一次偶然而无聊的实验，发现了这样的写下拉菜单的方式。完成作品后的愉悦心情，就像阿基米德泡浴缸却发现了浮力原理！
NAME:Stupid CAT Pull-down Menu v1.0
SUPPORT:Ie(√) Firefox(√)
STANDARD:XHTML 1.0 Strict / CSS2.0
核心样式：
html,body{
background:#000000;
height:100%;
font-size:12px;
font-family:Arial, Helvetica, sans-serif;
color:#333333;
margin:20px auto;
overflow:hidden;
text-align:center;}
/*菜单容器menu*/
div#menu{
width:100%;
height:34px;
padding:0px 0px 0px 5px;}
/*一级菜单*/
div#menu div{
width:125px;
height:20px;
float:left;
text-transform:capitalize;
background:#cccccc;
padding:5px 0px 0px 0px;
margin:4px 1px 0px 0px;}
/*二级菜单*/
div#menu div div{
width:125px;
height:20px;
border-bottom:1px #333333 solid;
background:#666666;
margin-top:-4px;
cursor:pointer;
display:none;}
/*二级菜单中特殊样式（可选）*/
div#menu div div.div1{
margin-top:3px;
border-top:1px #333333 solid;}
核心代码：
var menuItem=document.getElementById("menu").getElementsByTagName("div");
for(i=0;i menuItem[i].onmouseover=function(){
var subMenu=this.getElementsByTagName("div");
for(j=0;j subMenu[j].style.display="block";
subMenu[j].onmouseover=function(){this.style.background="#999999";this.style.color="#000000";};
subMenu[j].onmouseout=function(){this.style.background="#666666";this.style.color="#333333";};}
this.style.background="#666666"};
menuItem[i].onmouseout=function(){
var subMenu=this.getElementsByTagName("div");
for(j=0;j subMenu[j].style.display="none";}
this.style.background="#cccccc"};
}
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