<script>  
function   show(username)  
{
document.all.userinfo.innerHTML='信息读取中...';
document.all.userinfo.style.display="block";   
document.all.userinfo.style.left=event.x;  
document.all.userinfo.style.top=document.body.scrollTop+event.y;  
//xajax_getlyuserinfo(username);     //异步处理,生成卡片
}  
</script>

<div   id="userinfo"   style="position:absolute;z-index:100;left:15px;top:180px;display:none;border:1px   solid   #dddddd;background-color:#eeeeee;width:250px;height:102" onmouseout='document.all.userinfo.style.display="none"' onmouseover='document.all.userinfo.style.display="block"'></div>