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function KLHTM_Sunder()
	
	if UnitClass("player") ~= "Warrior" then
		return
	end
	
	-- 1) Check if the old position is fine
	if GetSpellName(KLHTM_SpellBookSunderIndex, "spell") ~= "Sunder Armor" then
		
		-- get spell number of spells
		local spelltabs = GetNumSpellTabs()
		local numspells = 0
		local i;	local temp
	
		for i = 1, spelltabs do
			_, _, _, temp = GetSpellTabInfo(i)
			numspells = numspells + temp
		end
	
		-- 2) locate sunder armor in the spell book
		for i = 1, numspells do
			if GetSpellName(KLHTM_SpellBookSunderIndex + i, "spell") == "Sunder Armor" then
				KLHTM_SpellBookSunderIndex = KLHTM_SpellBookSunderIndex + i
				break
				
			elseif i == numspells then
				return -- can't find sunder
			end
		end
	end
	
	-- Now we've found sunder. Check the cooldown		
	if GetSpellCooldown(KLHTM_SpellBookSunderIndex, "spell") == 0 then 
		
		-- Cast
		CastSpellByName("Sunder Armor()")
		KLHTM_SubmitSunderCast()
	end
end

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function KLHTM_SubmitSunderCast()
	
	KLHTM_RegisterHit("Sunder Armor", 0, false, UnitName("target"))
	KLHTM_RedrawTable(KLHTM_MainWindow)
end