<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Ipa-Acn</title>
<style type="text/css">
.menu{ margin-right:18px;}
.menu
</style><script src="jquery.js"></script><script>
var menu = [ [{url:"http://www.baidu.com",name:"baidu",css:"menu"},{url:"http://www.qq.com",name:"qq",css:"menu"}], [{url:"http://www.google.com",name:"google",css:"menu"},{url:"http://www.taobao.com",name:"taobao",css:"menu"}] ]function Show(id){ var o = document.getElementById("SubMenu");o.style.visibility='visible'; var list = menu[id]; var str =""; for(i=0; i<list.length;i++) { str += "<a href='"+list[i].url+"' class='"+list[i].css+"' >"+list[i].name+"</a> "; 
} o.innerHTML=str;}function Hidden(){ var o = document.getElementById("SubMenu"); o.style.visibility='hidden';}</script></head><body><div onmouseover='Hidden()'>header</div> <div id="Menu"><a href="#" OnMouseOver="Show(0)">abc</a> <a href="#" OnMouseOver="Show(1)" >kk kkkk</a> </div> <div id="SubMenu" style="height:30px; border:solid #FF0000" ></div><div onmouseover='Hidden()'>bode</div></body></html>因为其它的浏览器不支持onmouseleave事件。。所有只能在菜单的周围加上onmouseover的事件用它来隐藏菜单
----lovebanyi lookcode.net
打开新页面的时候希望可以保留 菜单（或子菜单）选中的样式
请删掉 Hidden()函数 并加入以下的代码
function loadMenu(){ var o = document.getElementById("SubMenu"); var url = document.location.href; var temp = url.split('/'); var page= temp[temp.length-1].toLowerCase(); for(i=0;i<menu.length;i++) { var item = menu[i]; for(j=0;j<item.length;j++) { var url = item[j].url.toLowerCase(); if (url==page) { item[j].css +=" current"; //alert(item[j].css); show(i); return; } } }}current 样式是鼠标移过去的样式。
loadMenu请在body中加载
<body onload="loadMenu()">
menu只需要放到 masterpage就可以了