<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=717819 --> <head> <title>Test for Bug 717819</title> <script type="application/javascript" src="/MochiKit/packed.js"></script> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=717819">Mozilla Bug 717819</a> <p id="display"></p> <div id="content"> <table style="position: relative; top: 100px;"> <tr> <td> <div id="test" style="position: absolute; top: 50px;"></div> </td> </tr> </table> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 717819 **/ var div = document.getElementById("test"); is(div.offsetTop, 50, "The offsetTop must be calculated correctly"); is(div.offsetParent, document.querySelector("table"), "The offset should be calculated off of the correct parent"); </script> </pre> </body> </html>