<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Accordion</title>
<style>
#accordion{
width:200px;
}
#accordion ul{
list-style: none;
display:none;
}
.first-level{
background-color: #d8d8d8;
background-color: rgba(236, 208, 208, 0.53);
border-radius: 4px;
display: block;
cursor: pointer;
position: relative;
margin: 2px 0 0 0;
padding: 8px;
min-height: 0;
}
</style>
</head>
<body>
<div id="accordion">
<div>
<h3 class="first-level">level one</h3>
<ul>
<li>first item</li>
<li>second item</li>
<li>third item</li>
</ul>
</div>
<div>
<h3 class="first-level">level one</h3>
<ul>
<li>first item</li>
<li>second item</li>
<li>third item</li>
</ul>
</div>
<div>
<h3 class="first-level">level one</h3>
<ul>
<li>first item</li>
<li>second item</li>
<li>third item</li>
</ul>
</div>
</div>
<script src="common.js"></script>
<script>
var heads = document.querySelectorAll(".first-level");
function headClick(event){
var target = EventUtil.getTarget(event);
toggleDisplay(target.parentNode.querySelector("ul"));
}
for(var i=0;i<heads.length;i++){
EventUtil.addHandler(heads[i], "click", headClick);
}
window.onunload = function (){
for(var i=0;i<heads.length;i++){
EventUtil.removeHandler(heads[i], "click", headClick);
}
heads = null;
}
