Alt Tab

function OnEvent(event, arg)
    if (event == "MOUSE_BUTTON_PRESSED" and arg == 4) then
        PressKey("lalt")
        Sleep(10)
        repeat
            PressAndReleaseKey("tab")
            ReturnCode = SleepMouseButtonBreak(320, 4)
        until not IsMouseButtonPressed(4) or ReturnCode == _MOUSE_BUTTON_BREAK
        ReleaseKey("lalt")
    end
end

_TIME_BREAK = 0
_MOUSE_BUTTON_BREAK = 1
function SleepMouseButtonBreak(time, mb)
    StartTime = GetRunningTime()
    while (GetRunningTime() - StartTime) < time do
        if not IsMouseButtonPressed(mb) then
            return _MOUSE_BUTTON_BREAK
        end
        Sleep(10)
    end
    return _TIME_BREAK
end