在线qq客服根据在线离线状态显示不一样自定义图片

<div id="box-kefu">
    <div class="kefu-close"></div>
    <div class="kefu-open">
        <div>
        <ul>
            <li><a href="http://wpa.qq.com/msgrd?v=3&uin=645481746&site=qq&menu=yes" target="_blank"><i class="qq"></i>在线客服1</a></li>
            <li><a href="http://wpa.qq.com/msgrd?v=3&uin=1712816412&site=qq&menu=yes" target="_blank"><i class="qq"></i>在线客服2</a></li>
            <li><a href="http://wpa.qq.com/msgrd?v=3&uin=645481746&site=qq&menu=yes" target="_blank"><i class="qq"></i>在线客服3</a></li>
            <li><a href="http://www.97zzw.com/plus/guestbook.php#liuyan" target="_blank"><i class="txt"></i>咨询留言</a></li>
        </ul>
        </div>
        <a href="javascript:;" class="close">关闭</a>
    </div>
</div>
<script>var online= new Array();</script>
<script src="http://webpresence.qq.com/getonline?Type=1&645481746:1712816412:645481746:"></script>
<script>
(function($){
    for (var i=0; i<online.length; i++) {
        if (online[i]) jQuery("#box-kefu .qq").eq(i).addClass("online");
    }
    var _open = $("#box-kefu").find(".kefu-open"),
        _close = $("#box-kefu").find(".kefu-close");
    _open.find("a").hover(function(){
        $(this).stop(true,true).animate({paddingLeft:20},200).find("i").stop(true,true).animate({left:75},200);
    },function(){
        $(this).stop(true,true).animate({paddingLeft:35},200).find("i").stop(true,true).animate({left:10},200);
    });
    

    _open.find(".close").click(function(){
        _open.animate({width:148},200,function(){
            _open.animate({width:0},200,function(){
                _close.animate({width:34},200);

            });
        });
    });
    _close.click(function(){
        _close.animate({width:44},200,function(){
            _close.animate({width:0},200,function(){
                _open.animate({width:138},200);
            });
        });
    });
})(jQuery)
</script>

@charset "utf-8";

#box-kefu { position: fixed; right: 0; top: 20%; z-index: 100; _position: absolute; _top: expression(eval(document.documentElement.scrollTop+100)); }
#box-kefu .kefu-open { position: absolute; top: 0; right: 0; width: 138px; padding: 46px 0 0 0; background: url(../images/kefu_icon.png) no-repeat -46px 0; _background-image: url(../images/kefu_icon.gif); overflow: hidden; }
#box-kefu .kefu-open .close{ display: block; position: absolute; width: 22px; height: 22px; right: 0; top: 0; text-indent: -9999px; }
#box-kefu .kefu-open div { padding-bottom: 5px; background: url(../images/kefu_bg.png) no-repeat -268px bottom; width: 134px; }
#box-kefu .kefu-open ul { background: url(../images/kefu_bg.png) repeat-y 0 0 #939393; }
#box-kefu .kefu-open li { height: 32px; line-height: 32px; padding: 0 15px 2px; background: url(../images/kefu_bg.png) no-repeat -134px bottom; }
#box-kefu .kefu-open li a { color: #fff; display: block; position: relative; zoom: 1; padding-left: 35px; }
#box-kefu .kefu-open li a:hover { text-decoration: none; }
#box-kefu .kefu-open li a i { display: inline-block; position: absolute; left: 10px; top: 6px; width: 21px; height: 21px; background: url(../images/kefu_icon.png) no-repeat 9999px 9999px; _background-image: url(../images/kefu_icon.gif); }
#box-kefu .kefu-open li a i.qq { background-position: -86px -56px; }
#box-kefu .kefu-open li a i.online { background-position: -56px -56px; }
#box-kefu .kefu-open li a i.txt { background-position: -56px -86px; }
#box-kefu .kefu-close { position: absolute; top: 5px; right: 0; width: 0; height: 127px; padding: 0; background: url(../images/kefu_icon.png) no-repeat 0 0; _background-image: url(../images/kefu_icon.gif); cursor: pointer; overflow: hidden; }