CSS布局：根据浏览器宽度自动把布局从三栏切换成两栏加底栏

来源：互联网发布：明道软件优缺点编辑：程序博客网时间：2024/05/21 02:54

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS布局：根据浏览器宽度自动把布局从三栏切换成两栏加底栏</title>
<STYLE type="text/css">
*{ margin:0; padding:0}
body{ text-align:center}
#wrapper{
margin-left:auto;
margin-right:auto;
text-align:left;
}
#header,#footer{
clear:both;
text-align:center;
}
h1,p{padding:10px;}
#main{
float:left;
width:720px;
}
#content{
float:right;
width:480px;
height:360px;
color:#333;
background-color:#efefef;
}
#extrabar{
float:left;
width:240px;
height:360px;
color:#fff;
background-color:#6666CC;
}
.box{
float:left;
width:240px;
height:120px;
}
#sidebar{ float:left;}
.minwidth{
width:720px;
}
.maxwidth{
width:960px;
}
.minwidth #sidebar{
width:720px;
}
.maxwidth #sidebar{
width:240px;
}
.s1{
color:#fff;
background-color:#6600CC;
}
.s2{
color:#fff;
background-color:#6666CC;
}
.s3{
color:#fff;
background-color:#6633CC;
}
</STYLE>
<SCRIPT type="text/javascript">
//from http://www.collylogic.com/?/comments/redesign-notes-1-width-based-layout/
wraphandler = {
init: function() {
if (!document.getElementById) return;
// set up the appropriate wrapper
wraphandler.setWrapper();
// and make sure it gets set up again if you resize the window
wraphandler.addEvent(window,"resize",wraphandler.setWrapper);
},

setWrapper: function() {
// width stuff from ppk's http://www.evolt.org/article/document_body_doctype_switching_and_more/17/30655/index.html
var theWidth = 0;
if (window.innerWidth) {
theWidth = window.innerWidth
} else if (document.documentElement &&
document.documentElement.clientWidth) {
theWidth = document.documentElement.clientWidth
} else if (document.body) {
theWidth = document.body.clientWidth
}
if (theWidth != 0) {
if (theWidth < 1000) {
document.getElementById('wrapper').className = 'minwidth';

} else {
document.getElementById('wrapper').className = 'maxwidth';

}
}
},

addEvent: function( obj, type, fn ) {
if ( obj.attachEvent ) {
obj['e'+type+fn] = fn;
obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
obj.attachEvent( 'on'+type, obj[type+fn] );
} else {
obj.addEventListener( type, fn, false );
}
}
}
wraphandler.addEvent(window,"load",wraphandler.init);
</SCRIPT>
</head>

<body>

<DIV id="wrapper" class="minwidth">
<DIV id="header">
<H1>根据浏览器宽度自动把布局从三栏切换成两栏加底栏</H1></DIV>
<DIV id="main">
<DIV id="content">
<P>因为要把主内容放这里又想先显示..所以.多套了个div</P>
<P>因为偷懒..选了几个刚刚好的宽度.高度也写死了..只是让大家能看到切换的效果..</P>
<P>米美化..用色块显示..奇丑无比.</P>
<P>相关资料：<A title="关于脚本使用的相关说明." href="http://www.collylogic.com/?/comments/redesign-notes-1-width-based-layout/">关于脚本使用的相关说明(英文)</A></P></DIV>
<DIV id="extrabar">
<P>这里是ID为extrabar的层...</P></DIV></DIV>
<DIV id="sidebar">
<DIV class="box s1">
<P>在ID为sidebar的层里的一个小栏1</P></DIV>
<DIV class="box s2">
<P>在ID为sidebar的层里的一个小栏2</P></DIV>
<DIV class="box s3">
<P>在ID为sidebar的层里的一个小栏3</P></DIV></DIV>
<DIV id="footer">
<P>Copyright <A href="http://www.aoao.org.cn/" rel="me">aoao</A> , <A href="http://www.creativecommons.cn/licenses/by-nc/2.5/">Some
Rights Reserved</A> .</P></DIV></DIV>
<p>查找更多代码，请访问：<a href="http://www.lanrentuku.com/" target="_blank">懒人图库</a></p>

</body>
</html>