HTML/CSS/CSS Attributes and Javascript Style Properties/pixelBottom
"pixelBottom" Example
<html>
<head>
<script language="JavaScript">
function function1(){
document.all.myDiv.style.pixelBottom = 500
}
</script>
</head>
<body>
<div id="myDiv"
style="background-color:#EEEEEE;
position:absolute;
width:200;
cursor:hand";
onclick="function1()">
Click this div element to send it to 500 px from the bottom.
</div>
</body>
</html>