function configEvent:PLAYER_LOGIN()
	
	addon.aboutPanel = LoadAboutFrame()
	
	--bg shown
	local btnBG = createCheckbutton(addon.aboutPanel, L.SlashBGInfo)
	btnBG:SetScript("OnShow", function() btnBG:SetChecked(LagBar_DB.bgShown) end)
	btnBG.func = function(slashSwitch)
		local value = LagBar_DB.bgShown
		if not slashSwitch then value = btnBG:GetChecked() end

		if value then
			LagBar_DB.bgShown = false
			DEFAULT_CHAT_FRAME:AddMessage(L.SlashBGOff)
		else
			LagBar_DB.bgShown = true
			DEFAULT_CHAT_FRAME:AddMessage(L.SlashBGOn)
		end
		
		addon:BackgroundToggle()
	end
	btnBG:SetScript("OnClick", btnBG.func)
	
	addConfigEntry(btnBG, 0, -20)
	addon.aboutPanel.btnBG = btnBG

	--set bg
	addon:BackgroundToggle()