function initEcAd() { 
document.all.AdLayer1.style.posTop = -200; 
document.all.AdLayer1.style.visibility = 'visible' 
document.all.AdLayer2.style.posTop = -200; 
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'
MoveLeftLayer('AdLayer1'); //左1
MoveRightLayer('AdLayer2'); //右1
MoveLeftLayer1('AdLayer3'); //左2
MoveRightLayer1('AdLayer4'); //右2
} 
//左1
function MoveLeftLayer(layerName) { 
var x = 5; 
var y = 400;// 左侧广告距离页首高度 
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("MoveLeftLayer('AdLayer1');", 20); 
}
//左2
function MoveLeftLayer1(layerName) { 
var x = 5; 
var y = 600;// 左侧广告距离页首高度 
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 = parseInt(y)"); 
eval("document.all." + layerName + ".style.posLeft = x"); 
setTimeout("MoveLeftLayer1('AdLayer3');", 20); 
}
//右1
function MoveRightLayer(layerName) { 
var x = 5; 
var y = 350;// 右侧广告距离页首高度 
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("MoveRightLayer('AdLayer2');", 20); 
} 
//右2
function MoveRightLayer1(layerName) { 
var x = 5; 
var y = 400;// 右侧广告距离页首高度 
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("MoveRightLayer1('AdLayer4');", 20); 
} 

function discontrol(itemid){

if(document.getElementById(itemid).style.display=='none'){
document.getElementById(itemid).style.display="";
}
else{
document.getElementById(itemid).style.display="none";
}
}

document.write("<div id=AdLayer1 style='position: absolute;visibility:hidden;z-index:1'><a href='http://www.jju.edu.cn/jyw/' target='_blank'><img src=IndexFloat/pop_jyw.gif width='80' border='0'></a><br><a onclick=discontrol('AdLayer1') style='cursor:pointer'><img src=IndexFloat/close.gif border='0' width='80'></a></div>" 
+"<div id=AdLayer2 style='position: absolute;visibility:hidden;z-index:1'></div>"+"<div id=AdLayer3 style='position: absolute;visibility:hidden;z-index:1'></div>"+"<div id=AdLayer4 style='position: absolute;visibility:hidden;z-index:1'><a href='new/details1.asp?n_id=25854' target='_blank'><img src=IndexFloat/zpjz.gif width='80' border='0'></a><br><a onclick=discontrol('AdLayer4') style='cursor:pointer'><img src=IndexFloat/close.gif border='0' width='80'></a></div>"); 
initEcAd()