Death Knight kgPanels Talent Name?

[Buttonmasher]

I'm implementing talent tree backgrounds back onto the talent frame (PlayerTalentFrame), and I'm using a script through kgPanels in both OnLoad and OnEvent. However, I can't find the correct "Death Knight" name for it to load properly. The Lua goes as follows:

self:RegisterEvent("ACTIVE_TALENT_GROUP_CHANGED")
self:RegisterEvent("PLAYER_LOGIN")
if UnitClass("player") == "DEATHKNIGHT" and select(2, GetSpecializationInfo(GetSpecialization())) == "Frost" then
self:Show()
else
self:Hide()
end

I've tried all combinations of Death Knight, DEATH KNIGHT, DeathKnight, DEATHKNIGHT (the last one is the one that works for class colours.) I also tried FROST, Frost, etc. That doesn't seem to help, and I don't believe the spec is case sensitive (though I could be wrong. However, I removed the spec portion and it still didn't work.)

Any help with this is appreciated. (Example of one of the images I'm using to replace the old Prot background:
Comparison to old background: http://db.vanillagaming.org/?talent#L

[Overdispersion]

UnitClass("player") == "DEATHKNIGHT" should be if select(2,UnitClass("player")) == "DEATHKNIGHT" I think since first parameter returns some weird French stuff.
http://wow.gamepedia.com/API_UnitClass

[Buttonmasher]

UnitClass("player") == "DEATHKNIGHT" should be if select(2,UnitClass("player")) == "DEATHKNIGHT" I think since first parameter returns some weird French stuff.
http://wow.gamepedia.com/API_UnitClass

Worked perfectly. Thanks mate!