var showad = true;
var Toppx = 160; //上端位置 
var AdDivW = 100; //宽度 
var AdDivH = 325; //高度 
var PageWidth = 800; //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 

var ClosebuttonHtml = '<div align="right" style="position: absolute;top:0px;right:0px;margin:2px;padding:2px;z-index:2000;"><a href="javascript:;" onclick="hidead()" style="color:red;text-decoration:none;font-size:12px;">关闭</a></div>'
var AdContentHtml = '<div align="center" style="color:green;font-size:23pt;font-family:黑体;"><a href="http://www.longrui.net/"><img src="../../../../Content/Images/guanggao.gif" border="0"/></a></div>';
document.write('<div id="Javascript.LeftDiv" style="position: absolute;border: 1px solid #336699;background-color:#EEEEE2;z-index:1000;width:' + AdDivW + 'px;height:' + AdDivH + 'px;top:-1000px;word-break:break-all;display:none;">' + ClosebuttonHtml + '<div>' + AdContentHtml + '</div></div>');
document.write('<div id="Javascript.RightDiv" style="position: absolute;border: 1px solid #336699;background-color:#EEEEE2;z-index:1000;width:' + AdDivW + 'px;height:' + AdDivH + 'px;top:-1000px;word-break:break-all;display:none;">' + ClosebuttonHtml + '<div>' + AdContentHtml + '</div></div>');
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) / 3 - AdDivW) / 3;

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

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 = scall;