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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><style type="text/css">
#a_div { line-height:25px;font-weight:600;color:blue;}
#a_div ul { display:none;text-decoration:none;margin:0px;}
#a_div .ch_div { color:red;}
#a_div ul.ch_ul { display:block;}
</style><script type="text/javascript">
start=function()
{
var a=document.getElementById("a_div");
var b=a.getElementsByTagName("ul"); a.onmouseover=function(){ this.className="ch_div";b.className="ch_ul";}
a.onmouseout=function(){ this.className="";b.className="";}
}
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</script></head>
<body><div id="a_div" >导航
<ul>
<li>内容1</li>
<li>内容2</li>
</ul>
</div></body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><style type="text/css">
#a_div { line-height:25px;font-weight:600;color:blue;}
#a_div ul { display:none;text-decoration:none;margin:0px;}
#a_div .ch_div { color:red;}
#a_div ul.ch_ul { display:block;}
</style><script type="text/javascript">
start=function()
{
var a=document.getElementById("a_div");
var b=a.getElementsByTagName("ul"); a.onmouseover=function(){ this.className="ch_div";b.className="ch_ul";}
a.onmouseout=function(){ this.className="";b.className="";}
}
window.onload=start;
</script></head>
<body><div id="a_div" >导航
<ul>
<li>内容1</li>
<li>内容2</li>
</ul>
</div></body>
</html>
var b = a.getElementsByTagName("ul")[0];
你是说用什么编辑器么,我还是使用.NET编辑器写的
//getElementsByTagName得到的是数组
var b=a.getElementsByTagName("ul");
//这样设置就不对了
b.className="";