I have this annoying little problem on my laptop that sometimes after I have used a external monitor (with higher resolution) some applications place them self outside the visible area of my desktop.

So the question is how do I move them back into the visible area? (Please note, no part of the window is visible so I can't use the mouse.)

Is there some app that can give me focus to move a application to the mouse pointer or something like that?

Please note that I'm running Xubuntu (XFCE) on this laptop.

Thanks