Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Your opponent cannot target face-up Dragon-Type monsters you control for attacks. If this card on the field would be destroyed by battle or by a card effect, you can send 1 Dragon-Type monster from your hand to the Graveyard instead.
--ドラゴン・ウィッチ－ドラゴンの守護者－
--Lady of D.
local s,id=GetID()
function s.initial_effect(c)
	--cannot be battle target
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(0,LOCATION_MZONE)
	e1:SetValue(s.atlimit)
	c:RegisterEffect(e1)
	--destroy replace
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_DESTROY_REPLACE)
	e2:SetTarget(s.desreptg)
	c:RegisterEffect(e2)
end
function s.atlimit(e,c)
	return c:IsFaceup() and c:IsRace(RACE_DRAGON)
end
function s.desreptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return not c:IsReason(REASON_REPLACE)
		and Duel.IsExistingMatchingCard(Card.IsRace,tp,LOCATION_HAND,0,1,nil,RACE_DRAGON) end
	if Duel.SelectEffectYesNo(tp,e:GetHandler(),96) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
		local g=Duel.SelectMatchingCard(tp,Card.IsRace,tp,LOCATION_HAND,0,1,1,nil,RACE_DRAGON)
		Duel.SendtoGrave(g,REASON_EFFECT|REASON_REPLACE)
		return true
	else return false end
end