qq在线状态判断

<script>var online = new Array();
    </script>
    <script src="http://webpresence.
     
    </script>
 
    <script>
    if (online[0]==0)
    {
     alert(1);
     document.write('<img  src="http:// border="0" align="absmiddle" alt="My status"/>');
     
     }else{
     alert(2);
      document.write('<img src="http:// border="0" align="absmiddle"/>');
     
    }
   </script>
这段代码为什么老是显示的是qq在线的啊