<!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>{title}_懒人图库</title>
<meta name="keywords" content="jquery特效,jquery焦点图,jquery图片轮换,jquery相册效果,焦点图实例,淘宝焦点图代码下载,{keyword},JS广告代码,JS特效代码" />
<meta name="description" content="此代码内容为{title}，属于站长常用代码，更多{keyword}代码请访问懒人图库JS代码频道。" />
<style type="text/css">
* {margin:0; padding:0;}
body {font-size:12px; color:#222; font-family:Verdana,Arial,Helvetica,sans-serif; background:#f0f0f0;}
.clearfix:after {content: "."; display: block; height: 0; clear: both; visibility: hidden;}
.clearfix {zoom:1;}
ul,li {list-style:none;}
img {border:0;}
.wrapper {width:600px; margin:0 auto; padding-bottom:50px;}
.ad {width:468px; margin:10px auto 0;}
.ad li {padding-top:5px;}
h1 {height:50px; line-height:50px; font-size:22px; font-weight:normal; font-family:"Microsoft YaHei",SimHei;}
.shuoming {margin-top:20px; border:1px solid #ccc; padding-bottom:10px;}
.shuoming dt {height:30px; line-height:30px; font-weight:bold; text-indent:10px;}
.shuoming dd {line-height:20px; padding:5px 20px;}
.wrapper {width:780px;}
/* tmall focus */
#focus {width:780px; height:380px; overflow:hidden; position:relative;}
#focus ul {height:380px; position:absolute;}
#focus ul li {float:left; width:780px; height:380px; overflow:hidden; position:relative; background:#000;}
#focus ul li div {position:absolute; overflow:hidden;}
#focus .btnBg {position:absolute; width:780px; height:40px; left:0; bottom:0; background:#000;}
#focus .btn {position:absolute; width:770px; height:24px; left:0; bottom:8px; padding-left:10px;}
#focus .btn span {display:inline-block; _display:inline; _zoom:1; width:24px; height:24px; line-height:24px; text-align:center; font-size:20px; font-family:"Microsoft YaHei",SimHei; margin-right:10px; cursor:pointer; color:#fff;}
#focus .btn span.on {background:#000; color:#fcc;}
</style>
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
var sWidth = $("#focus").width(); //获取焦点图的宽度（显示面积）
var len = $("#focus ul li").length; //获取焦点图个数
var index = 0;
var picTimer;
//以下代码添加数字按钮和按钮后的半透明长条
var btn = "<div class='btnBg'></div><div class='btn'>";
for(var i=0; i < len; i++) {
btn += "<span>" + (i+1) + "</span>";
}
btn += "</div>"
$("#focus").append(btn);
$("#focus .btnBg").css("opacity",0.5);
//为数字按钮添加鼠标滑入事件，以显示相应的内容
$("#focus .btn span").mouseenter(function() {
index = $("#focus .btn span").index(this);
showPics(index);
}).eq(0).trigger("mouseenter");
//本例为左右滚动，即所有li元素都是在同一排向左浮动，所以这里需要计算出外围ul元素的宽度
$("#focus ul").css("width",sWidth * (len + 1));
//鼠标滑入某li中的某div里，调整其同辈div元素的透明度，由于li的背景为黑色，所以会有变暗的效果
$("#focus ul li div").hover(function() {
$(this).siblings().css("opacity",0.7);
},function() {
$("#focus ul li div").css("opacity",1);
});
//鼠标滑上焦点图时停止自动播放，滑出时开始自动播放
$("#focus").hover(function() {
clearInterval(picTimer);
},function() {
picTimer = setInterval(function() {
if(index == len) { //如果索引值等于li元素个数，说明最后一张图播放完毕，接下来要显示第一张图，即调用showFirPic()，然后将索引值清零