效果體驗：http://hovertree.com/texiao/jquery/44/
代碼如下：
<!DOCTYPE html>
<html>
<head>
<title>拖動驗證jquery插件 - 何問起</title><base target="_blank" />
<meta charset="utf-8" />
<link href="http://hovertree.com/texiao/jquery/44/drag.css" rel="stylesheet" type="text/css" />
<script src="http://hovertree.com/ziyuan/jquery/jquery-1.12.1.min.js" type="text/javascript"></script>
<script src="http://hovertree.com/texiao/jquery/44/drag.js" type="text/javascript"></script>
</head>
<body>
<div id="drag"></div>
<div style="text-align:center;margin-top:100px;"><a href="http://hovertree.com/h/bjaf/4b0prpjw.htm">代碼</a> <a href="http://hovertree.com">首頁</a> <a href="http://hovertree.com/texiao/">特效</a></div>
<script type="text/javascript">
$('#drag').drag();
</script>
</body>
</html>