我按照教程做了一个 T 恤，但我无法让它工作，它加载了加载 gif 并隐藏了其他图像，但是这个 .show 函数没有做任何事情，我错过了什么吗？
<style type="text/css">
.slider{
width:800px;
height:350px;
overflow:hidden;
margin:30px auto;
background-image:url(img/load.gif);
background-repeat:no-repeat;
background-position:center;
}
.shadow{
background-image:url(img/shadow.png);
background-repeat:no-repeat;
background-position:top;
width:864px;
height:144px;
margin:-60px auto;
}
.slider img{
width:800px;
height:350px;
display:none;
}
</style>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery-ui/1.8.22/jquery-ui.min.js"></script>
<script type="text/javascript">
function Slider(){
$(".slider #1").show("fade",500);
}
</script>
</head>
<body onload="Slider();">
<div class="slider">
<img id="1" src="img/image1.jpg" border="0" alt="Image 1"/>
<img id="2" src="img/image2.jpg" border="0" alt="Image 2"/>
<img id="3" src="img/image3.jpg" border="0" alt="Image 3"/>
</div>
<div class="shadow">
</div>
</body>