图片居中的css
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>div里面图片垂直居中的几个例子</title>
<style type="text/css">
<!--
body {
margin:0;padding:0
}
div {
width:500px;
height:500px;
line-height:500px;
border:1px solid #666;
overflow:hidden;
position:relative;
text-align:center;
}
div p {
position:static;
+position:absolute;
top:50%
}
img {
position:static;
+position:relative;
top:-50%;left:-50%;
vertical-align:middle
}
p:after {
content:".";font-size:1px;
visibility:hidden
}
-->
</style>
</head>
<body>
<div><p><img src="http://www.google.com/intl/en/images/logo.gif" /></p></div>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>div里面图片垂直居中的几个例子</title>
<style type="text/css">
<!--
* {margin:0;padding:0;}
div {
width:500px;border:1px solid #666;
height:500px;
background:url("http://www.google.com/intl/en/images/logo.gif") center no-repeat
}
-->
</style>
</head>
<body>
<div></div>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>未命名頁面</title>
<script type="text/javascript">
function setCenter(Xelement)
{
var parent=Xelement.parentNode;
parent.style.position="relative";
Xelement.style.position="absolute";
var left=(parent.clientWidth-Xelement.clientWidth)/2;
var top=(parent.clientHeight-Xelement.clientHeight)/2;
Xelement.style.left=left+"px";
Xelement.style.top=top+"px";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div id="picbox" style="width: 200px; height: 200px; background: #ccc;">
<img id="img1" src="images/c7.jpg" alt="图片正中的css" onload="setCenter(this)" />
</div>
</form>
</body>
</html>
