hi guys,
i'm from germany and my english is bad 
i have created a first Test of a new Toast/Notify Component.
Now it's a quick and dirty Test, but it works 
This 'tool' is running with Ext.ux.MessageWindow extension.
I think a little bit of teamwork an it could be a nice Adobe Air Extension.
Here is the Example:
Air Application: NotificationTest.air
Project files: NotificationTest.rar
This code have a few of bugs/problems, there i hope to solve by teamwork.
- the transparent window must be resize dynamically
- the listener to close the transparent window and disconnect the connection threw both windows must be extend to NotificationManager (if more than one message are shown)
Here a Screenshot:

Feedback, tips and solutions are welcome 
Edit #1: add in main.html after win.show(); the following line to set AlwaysOnFront.
Code:
win.getNative().alwaysInFront = true;
so long,
oVi