效果：http://hovertree.com/texiao/jqimg/2/
效果图：
下载：http://hovertree.com/h/bjaf/jdaqepet.htm
HTML代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery实现点击小图弹出大图 - 何问起 </title><base target="_blank"/>
<link href="http://hovertree.com/texiao/jqimg/2/css/style.css" rel="stylesheet" type="text/css" />
<style>
body {
margin: 0;
padding: 0; }
body img {
width: 300px;
height: 200px;
}#hovertreephoto a{color:cadetblue}
</style>
</head>
<body>
<div style="width:960px; margin:0 auto" id="hovertreephoto">
<h1>jQuery点击弹出大图，可以放大为原图，可以放大缩写和关闭。</h1>
<a href="http://hovertree.com/h/bjaf/i3ptrtqm.htm">原文</a> <a href="http://hovertree.com/">首页</a> <a href="http://hovertree.com/texiao/">特效库</a><br />
<img class="test" src="http://hovertree.com/texiao/jqimg/2/photo/1.jpg" alt="">
<img class="test" src="http://hovertree.com/texiao/jqimg/2/photo/2.jpg" alt="">
<img class="test" src="http://hovertree.com/texiao/jqimg/2/photo/3.jpg" alt="">
</div>
<script type="text/javascript" src="http://down.hovertree.com/jquery/jquery-1.12.3.min.js"></script>
<script type="text/javascript" src="http://hovertree.com/texiao/jqimg/2/js/jquey-bigic.js"></script>
<script type="text/javascript">
$(function(){
$('#hovertreephoto img').bigic();
});
</script>
</body>
</html>
转自：http://hovertree.com/h/bjaf/i3ptrtqm.htm