function initEcAd() {
document.all.AdLayer2.style.posTop = -200;
document.all.AdLayer2.style.visibility = 'visible'
MoveRightLayer('AdLayer2');
}
function MoveRightLayer(layerName) {
var x = 2;
var y = 250;// 右侧广告距离页首高度
var diff = (document.body.scrollTop + y - document.all.AdLayer2.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posRight = x");
setTimeout("MoveRightLayer('AdLayer2');", 20);
}

document.write("<div id=AdLayer2 style='position: absolute;visibility:hidden;z-index:1'><a href='http://wpa.qq.com/msgrd?V=1&Uin=138582278&Site=www.zhongboedu.com&Menu=yes' target='_blank'><img src=images/QQ.gif border='0'></a></div>");
initEcAd()