><a href="">列表</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
就为了这个问题.我才设置setTimeout的
var that = this;
//old.style.display="none"
}你不想让他关掉就把那句注释掉好了