用js实现博客打赏功能
<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Strict//EN' 'http://www.w3.org/TR/html4/strict.dtd'><html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
<title>在此插入标题</title>
<link rel="stylesheet" type="text/css" href="swap.css"/>
<script type="text/javascript">
<!--
function swap（val）{
if（val=="left"）{
left.style.display='block';//设置为显示
center.style.display='none';//设置为隐藏
right.style.display='none';
}else if（val=="center"）{
left.style.display='none';
center.style.display='block';
right.style.display='none';
}else if（val=="right"）{
left.style.display='none';
center.style.display='none';
right.style.display='block';
}
}
-->
</script>
</head>
<body>
<div class="main">
<div class="top">
<div class="left" id="left"><img src="images/left.jpg"/></div>
<div class="center" id="center"><img src="images/center.jpg"/></div>
<div class="right" id="right"><img src="images/right.jpg"/></div>
</div>
<div class="bottom">
<ul>
<li onmouseover="swap（'left'）"></li>
<li onmouseover="swap（'center'）"></li>
<li onmouseover="swap（'right'www.9ask.cn/shangqiu/）"></li>
</ul>
</div>
</div>
</body>
</html>
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