function initEcAd() {
document.all.AdLayer1.style.posTop = -100;
document.all.AdLayer1.style.visibility = 'visible'
document.all.AdLayer2.style.posTop = -100;
document.all.AdLayer2.style.visibility = 'visible'
document.all.AdLayer3.style.posTop = -200;
document.all.AdLayer3.style.visibility = 'visible'
document.all.AdLayer4.style.posTop = -200;
document.all.AdLayer4.style.visibility = 'visible'

MoveLeftLayer1('AdLayer1');
MoveRightLayer1('AdLayer2');
MoveLeftLayer('AdLayer3');
MoveRightLayer('AdLayer4');

}
function MoveLeftLayer1(layerName) {
var x = 5;
var y = 450;
var diff = (document.body.scrollTop + y - document.all.AdLayer1.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("MoveLeftLayer1('AdLayer1');", 20);
}
function MoveRightLayer1(layerName) {
var x = 5;
var y = 450;
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("MoveRightLayer1('AdLayer2');", 20);
}

function MoveLeftLayer(layerName) {
var x = 5;
var y = 120 ;
var diff = (document.body.scrollTop + y - document.all.AdLayer3.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('AdLayer3');", 20);
}
function MoveRightLayer(layerName) {
var x = 5;
var y = 120;
var diff = (document.body.scrollTop + y - document.all.AdLayer4.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('AdLayer4');", 20);
}

document.write("<div id=AdLayer1 style='position: absolute;visibility:hidden;z-index:1'><a href=http://www.scichi.com/kjxg60/index.html target=_blank ><img src=http://www.scichi.com/ad0805/kj60.jpg border=0></a></div>"
			   
			  +"<div id=AdLayer2 style='position: absolute;visibility:hidden;z-index:1'><a href=http://www.scichi.com/new/read/ads.asp target=_blank ><img src= http://www.scichi.com/ad0805/3.jpg border=0></a></div>");

document.write("<div id=AdLayer3 style='position: absolute;visibility:hidden;z-index:1'><a href=http://www.scichi.com/20100121/index.html target=_blank ><img src=http://www.scichi.com/ad0805/111.jpg border=0></a></div>"
			   
			   +"<div id=AdLayer4 style='position: absolute;visibility:hidden;z-index:1'><a href=http://www.scichi.com/niandu/2009/type.asp?typeid=23 target=_blank ><img src=http://www.scichi.com/ad0805/09ndrwpx.jpg border=0></a></div>");

initEcAd()