; i++){
$bannerList.eq(i).css("zIndex",bannerLength-i);
focusBubble.append("");
}
focusBubble.find("li").eq(0).addClass("current");
var bubbleLength=focusBubble.find("li").length;
focusBubble.css({
"width":bubbleLength*22,
"marginLeft":-bubbleLength*11
});//初始化
focusBubble.on("click","li",function(){
$(this).addClass("current").siblings().removeClass("current");
_index=$(this).index();
changeImg(_index);
});//点击轮换
nextBnt.on("click",function(){
_index++
if(_index>bannerLength-1){
_index=0;
}
changeImg(_index);
});//下一张
prevBnt.on("click",function(){
_index--
if(_index<0){
_index=bannerLength-1;
}
changeImg(_index);
});//上一张
function changeImg(_index){
$bannerList.eq(_index).fadeIn(250);
$bannerList.eq(_index).siblings().fadeOut(200);
focusBubble.find("li").removeClass("current");
focusBubble.find("li").eq(_index).addClass("current");
clearInterval(_timer);
_timer=setInterval(function(){nextBnt.on('click')},5000);
}//切换主函数
_timer=setInterval(function(){nextBnt.on('click')},5000);
}();
})