function showkf()
{
    var dv=document.createElement("div");
    dv.innerHTML="<a href='tencent://message/?uin=327989804'><img style='border-width:0px;' src='images/kf.jpg' /></a>"
    dv.style.position="absolute";
    dv.style.top="100px";
    dv.style.left="10px";
    document.body.appendChild(dv);
    window.onscroll=function(){
        dv.style.top=(document.documentElement.scrollTop+100)+'px';
    }
    //处理论坛主题
    var as=document.getElementById("bbsput").getElementsByTagName("a");
    for(var i=0,j=as.length;i<j;i++)
    {
        if(as[i].href.indexOf('http')!=-1)
        {
            as[i].href=as[i].href.replace(location.host,"www.tt919.com");
        }
        else
        {
            as[i].href="http://www.tt919.com/"+as[i].href;
        }
    }
}

window.onload=showkf;