HTML/CSS/CSS Attributes and Javascript Style Properties/pixelTop
"pixelTop" Example
<source lang="html4strict">
<html> <head> <script language="JavaScript">
function function1(){ document.all.myDiv.style.pixelTop = 500; }
</script> </head> <body>
Click this div element to send it to 500 px from the top.
</body> </html>
</source>