<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(function(){
$("input#fade100").click(function(){
$("p:not(:animated)").fadeTo("slow",1);
});
$("input#fade50").click(function(){
$("p:not(:animated)").fadeTo("slow",0.5);
});
$("input#fade0").click(function(){
$("p:not(:animated)").fadeTo("slow",0);
});
});
</script>
<style>
p{
width:200px;
height:200px;
background-color:#FF0000;
display:none;
}
</style>
</head>
<body>
<dl>
<input id="fade100" type="button" value="表示" />
<input id="fade50" type="button" value="半透明" />
<input id="fade0" type="button" value="非表示" />
<p></p>
</dl>
</body>
</html>