How to judge whether the customer service QQ number is online or offline

<script src="JS/jquery-1.5."></script> 
 
<style> 
#divMenu {position:fixed;top:220px;right:0px;_position:absolute; _top: cursor:pointer; display:none} 
#rightad {position:fixed;top:190px;right:7px;width:95px;height:180px;_position:absolute; font-size:12px;} 
#scrollto {position:fixed;bottom:100px; width:30px;right:0px;background:#368bcc;color:#FFF;cursor:pointer; text-align:center;_position:absolute;  display:none} 
.kfli {height:30px; line-height:30px; color:#FFF; text-align:center;cursor:pointer; border-bottom:1px solid #fff} 
#leftad span,#rightad span{cursor:pointer;} 
</style> 
 
<div ><img src="/onlinekf/" class="press" alt="online consultation"></div>
<div > 
<span style="color:#0f8ed2">Close</span>
<div style="height:351px; background:url(/onlinekf/) #368bcc; background-position:center top; background-repeat:no-repeat;width:91px"> 
<div style="height:90px; width:91px"> 
<div style="width:91px; height:91px; cursor:pointer"></div> 
 
<div class="kfli" onclick="openQQ('111111')"><img src="/onlinekf/" border="0" /> Customer Service 1</div>
<div class="kfli" onclick="openQQ('222222')"><img src="/onlinekf/" border="0" /> Customer Service 2</div>
<div class="kfli" onclick="openQQ('333333')"><img src="/onlinekf/" border="0" /> Customer Service 3</div>
<div class="kfli" onclick="openQQ('444444')"><img src="/onlinekf/" border="0" /> Market One</div>
<div class="kfli" onclick="openQQ('555555')"><img src="/onlinekf/" border="0" /> Market 2</div>
<div class="kfli" onclick="openQQ('666666')"><img src="/onlinekf/" border="0" /> Market Three</div>
<div class="kfli" onclick="openQQ('777777')"><img src="/onlinekf/" border="0" /> Market 4</div>
<div class="kfli" onclick="openQQ('888888')"><img src="/onlinekf/" border="0" /> Market Five</div>
</div> 
</div> 
 
</div> 
<script> 
    var online = new Array(); 
</script> 
<script type= "text/javascript" src="/getonline?Type=1&1844565410:363576965:2193744200:1315797152:1609979008:2690151979:3130711794:2825956442:" ></script> 
<script type="text/javascript"> 
    for (var i = 0; i < ; i++) { 
        if (online[i] == 0) { 
            $(".kfli img").eq(i).attr("src","/onlinekf/"); 
        } else { 
            $(".kfli img").eq(i).attr("src",'/onlinekf/'); 
        } 
    } 
    
//Close Float
    $(document).ready(function () { 
        $("#rightad span").click(function () { 
            $("#rightad").hide(300); 
            $("#divMenu").show(300); 
        }); 
 
        $("#divMenu").click(function () { 
            $("#rightad").slideDown(300); 
            $("#divMenu").hide(200); 
        }); 
 
        /* 
        $("#rightad").mouseleave(function(){ 
        $("#rightad").hide(200); 
        $("#divMenu").show(300); 
        }); 
        */ 
    }); 
 
    = function () { 
        if ( + > 100) { 
            ("scrollto"). = "block"; 
        } 
        else { 
            ("scrollto"). = "none"; 
        } 
    } 
    function OpenSmallWindows(strURL, scrollbar, width, height, left, top) { 
        (strURL, "_blank", 
     "status=no,resizable=0,toolbar=no,menubar=no,scrollbars=" + scrollbar + ",width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + ""); 
    } 
    function openQQ(qq) { 
        = "tencent://message/?uin=" + qq + "&Site=&Menu=yes"; 
    } 
</script>