A simple module providing three hotkeys and one setting to modify their behaviour:
If Focus Before Close is false (the default state), the given hotkey will toggle the window open/closed, regardless of current focus (assuming your key presses aren't getting eaten by the search input element.)
If it is true, and the window in question is not the ui.activeWindow, it will be brought to fore instead of closed.
Default: Alt + Z
Default: Alt + X
Default: Alt + Shift + Z