层叠式导航菜单

下为效果显示区

脚本说明:
第一步：把如下代码加入<body><center><script language=javascript src="../js/shang.js"></script>
区域中
<script language="JavaScript1.2">
//菜单1的内容
var menu1=new Array()
menu1[0]='<a href=http://www.163.net/>网易</a><br>'
menu1[1]='<a href=http://www.sina.com.cn/>新浪网</a><br>'
menu1[2]='<a href=http://www.cctv.com/>中央电视台</a><br>'
//菜单2的内容
var menu2=new Array()
menu2[0]='<a href=http://vs_server.njavat.net/bbs>本站论坛</a><br>'
menu2[1]='<a href=http://vs_server.njcatv.net/aspchitchat>本站聊天室</a><br>'
menu2[2]='<a href=mailto:baron_40njcatv.net>来信联络</a><br>'
</script>

第二步：把<body><center><script language=javascript src="../js/shang.js"></script>
区域改为
<script language="JavaScript1.2">
//以下不要改
var zindex=100
function dropit2(whichone){
if (window.themenu&&themenu.id!=whichone.id)
themenu.style.visibility="hidden"
themenu=whichone
if (document.all){
themenu.style.left=document.body.scrollLeft+event.clientX-event.offsetX
themenu.style.top=document.body.scrollTop+event.clientY-event.offsetY+18
if (themenu.style.visibility=="hidden"){
themenu.style.visibility="visible"
themenu.style.zIndex=zindex++
}
else{
hidemenu()
}
}
}

function dropit(e,whichone){
if (window.themenu&&themenu.id!=eval(whichone).id)
themenu.visibility="hide"
themenu=eval(whichone)
if (themenu.visibility=="hide")
themenu.visibility="show"
else
themenu.visibility="hide"
themenu.zIndex++
themenu.left=e.pageX-e.layerX
themenu.top=e.pageY-e.layerY+19
return false
}

function hidemenu(whichone){
if (window.themenu)
themenu.style.visibility="hidden"
}

function hidemenu2(){
themenu.visibility="hide"
}

if (document.all)
document.body.onclick=hidemenu

//以上不要改
</script>

<div id=dropmenu0 style="position:absolute;left:0;top:0;layer-background-color:#CDECF5;background-color:#CDECF5;width:80;visibility:hidden;border:1px solid black;padding:0px">
<script language="JavaScript1.2">
if (document.all)
dropmenu0.style.padding="4px"
for (i=0;i<menu1.length;i++)
document.write(menu1[i])
</script>
</div>
<script language="JavaScript1.2">
if (document.layers){
document.dropmenu0.captureEvents(Event.CLICK)
document.dropmenu0.onclick=hidemenu2
}
</script>

<div id=dropmenu1 style="position:absolute;left:0;top:0;layer-background-color:#CDECF5;background-color:#CDECF5;width:80;visibility:hidden;border:1px solid black;padding:0px">
<script language="JavaScript1.2">
if (document.all)
dropmenu1.style.padding="4px"
for (i=0;i<menu2.length;i++)
document.write(menu2[i])
</script>
</div>
<script language="JavaScript1.2">
if (document.layers){
document.dropmenu1.captureEvents(Event.CLICK)
document.dropmenu1.onclick=hidemenu2
}
</script>

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