<div style="position: absolute; top: 100px; left: 100px; width: 37px; height: 20px; z-index: 2; id="Lay2">
.
.
.
<div>
<div style="position: absolute; top: 100px; left: 100px; width: 37px; height: 20px; z-index: 1; id="Lay1">
<div>
.
.
.
<div>
<div style="position: absolute; top: 100px; left: 100px; width: 37px; height: 20px; z-index: 1; id="Lay1">
<div>
document.getElementById("Lay1").innerHTML = "...";
}
<HEAD>
<Script language="javascript">
window.onload=function(){
document.getElementById('lay1').innerHTML=document.body.innerHTML
}
</Script>
</HEAD>
<body>...
test
test
test<br>
-------------------------------------------<br>
</body>
<div id=lay1></div>
</HTML>