jquery实现的下拉和收缩代码实例

<!DOCTYPE html>  
<html>  
<head>  
<meta charset=" utf-8">  
<meta name="author" content="http://www.softwhy.com/" />
<head>
<title>蚂蚁部落</title>
<style type="text/css">
body{
  margin:0 auto;
  padding:0;
  width:570px;
  font:75%/120% Arial, Helvetica, sans-serif;
}
a:focus{
  outline:none;
}
#panel{
  background:#69C7F7;
  height:200px;
  display:none;
}
.slide{
  margin:0;
  padding:0;
  border-top:solid 4px #F27613;
}
.btn-slide{
  background:#F27613 url(mytest/jQuery/20121225165932118.gif) no-repeat right -50px;
  text-align:center;
  width:144px;
  height:31px;
  padding:10px 10px 0 0;
  margin:0 auto;
  display:block;
  font:bold 120%/100% Arial, Helvetica, sans-serif;
  color:#fff;
  text-decoration:none;
}
.active{
  background-position:right 12px;
}
</style>
<script type="text/javascript" src="http://www.softwhy.com/mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">  
$(document).ready(function(){  
  $(".btn-slide").click(function(){  
    $("#panel").slideToggle("slow");  
    $(this).toggleClass("active");  
    return false;  
  })
})
</script>
</head>
<body>
<div style="display: block;" id="panel"></div>
<p class="slide">
  <a href="javascript:;" class="btn-slide active">点击查看效果</a>
</p>
</body>
</html>

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