| <!doctype html> | |
| <html> | |
| <head><title>Document</title></head> | |
| <body> | |
| <h1>Document</h1> | |
| <script> | |
| onload = function() { | |
| document.addEventListener("visibilitychange", onVisibilityChange, false); | |
| opener.postMessage("close", "*"); | |
| } | |
| function onVisibilityChange() { | |
| opener.postMessage(document.visibilityState, "*"); | |
| } | |
| </script> | |
| </body> | |
| </html> |