//by zh 12:20 2010-11-30
//效果名称：两边浮动js对联广告
//使用方法 ，拖到页面即可,修改参数中的图片路径
//=====================================

IsShowClose = false;    //是否显示关闭按钮
leftImgSrc = "images/mytx.jpg";  //左边图片路径 
rightImgSrc = "images/zlzm.jpg"; //右边图片路径 

function initEcAd() {
    document.all.AdLayer1.style.posTop = -200;
    document.all.AdLayer1.style.visibility = 'visible'
    document.all.AdLayer2.style.posTop = -200;
    document.all.AdLayer2.style.visibility = 'visible'
    MoveLeftLayer('AdLayer1');
    MoveRightLayer('AdLayer2');
}


function MoveLeftLayer(layerName) {
  
    
   // var x = 1150;   //左广告  左边距,
    var y = 100;  //左广告 上边距
    var diff = (document.documentElement.scrollTop + y - document.all.AdLayer1.style.posTop) * .40;
    var y = document.documentElement.scrollTop + y - diff;
    eval("document.all." + layerName + ".style.posTop = parseInt(y)");
  
    if (screen.width > 1100) {
        var x = 50;
        eval("document.all." + layerName + ".style.posRight = x");  //宽屏
    }
    else {
        var x = 1150;
         eval("document.all." + layerName + ".style.posLeft = x"); //窄屏
    }
    setTimeout("MoveLeftLayer('AdLayer1');", 20);
}
function MoveRightLayer(layerName) {
    var x = 50;   //右广告 右边距
    var y = 100;  //右广告 上边距
    var diff = (document.documentElement.scrollTop + y - document.all.AdLayer2.style.posTop) * .40;
    var y = document.documentElement.scrollTop + y - diff;
    eval("document.all." + layerName + ".style.posTop = y");
    eval("document.all." + layerName + ".style.posLeft = x");
    setTimeout("MoveRightLayer('AdLayer2');", 20);
}

document.write("<div id=AdLayer1 style='position: absolute;visibility:hidden;z-index:2;background-color:#F4F4F4;'><img src=" + leftImgSrc + " border='0'></a>");
if (IsShowClose)
    document.write("<br/><a href=# onclick=\"AdLayer1.style.display='none';AdLayer2.style.display='none'\">关闭</a>");
document.write("</div>");

document.write("<div id=AdLayer2 style='position: absolute;visibility:hidden;z-index:2;background-color:#F4F4F4;'><img src=" + rightImgSrc + " border='0'></a>");
if (IsShowClose)
    document.write("<br><a href=# onclick=\"AdLayer1.style.display='none';AdLayer2.style.display='none'\">关闭</a>");
document.write("</div>");
initEcAd();

// JavaScript Document