<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>下拉菜单</title>
<style>
.cardbottom {
BACKGROUND-COLOR: #99ccff; BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px
solid; BORDER-RIGHT: black 1px solid; BORDER-TOP: black 0px solid; FILTER: Alpha(Opacity=80)
}
</style>
<script language="javascript" type="text/javascript">
function aa(){
if(document.getElementById("Layer2").style.display == "none"){
document.getElementById("Layer2").style.display ="list-item";
document.getElementById("Layer1").innerText="关闭";
return;
}
if(document.getElementById("Layer2").style.display == "list-item"){
document.getElementById("Layer2").style.display="none";
document.getElementById("Layer1").innerText="打开";
return;
}
}
function bb(){
if(document.getElementById("Layer4").style.display == "none"){
document.getElementById("Layer4").style.display ="list-item";
document.getElementById("Layer3").innerText="关闭";
return;
}
if(document.getElementById("Layer4").style.display == "list-item"){
document.getElementById("Layer4").style.display="none";
document.getElementById("Layer3").innerText="打开";
return;
}
}
</script>
</head>
<body>
<div id="Layer1" class="cardbottom" style="width:100px; "onClick="aa()">打开</div>
<div id="Layer2" class="cardbottom" style="width:100px; " style="display:none;" >
选项一<br>
选项二<br>
选项三
</div>
<div id="Layer3" class="cardbottom" style="width:100px; " onClick="bb()">打开</div>
<div id="Layer4" class="cardbottom" style="width:100px; "style="display:none ">
选项一<br>
选项二<br>
选项三
</div>
</body>
</html> | 
