var showad = true;        //是否显示广告
var Toppx = 20;            //上端位置
var AdDivW = 110;
var PageWidth = 960;    //页面多少宽度象素下正好不出现左右滚动条
var MinScreenW = 1024;    //显示广告的最小屏幕宽度象素

function scall(){
    if(!showad){return;}
    if (window.screen.width<MinScreenW){
        alert("临时提示：\n\n显示器分辨率宽度小于"+MinScreenW+",不显示广告");
        showad = false;
        document.getElementById("Javascript.LeftDiv").style.display="none";
        document.getElementById("Javascript.RightDiv").style.display="none";
        return;
    }
    var Borderpx = ((window.screen.width-PageWidth)/2-AdDivW)/2;

    document.getElementById("Javascript.LeftDiv").style.display="";
    document.getElementById("Javascript.LeftDiv").style.top=(document.documentElement.scrollTop+Toppx)+"px";
    document.getElementById("Javascript.LeftDiv").style.left=(document.documentElement.scrollLeft+Borderpx)+"px";
    document.getElementById("Javascript.RightDiv").style.display="";
    document.getElementById("Javascript.RightDiv").style.top=(document.documentElement.scrollTop+Toppx)+"px";
    document.getElementById("Javascript.RightDiv").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.RightDiv").offsetWidth-Borderpx)+"px";
}

function hidead()
{
    showad = false;
    document.getElementById("Javascript.LeftDiv").style.display="none";
    document.getElementById("Javascript.RightDiv").style.display="none";
}
window.onscroll=scall;
window.onresize=scall;
window.onload=function(){       
        initScroll("scrlContainer", "scrlContent");
	scall();
}