分享自己一个比较常用的全屏banner切换代码，请自行替换其中的图片和链接地址即可。
HTML部分：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery全屏banner自动轮播切换 - 任刚个人主页 www.rengang.com.cn</title>
<script type="text/javascript" src="js/jquery.js"/></script>
<script type="text/javascript">
function banner(){
var bn_id = 0;
var bn_id2= 1;
var speed33=5000;
var qhjg = 1;
var MyMar33;
$("#banner .d1").hide();
$("#banner .d1").eq(0).fadeIn("slow");
if($("#banner .d1").length>1)
{
$("#banner_id li").eq(0).addClass("nuw");
function Marquee33(){
bn_id2 = bn_id+1;
if(bn_id2>$("#banner .d1").length-1)
{
bn_id2 = 0;
}
$("#banner .d1").eq(bn_id).css("z-index","2");
$("#banner .d1").eq(bn_id2).css("z-index","1");
$("#banner .d1").eq(bn_id2).show();
$("#banner .d1").eq(bn_id).fadeOut("slow");
$("#banner_id li").removeClass("nuw");
$("#banner_id li").eq(bn_id2).addClass("nuw");
bn_id=bn_id2;
};
MyMar33=setInterval(Marquee33,speed33);
$("#banner_id li").click(function(){
var bn_id3 = $("#banner_id li").index(this);
if(bn_id3!=bn_id&&qhjg==1)
{
qhjg = 0;
$("#banner .d1").eq(bn_id).css("z-index","2");
$("#banner .d1").eq(bn_id3).css("z-index","1");
$("#banner .d1").eq(bn_id3).show();
$("#banner .d1").eq(bn_id).fadeOut("slow",function(){qhjg = 1;});
$("#banner_id li").removeClass("nuw");
$("#banner_id li").eq(bn_id3).addClass("nuw");
bn_id=bn_id3;
}
})
$("#banner_id").hover(
function(){
clearInterval(MyMar33);
}
,
function(){
MyMar33=setInterval(Marquee33,speed33);
}
)
}
else
{
$("#banner_id").hide();
}
}
</script>
</head>
<body>
<div class="banner" id="banner" >
<a href="https://www.rengang.com.cn/" class="d1" style="background:url(https://www.rengang.com.cn/wp-content/themes/RG/images/slide1.jpg) center no-repeat;"></a>
<a href="https://www.rengang.com.cn/" class="d1" style="background:url(https://www.rengang.com.cn/wp-content/themes/RG/images/slide2.jpg) center no-repeat;"></a>
<a href="https://www.rengang.com.cn/" class="d1" style="background:url(https://www.rengang.com.cn/wp-content/themes/RG/images/slide3.jpg) center no-repeat;"></a>
<a href="https://www.rengang.com.cn/" class="d1" style="background:url(https://www.rengang.com.cn/wp-content/themes/RG/images/slide4.jpg) center no-repeat;"></a>
<a href="https://www.rengang.com.cn/" class="d1" style="background:url(https://www.rengang.com.cn/wp-content/themes/RG/images/slide5.jpg) center no-repeat;"></a>
<div class="d2" id="banner_id">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</div>
<script type="text/javascript">banner()</script>
</body>
</html>
CSS部分
*{margin:0;padding:0;list-style-type:none;}
a,img{border:0;}
body{font:12px/180% Arial, Helvetica, sans-serif;}
.banner{height:400px;overflow:hidden;}
.banner .d1{width:100%;height:392px;display:block;position:absolute;left:0px;top:0px;}
.banner .d2{width:100%;height:30px;clear:both;position:absolute;z-index:100;left:0px;top:360px;}
.banner .d2 ul{float:left;position:absolute;left:50%;top:0;margin:0 0 0 -96px;display:inline;}
.banner .d2 li{width:17px;height:15px;overflow:hidden;cursor:pointer;background:url(images/img1.png) no-repeat center;float:left;margin:0 3px;display:inline;}
.banner .d2 li.nuw{background:url(images/img1_1.png) no-repeat center;}
效果演示请看热任刚个人主页www.rengang.com.cn顶部banner！
" />
