QQ_LastScrollY=0;
function QQ_HeartBeat()
{     
    var QQ_DiffY;
    var QQ_Bool=1;    
    if(document.documentElement && document.documentElement.scrollTop)
    {
        QQ_DiffY = document.documentElement.scrollTop;
    }
    else if(document.body)
    {
        QQ_DiffY = document.body.scrollTop;
    }
    else
    {
        QQ_Bool=0;
    }     
    if(QQ_Bool==1)
    {
        var QQ_Percent=(QQ_DiffY-QQ_LastScrollY)*1; 
        if(QQ_Percent > 0)
        {
            QQ_Percent=Math.ceil(QQ_Percent);
        }
        else
        {
            QQ_Percent=Math.floor(QQ_Percent);
        }        
        var Obj_SideBox=document.getElementById("QQ_SideBox");
        Obj_SideBox.style.top=parseInt(Obj_SideBox.style.top) + QQ_Percent + "px";
        QQ_LastScrollY = QQ_LastScrollY + QQ_Percent;         
        if(document.body.clientWidth < 1160)
        {
            Obj_SideBox.style.display="none";
        }
        else
        {
            Obj_SideBox.style.display="block";
        }
    }
}
QQ_Code="<div id=\"QQ_SideBox\" style=\"right:5px;position:absolute;top:150px;\"><a href=\"tencent://message/?uin=123456&Site=在线客服&Menu=yes\" target=\"_blank\"><img border=\"0\" src=\"/Assist/QQ/1_1.gif\"></a></div>";
document.write(QQ_Code); 
window.setInterval(QQ_HeartBeat,100);