Severity: 8192
Message: Creation of dynamic property Extensions::$session is deprecated
Filename: core/Loader.php
Line Number: 1286
Severity: 8192
Message: Creation of dynamic property Extensions::$Ext is deprecated
Filename: core/Loader.php
Line Number: 361
Severity: 8192
Message: Creation of dynamic property Extensions::$News is deprecated
Filename: core/Loader.php
Line Number: 361
Severity: 8192
Message: Creation of dynamic property Extensions::$Cats is deprecated
Filename: core/Loader.php
Line Number: 361
The purpose of this extension is to prevent multiple identical windows being opened should someone not see the first instance of the window show up. To demonstrate, click on the button and then, once the window is open, click on it again. You will get a JavaScript alert letting you know the window is already opened.
