var m_layer1,m_layer2;
function initMove() {
 m_layer1=document.getElementById("AdLayer1");
 m_layer2=document.getElementById("AdLayer2");
 m_layer1.style.top = "-200px";
 m_layer1.style.visibility = 'visible'
 m_layer2.style.top = "-200px";
 m_layer2.style.visibility = 'visible'
 MoveLayers();
 window.onscroll=MoveLayers;
}
function MoveLayers() {
 var x = 5; // 左右边距
 var y = 230; // 顶距
 var st=document.documentElement.scrollTop;
 var cw=document.documentElement.clientWidth; 
 var y = st + y;
 m_layer1.style.top = y+"px";
 m_layer1.style.left = (cw-924)/2+"px";
 m_layer2.style.top = y+"px";
 m_layer2.style.left = cw-m_layer2.clientWidth-(cw-924)/2+"px";
}
window.setTimeout("initMove()",600);