(function($){ $.fn.jjsImgs=function(options){  var defaults={   bWidth:770,//大图宽   sWidth:130,//小图宽   qknavCurr:'on',//当前缩略图样式   qknavLen:6,//设置小缩略图展示个数   auto:1,   //设为1则为自动播放   time:3000,//自动播放可设置时间间隔   disabPrev:'noprev',   disabNext:'nonext',   callback:null  };  var options=$.extend(defaults,options);  this.each(function(){   var self=$(this),    bigImg=self.find(".bigImg"),    quicknav=self.find(".quicknav"),    prevBtn=self.find(".prev"),    nextBtn=self.find(".next");   var timer,num=0,flag,lis=bigImg.find("ul").children('li'),len=lis.length;   var _init=function(){    for(var i=0;i
               
                
                 
");    }    quicknav.find("ul").children("li").eq(0).addClass(options.qknavCurr);    quicknav.find("li").each(function(){     $(this).click(function(){       num=$(this).index();       _nowPic(num,true);      });    });    nextBtn.click(function(){     _next();    });    prevBtn.click(function(){     _prev();    });   },   _nowPic=function(num,flag){    var lb=num*options.bWidth;    var ls=num*options.sWidth;    var lnum=Math.abs(quicknav.find("ul").css("left").split('p')[0]/options.sWidth);       quicknav.find("li").eq(num).addClass(options.qknavCurr).siblings().removeClass(options.qknavCurr);    bigImg.find("ul").animate({'left':'-'+lb+'px'});    _btnValid(num);    if(!flag) return;    if(num==lnum){     ls=num<3?0:(num-3)*options.sWidth;    }else if(num==(lnum+options.qknavLen-1)){     ls=(len-num)<3?(len-options.qknavLen)*options.sWidth:(lnum+3)*options.sWidth;    }else if(num
                
                 len-1){     num=len-1;     return;    }    _nowPic(num,true);   },   _prev=function(){    num--;    if(num<0){     num=0;     return;    }    _nowPic(num,true);   },   _btnValid=function(num){    if(num==0){     prevBtn.addClass(options.disabPrev);     nextBtn.removeClass(options.disabNext);    }else if(num==len-1){     nextBtn.addClass(options.disabNext);     prevBtn.removeClass(options.disabPrev);    }else{     prevBtn.removeClass(options.disabPrev);     nextBtn.removeClass(options.disabNext);    }   },   _autoPlay=function(){    timer=setInterval(function(){     if(num==len-1){num=-1;}     _next();    },options.time);   };   self.bind('mouseover',function(){clearInterval(timer);});   self.bind('mouseout',function(){if(!!options.auto){_autoPlay();}});   _init();   if(!!options.auto){_autoPlay();}     }); }})(jQuery);$(".imgWrap").jjsImgs();