focus-follow-mouse

A desirable and useful behaviour under Linux GUIs is to get the focus of a window in which the mouse pointer is over. In Gnome, this behaviour is not enable by default, in fact, it isn't even configurable with the default administration/configuration tools. Two steps are then required to enable this feature

1. Install the "control-center-extra" package. As root, execute "yum install control-center-extra"
2. When the package is successfully installed, go to "System -> Preferences -> Window" and select the item "Select windows when the mouse moves over them"

References: Fedora forum