类似QQ首页的无刷新换肤切换样式

<!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>换肤</title>
<style type="text/css">
body{font-size:12px}
*{margin:0;padding:0;}
ul,li{list-style:none}
.login_skin{height:25px;background:#E8E8E8;border:1px solid #e9e8e5;width:215px;color:#333;line-height:25px;margin:25px 0px 25px 10px;padding-left:15px;}
.login_skin li{float:left}
.login_skin .bor{border-right:1px solid #e9e8e5; padding-right:7px; margin-right:10px}
.login_skin li span{margin:7px 4px 0px 0px;cursor:pointer;display:block}
.login_skin li span em{display:block;height:9px;width:10px;overflow:hidden;text-indent:-9999px}
.login_skin a{color:#333;text-decoration:none; margin-right:5px}
.login_skin li .on{ border:1px solid #333;cursor:default}
h2{font-size:12px; padding:8px 0px 10px 15px}
#sk_blue{background:#2086b3;}
#sk_or{background:#e64c13}
#sk_byu{background:#b7a37a;}
#warpper{overflow:hidden;height:1%}
.contentl{margin-right:-244px;float:left;width:100%}
.contentr{width:230px;float:right;}
.main{margin-right:254px;margin-left:10px;height:300px}
.footer{height:30px;margin:30px 10px 0px 10px}
.blue .content{background:#2086b3;color:#fff;}
.blue .bb{border:2px solid #2086b3;}
.blue .bb h2{ color:#2086b3}
.blue .footer{background:#2086b3;}
.or .content{background:#e64c13}
.or .bb{border:2px solid #e64c13;}
.or .bb h2{ color:#e64c13}
.or .footer{background:#e64c13;}
.byu .content{background:#b7a37a;color:#f00}
.byu .bb{border:2px solid #b7a37a;}
.byu .bb h2{ color:#b7a37a}
.byu .footer{background:#b7a37a;}
</style>
<script type="text/javascript">
function setOnloadEvent(func){
var oldonload = window.onload;
if(typeof window.onload != "function"){
window.onload = func;
}
else{
window.onload = function(){
oldonload();
func();
}
}
}
// --- 设置cookie
function setCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}
//--- 获取cookie
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function skin(){
if(!document.getElementsByTagName) return false;
if(!document.getElementById("skin")) return false;
var skin_id="blue";
if(getCookie("id")!=null){
skin_id=getCookie("id");
}
var span_id=skin_id+"_sp";
var span_on=document.getElementById(span_id);
document.body.className=skin_id;
span_on.className="on";
var skinType=document.getElementById("skin");
var skin_nub=skinType.getElementsByTagName("em");
for(var i=0; i<skin_nub.length;i++){
skin_nub[i].onclick=function(){
var em_id=this.getAttribute("id");
var skin_id=em_id.split("_")[1];
var spanList=document.getElementsByTagName("span");
for(var j=0;j<spanList.length;j++){
spanList[j].className="";
if(spanList[j].getAttribute("id").indexOf(skin_id)!=-1)
{
spanList[j].className="on";
}
}
document.body.className=skin_id;
setCookie("id",skin_id,1);
}
}
}
setOnloadEvent(skin);
</script>
</head>
<body>
<div id="header">
<div class="login_skin" id="skin">
<ul>
<li><a href="http://down.admin5.com/">登陆</a></li>
<li class="bor"><a href="http://down.admin5.com/">注册</a></li>
<li>选择页面风格：</li>
<li><span id="blue_sp"><em id="sk_blue">ee</em></span></li>
<li><span id="or_sp"><em id="sk_or">ere</em></span></li>
<li><span id="byu_sp"><em id="sk_byu">ere</em></span></li>
</ul>
</div>
</div>
<div id="warpper">
<div class="contentl" >
<div class="main bb"><h2>换肤测试</h2></div>
</div>
<div class="contentr bb" ><h2>换肤测试</h2></div>
</div>
<div class="footer"></div>
</body>
</html>

提示:可以修改后运行.

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