SO fiddle
Test Fiddle mainly for SO Questions
by Nick Craver
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<p>Test 1</p>
<p>Test 2</p>
<p>Test 3</p>
<p>Test 4</p>
<p>Test 5</p>
JavaScript
var offset = $("p:eq(4)").offset();
alert('Top: ' + offset.top + ', Left: ' + offset.left);