Syntax
document.anchors[num].y
The y property contains the y-coordinate of the anchor, in pixels, from the top edge of the document to the anchor.
<html>
<center><a name="B"><h4>B</h4></a></center>
AAA<hr>
<script language="JavaScript">
<!--
document.write("The y property is equal to ",document.anchors[0].y);
// ---End Hide-->
</script>
</html>