对联广告代码

function initEcAd() { 
	document.all.divLeft.style.posTop = -200; 
	document.all.divLeft.style.visibility = 'visible' 
	document.all.divRight.style.posTop = -200; 
	document.all.divRight.style.visibility = 'visible' 
	MoveLeftLayer('divLeft',50); 
	MoveRightLayer('divRight',50); 
} 
function MoveLeftLayer(layerName,y_obj) { 
	var x = 20; 
	var y = y_obj;// 左侧广告距离页首高度 
	var diff = (document.body.scrollTop + y - eval("document.all."+layerName+".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('"+layerName+"',"+y_obj+");", 20); 
} 
function MoveRightLayer(layerName,y_obj) { 
	var x = 20; 
	var y = y_obj;// 右侧广告距离页首高度 
	var diff = (document.body.scrollTop + y - eval("document.all."+layerName+".style.posTop"))*.40; 
	var y = document.body.scrollTop + y - diff; 
	eval("document.all." + layerName + ".style.posTop = parseInt(y)"); 
	eval("document.all." + layerName + ".style.posRight = x"); 
	setTimeout("MoveRightLayer('"+layerName+"',"+y_obj+");", 20); 
} 

var adLeftHtml ="<iframe style='WIDTH: 170px; HEIGHT: 300px' id='a' frameBorder='no' scrolling='no' src='http://www.mzwu.com/' align='top'></iframe>";
var adRightHtml = "<iframe style='WIDTH: 170px; HEIGHT: 300px' id='aa' frameBorder='no' scrolling='no' src='http://www.mzwu.com/' align='top'></iframe>";
var divLeft = "<div id='divLeft' style='position: absolute;visibility:hidden;z-index:1'>"+adLeftHtml+"</div>";
var divRight = "<div id='divRight' style='position: absolute;visibility:hidden;z-index:1'>"+adRightHtml+"</div>";
document.write(divLeft + divRight);

initEcAd()