(function ($) {
//调用方式 $('#silder').imgSilderBig({s_width:564, s_height:293, is_showTit:true, s_times:3000,css_link:'css/style.css'}); 容器必须加入 id silder_list or class silder_list
/*参考结构
<div class="silder" id="silder">
<ul class="silder_list" id="silder_list">
<li style="background:url(img/xx.png);" href="http://www.baidu.com"></li>
</ul>
</div>
*/
$.fn.silderDefaults = { //默认参数
s_width:500, //容器宽度
s_height:500, //容器高度
is_showTit:true, // 是否显示图片标题 false :不显示，true :显示
s_times:3000, //设置滚动时间
on:'click',
css_link:'css/style.css', //留空则不传
pageClick:['pagePrev','pageNext'],//#pagePrev 上一页，#pagePrev 下一页 传ID
lfPage:true //判断是否显示左右翻页 false 不显示，true显示
};
$.extendSilderBig = function (obj,opt) { //obj 元素对象，opt 参数对象
var g = { //公共方法， 外部可调用
//初始化
init: function () {
s_widths = 0,wh={};
pagesize=0; //页码
silderList = $('#silder_list',g.obj);
silderList_li = $('#silder_list li',g.obj);
if(opt.css_link != ''){ // 判断传值不为空则添加样式
g.LoadCSS(opt.css_link); //样式文件导入
}
img_size = silderList_li.size() ;//图片个数

var currHtml = ""; //加入播放页码 及文字描述
if(opt.is_showTit){ //判断是否显示标题
currHtml += "<div class='silder_desc' id='silder_desc'></div>";
}

currHtml += "<ul class='silder_page' id='silder_page'>";//分页码代码注入
for(var i=0; i < img_size; i++){
currHtml += "<li>"+ parseInt((1 + i),10) +"</li>";
}
currHtml +="</ul>";

g.css_resize();
$(window).resize(function(){g.css_resize();});

g.obj.append(currHtml);//注入分页码
var silderPage = $('#silder_page',g.obj);
var silderPage_li =$('#silder_page li',g.obj);
silderPage.css({left:($(g.obj).width() - silderPage.width()) /2 +"px"});
silderPage_li.eq(0).addClass('current');

if(opt.is_showTit){ //初始化图片描述
$('#silder_desc',g.obj).text(silderList_li.eq(0).find('img').attr('alt'));
}
silderPage_li.on(opt.on,function(){
pagesize = $(this).index();
silderList.stop(true,true).animate({marginLeft:- silderList_li.width() * pagesize},300);
$(this).addClass('current').siblings().removeClass('current');
if(opt.is_showTit){
$('#silder_desc',g.obj).text(silderList_li.eq(pagesize).find('img').attr('alt'));
}
});
var t;
silderList.hover(function(){window.clearInterval(t); return;},function(){ t = window.setInterval(function(){
if(pagesize < img_size && pagesize >= 0)
{
silderList.stop(true,true).animate({marginLeft:- silderList_li.width() * pagesize},300);
silderPage_li.eq(pagesize).addClass('current').siblings().removeClass('current');
if(opt.is_showTit){
$('#silder_desc',g.obj).text(silderList_li.eq(pagesize).find('img').attr('alt'));
}
pagesize++;
if(pagesize >= img_size){
pagesize = 0;
}
}
},opt.s_times);}).trigger("mouseout"); //悬浮时 停止自动动画,trigger 起默认触发作用

if(opt.lfPage){//判断是否显示左右分页
g.obj.append("<a href='javascript:void(0);' id="+ opt.pageClick[0] +"></a><a href='javascript:void(0);' id="+ opt.pageClick[1] +"></a>")
$("#" +opt.pageClick[0]+",#"+ opt.pageClick[1] +"").on('click',function(){
if(pagesize < img_size && pagesize >=0){
if($(this).attr('id') == opt.pageClick[0]){//上一页
pagesize--;
}
if($(this).attr('id') == opt.pageClick[1]){//下一页
pagesize++;
}
if(pagesize >= img_size){
pagesize = 0;
}else if(pagesize < 0){
pagesize = img_size - 1;
}
silderList.stop(true,true).animate({marginLeft:- silderList_li.width() * pagesize},300);
silderPage_li.eq(pagesize).addClass('current').siblings().removeClass('current');
if(opt.is_showTit){
$('#silder_desc',g.obj).text(silderList_li.eq(pagesize).find('img').attr('alt'));
}
}
window.clearInterval(t); return;
}).trigger("mouseout");

}
},
LoadCSS:function(url){ //新建css
var s = document.createElement("LINK");
s.rel = "stylesheet";
s.type = "text/css";
s.href = url;
document.getElementsByTagName("HEAD")[0].appendChild(s);
},
css_resize:function(){
if(navigator.userAgent.indexOf("iPad") > 0 && $(window).width() < 1200){
s_widths = 1200;
}else{
s_widths = opt.s_width == "100%" ? $(window).width() : opt.s_width;
}
wh ={width:s_widths,height:opt.s_height};
g.obj.css(wh); silderList.css({width:s_widths * img_size,height:opt.s_height}); //设置宽高属性
silderList_li.css({float:"left",width:s_widths,height:opt.s_height}); //初始化隐藏其他图片
silderList.stop(true,true).css({marginLeft:- silderList_li.width() * pagesize});
}
};

g.obj = $(obj);
g.init();
return this;
}
$.fn.imgSilderBig = function (options) {
if (this.length == 0) return; //判断对象是否存在
this.each(function () {
if (this.usedSilder) return;
var opt = $.extend({}, $.fn.silderDefaults, options); //合并已赋值参数
this.usedSilder = $.extendSilderBig(this, opt);
});
}
})(jQuery);