WoWInterface - OnLoad script error (Please help!)

Ok.. I'm writing a script that does a few things when a player/pet enters combat. I've fleshed out the whole .lua/.xml/.toc files, and went to load it for the first time. Here's the error that I get in WoW when the script loads.

Code:

String: Interface\AddOns\BarSwitch\BarSwitch.lua

Line: 14

Count: 1

Error: `=' expected near `BarSwitch_OnLoad'

--------------------------------------------------

String: Frame_BarSwitch:OnLoad

Line: 2

Count: 1

Error: attempt to call global `BarSwitch_OnLoad' (a nil value)

Here's the offending code in the .lua starting at line 14.

Code:

fuction BarSwitch_OnLoad()



        -- Registers Events

        this:RegisterEvent("VARIABLES_LOADED");

        this:RegisterEvent("PLAYER_REGEN_DISABLED");

        this:RegisterEvent("PLAYER_REGEN_ENABLED");

        this:RegisterEvent("PET_ATTACK_START");

        this:RegisterEvent("CHAT_MSG_SYSTEM");

        

        -- Registers Slash Commands

        SLASH_BarSwitch1 = "/BarSwitch";

        SLASH_BarSwitch2 = "/bs";

        SlashCmdList["BarSwitch"] = function(msg)

                BarSwitch_ChatCommandHandler(msg);

        end

        

        ChatMessage("BarSwitch v1.0 by Eilina Loaded");

        

end

and now the .xml file.

Code:

<Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/ C:ProjectsWoWBinInterfaceFrameXMLUI.xsd">

        <Script file="BarSwitch.lua"/>

        <Frame name="Frame_BarSwitch" hidden="true">

                <Scripts>

                        <OnLoad>

                                BarSwitch_OnLoad();

                        </OnLoad>

                        <OnEvent>

                                BarSwitch_OnEvent(event, arg1);

                        </OnEvent>

                </Scripts>

        </Frame>

</Ui>

I'm assuming the error generated from the xml file is because of the error in the lua file, and will go away once the lua is fixed. I however cannot see an error in the lua file to save my life. Any ideas what could be wrong?