[Jonisaurus]

local frame = CreateFrame("frame")
frame:RegisterEvent("PLAYER_REGEN_ENABLED")
frame:RegisterEvent("PLAYER_REGEN_DISABLED")
frame:RegisterEvent("PLAYER_LOGIN")
frame:RegisterEvent("UNIT_POWER")

local function HideAndShow(self, event, ...)
	local unitId, resource = ...
	local class, classFileName = UnitClass("player")
	if unitId == "player" and resource == "MANA" and classFileName == "SHAMAN" then
		print("ABC")
		for i = 1, 4 do
			local haveTotem, name = GetTotemInfo(i)
			for o = 1,4 do
				local frame = getglobal("XiTimers_Timer"..o)
				if event == "UNIT_POWER" and name == "" and event == "PLAYER_REGEN_DISABLED" then
					frame:Show()
				else
					frame:Hide()
				end
			end
		end
	end
end

frame:SetScript("OnEvent", HideAndShow)

Okay, this does not work. Can you help me here? Please :P
There is something wrong with that code, and I'm too tired to find the error.