Object fixed at specific screen coordinates

Is it possibile to have an object fixed at a specified screen position despite the fact that image can scroll up and down? I mean, I have a vertical scroll arrangement that can scroll up and down but I want and object fixed, and not in an other layout but as an image around which the layout can scroll. I Hope It Is clear

Try this extension:

Thanks @TIMAI2 I'll try.

If you don't mind text, you could try a Progress Notifier, no extensions needed.