| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <script> | |
| window.onload = function() { | |
| try { | |
| top.location = "data:text/html,\u003c!DOCTYPE html\u003e\u003cscript\u003eopener.postMessage('can navigate', '*');\u003c/script\u003e"; | |
| } catch(e) { | |
| top.postMessage("cannot navigate", "*"); | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |