fast/block/positioning/offsetLeft-offsetTop-borders.html

<html>
<body style='margin:8px'>
<div>
<div style="position: absolute; width: 150px; height: 150px; border: 5px solid green;">
<div style="position: relative; width: 50px; height: 50px; border:13px solid blue; padding:12px;margin:10px">
<div id='x' style="border:2px solid red">
jee
</div>
</div>
</div>
<script>
if (window.testRunner)
  testRunner.dumpAsText();

var el = document.getElementById('x');
while (el) {
document.write('<br>-------------------------------------------------offsetLeft:'+el.offsetLeft);
el = el.offsetParent;
}
el = document.getElementById('x');
while (el) {
document.write('<br>-------------------------------------------------offsetTop:'+el.offsetTop);
el = el.offsetParent;
}
</script>
</body>
</html>