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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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$(function(){
$('.tree li:has(ul)').addClass('parent_li').find(' > span').attr('title', 'Collapse this branch');
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<div class="tree well">
<ul>
<li>
<span><i class="icon-minus-sign"></i> Parent2</span> <a style="display:none" href="#">Test</a>
<ul>
<li>
<span style=""><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
<li>
<span><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
</ul>
</li>
<li>
<span><i class="icon-minus-sign"></i> Parent2</span> <a style="display:none" href="#">Test</a>
<ul>
<li>
<span><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
</ul>
</li>
<li>
<span><i class="icon-globe"></i> Parent2</span>
</li>
</ul>
</div>
</body>
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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<!--图标样式-->
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css" />
<!--主要样式-->
<link rel="stylesheet" type="text/css" href="css/style.css" />
<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function(){
$('.tree li:has(ul)').addClass('parent_li').find(' > span').attr('title', 'Collapse this branch');
$('.tree li.parent_li > span').live('click', function (e) {
var children = $(this).parent('li.parent_li').find(' > ul > li');
if (children.is(":visible")) {
children.hide('fast');
$(this).attr('title', 'Expand this branch').find(' > i').addClass('icon-plus-sign').removeClass('icon-minus-sign');
} else {
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$(this).attr('title', 'Collapse this branch').find(' > i').addClass('icon-minus-sign').removeClass('icon-plus-sign');
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e.stopPropagation();
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});
</script>
</head>
<body>
<div class="tree well">
<ul>
<li>
<span><i class="icon-minus-sign"></i> Parent2</span> <a style="display:none" href="#">Test</a>
<ul>
<li>
<span style=""><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
<li>
<span><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
</ul>
</li>
<li>
<span><i class="icon-minus-sign"></i> Parent2</span> <a style="display:none" href="#">Test</a>
<ul>
<li>
<span><i class="icon-globe"></i> Child</span> <a style="display:none" href="#">Test</a>
</li>
</ul>
</li>
<li>
<span><i class="icon-globe"></i> Parent2</span>
</li>
</ul>
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