跳动的下拉菜单

来源：互联网发布：淘宝充话费开店编辑：程序博客网时间：2024/04/25 05:07

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>模仿as效果的导航菜单</title>
<style type="text/css">
<!--
a:link,a:visited    { text-decoration: none; color: #666666 }
a:hover            { text-decoration: underline }
#hor1 {
    position:absolute;
    left:320px;
    top:20px;
    width:220px;
    height:20px;
    z-index:1;
    background-color: #999900;
}
#hor2 {
    position:absolute;
    left:320px;
    top:40px;
    width:220px;
    height:20px;
    z-index:2;
    background-color: #FFCC00;
}
#hor3 {
    position:absolute;
    left:320px;
    top:60px;
    width:220px;
    height:20px;
    z-index:3;
    background-color: #99CC00;
}
#board1 {
    position:absolute;
    left:320px;
    top:40px;
    width:220px;
    height:120px;
    z-index:-100;
    background-color: #333333;
    visibility: hidden;
}
body,td,th {
    font-family: Verdana, Arial, Helvetica, sans-serif;
    font-size: 12px;
    color: #FFFFFF;
    font-weight: bold;
}
body {
    background-color: #666666;
}
#board2 {
    position:absolute;
    left:320px;
    top:60px;
    width:220px;
    height:120px;
    z-index:-90;
    background-color: #333333;
    visibility: hidden;
}
#board3 {
    position:absolute;
    width:220px;
    height:120px;
    z-index:-80;
    left: 320px;
    top: 80px;
    background-color: #333333;
    visibility: hidden;
}
#hor4 {
    position:absolute;
    left:320px;
    top:80px;
    width:220px;
    height:20px;
    z-index:4;
    background-color: #99CCCC;
}
#board4 {
    position:absolute;
    left:320px;
    top:100px;
    width:220px;
    height:120px;
    z-index:-70;
    background-color: #333333;
    visibility: hidden;
}

-->
</style>
<script type="text/javascript">
lastNo=0
function re(menu_no){
if(lastNo!=menu_no){
cur=menu_no+1
lastNo=menu_no
rest()
}else{
cur=100
}
document.getElementById("board"+menu_no).style.visibility="visible"
}
function rest(){
for(i=1;i<=4;i++){
document.getElementById("hor"+i).style.top=20*i;
document.getElementById("board"+i).style.visibility="hidden"
}
menu_num=4;
act=1
height=120+20
speed=0;
posY=0;
}
function huke(){
if(act==1&&cur<100){
speed=(height-posY)*0.69+speed*0.6
posY+=speed
for(i=cur;i<=menu_num;i++){
document.getElementById("hor"+i).style.top=posY+(i-2)*20
}
if(Math.abs(height-posY)<0.5){
for(i=cur;i<=menu_num;i++){
document.getElementById("hor"+i).style.top=height+(i-2)*20
}
act=0
}
setTimeout("huke()",50)
}
}

</script>
</head>
<body>
<div id="hor1" onclick="re(1);huke()">News</div>
<div id="hor2" onclick="re(2);huke()">Populor</div>
<div id="hor3" onclick="re(3);huke()">Sports</div>
<div id="hor4" onclick="re(4);huke()">Woman</div>
<div id="board1">1.由AS而想起Javascript<br />2.用Jscript写ASP有没有先天性的不足？<br />3.没有了。</div>
<div id="board2">1.xhtml+css真的来了吗？<br />2.Flash取代传统网站<br />3.Flash何时才能连接数据库？</div>
<div id="board3">1.程序员与小姐的10个相同。<br />2.中国的程序员与中国的足球？</div>
<div id="board4">1.二十一世纪最缺的是什么?人才<br />
<a href="http://www.gamvan.com" target="_blank">http://www.gamvan.com</a>
<a href="http://www.gamvan.com" target="_blank">http://www.gamvan.com</a></div>
</body>
</html>