| <!doctype html> | |
| <meta charset="utf-8"> | |
| <title>Grandchild that posts a message to the window.top</title> | |
| <script> | |
| var top_location = ''; | |
| var result = ''; | |
| try { | |
| top_location = window.top.location.href; | |
| result = 'allowed'; | |
| } catch (err) { | |
| result = 'noaccess'; | |
| } | |
| window.top.postMessage(result, '*'); | |
| </script> |