Jquery轮播图

$(function () {
var current=0;
var count=$(".pics-list li").length-1;
var width=$(".pics-list li").width();

setInterval(function(){
next();
},1000)
function next () {
if(current>=count){
current=0;
}
else
{
current++;
}
$(".points-list li").eq(current).addClass("active").siblings().removeClass("active");
$(".pics-list").css("left",-1*width*current+"px")
}
function prev(){
if(current<=0){
current=count;
}
else
{
current--;
}
$(".points-list li").eq(current).addClass("active").siblings().removeClass("active");
$(".pics-list").css("left",-1*width*current+"px")
}
$(".banner-box .next").click(function () {
next();
})
$(".banner-box .prev").click(function () {
prev();
})

})