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';
MoveLefttopLayer('AdLayer1');
MoveRighttopLayer('AdLayer2');
}

function MoveLefttopLayer(layerName) {
var x = 20;
var y = 460;
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 = parseInt(y)");
eval("document.all." + layerName + ".style.posLeft = x");
setTimeout("MoveLefttopLayer('AdLayer1');", 20);
if (document.body.scrollTop>1000){
    return false;
    }
}

function MoveRighttopLayer(layerName) {
var x = 20;
var y = 460;
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("MoveRighttopLayer('AdLayer2');", 20);
if (document.body.scrollTop>1000){
    return false;
    }
} 
var left_top,left_down,right_top,right_down,div_name;
left_top="<div id=AdLayer1 style='position:absolute;visibility:hidden;z-index:1'>";
left_top=left_top+"<a href='http://www.netpolice.gov.cn' target='_blank'><img src=../images/adv/man_police.jpg border=0 ></a></div>";
right_top="<div id=AdLayer2 style='position:absolute;visibility:hidden;z-index:1'>";
right_top=right_top+"<a href='http://www.netpolice.gov.cn' target='_blank'><img src=../images/adv/women_police.jpg border=0 ></a></div>";
div_name=left_top+right_top
document.write(div_name)
initEcAd();