document.writeln("<div id='phpcms_adlayer40_1' style='position:absolute;visibility:hidden;'>");
document.write("<a href='http://www.zm-china.cn/ads/clickads.php?id=40' target='_blank'><img src='http://www.zm-china.cn/uploadfile/201008/20100812014900579.gif' border='0' width='100' height='230' alt=''></a>");
document.writeln("</div>");

document.writeln("<div id='phpcms_adlayer40_2' style='position:absolute;visibility:hidden;'>");
document.write("<a href='http://www.zm-china.cn/ads/clickads.php?id=40' target='_blank'><img src='http://www.zm-china.cn/uploadfile/201008/20100812014900579.gif' border='0' width='100' height='230' alt=''></a>");
document.writeln("</div>");

document.all.phpcms_adlayer40_1.style.posTop = 100;
document.all.phpcms_adlayer40_2.style.posTop = 100;

MoveLayer('phpcms_adlayer40_1',20);

var x2 = document.body.clientWidth-document.all.phpcms_adlayer40_2.offsetWidth-20;
MoveLayer('phpcms_adlayer40_2',x2);

function MoveLayer(layerName,x) {
var y = document.body.clientWidth/5;

var diff = (document.body.scrollTop + y - document.all.phpcms_adlayer40_1.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("MoveLayer('"+layerName+"',"+x+");", 15); 
}

document.all.phpcms_adlayer40_1.style.visibility = 'visible';
document.all.phpcms_adlayer40_2.style.visibility = 'visible';