jquery 手写广告轮换效果

//广告轮换效果
var index = 1;
var speed = 4000;
var autoMove = null;
Move_Interval();
function Move_Interval()
{
    autoMove = setInterval(function(){
        index++;
        if (index > 4)
        {
            index = 1;
        }
        Move();
    }, speed);
}
function Move()
{
    $("#img_banner").attr("src","/img_index/v3.0banner"+index+".jpg").hide().fadeIn();
    for(var j=1;j<5;j++){
        var text = $("#li_banner"+j).children("a").text()+$("#li_banner"+j).children("span").text();
        if(index==j)
            $("#li_banner"+j).html("<span class='on'>"+text+"</span>");
        else
            $("#li_banner"+j).html("<a href='javascript:void(0)'>"+text+"</a>");
    }
}

//鼠标放上，放下效果
$("[id^=li_banner]").each(function(i,n){
    $(this).hover(function(){
        index=i+1;
        Move();
        window.clearInterval(autoMove);
    },function(){
        Move_Interval();
    });
});

<ul>
                <li id="li_banner1"><span class="on">百货谷招商热潮！</span></li>
                <li style="background: url(img_index/v3.0bannerxian.jpg) no-repeat center center;
                     2px; height: 32px; padding: 0 3px;"></li>
                <li id="li_banner2"><a href="javascript:void(0)">《赢在中国》36强</a></li>
                <li style="background: url(img_index/v3.0bannerxian.jpg) no-repeat center center;
                     2px; height: 32px; padding: 0 3px;"></li>
                <li id="li_banner3"><a href="javascript:void(0)">独享财富梦想</a></li>
                <li style="background: url(img_index/v3.0bannerxian.jpg) no-repeat center center;
                     2px; height: 32px; padding: 0 3px;"></li>
                <li id="li_banner4"><a href="javascript:void(0)">《购物指南》免费送</a></li>
            </ul>