function initEcAd() {
document.all.AdLayer11.style.posTop = -1200;
document.all.AdLayer11.style.visibility = 'visible'
document.all.AdLayer22.style.posTop = -200;
document.all.AdLayer22.style.visibility = 'hidden'
MoveLeftLayer('AdLayer11');
MoveRightLayer('AdLayer22');
}
function MoveLeftLayer(layerName) {
var x = 6;
var y = 95;
var diff = (document.body.scrollTop + y - document.all.AdLayer11.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posLeft = x");
setTimeout("MoveLeftLayer('AdLayer11');", 20);
}
function MoveRightLayer(layerName) {
var x = 5;
var y = 100;
var diff = (document.body.scrollTop + y - document.all.AdLayer22.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('AdLayer22');", 20);
}
document.write("<div id=AdLayer11 style='position: absolute;visibility:hidden;z-index:1'><a href='/course_all.htm' target='_self'><img src='http://www.bpstudio.net/imgs/ad.jpg' quality=high  WIDTH=125 HEIGHT=179 border=0 ></a></div>"
	+"<div id=AdLayer22 style='position: absolute;visibility:hidden;z-index:1'><img src='http://www.bpstudio.net/imgs/ad_pic.gif'   WIDTH=110 HEIGHT=220 ></div>");
initEcAd()