Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When an opponent's monster declares an attack: Target the attacking monster; negate the attack, also, after that, Set this card face-down instead of sending it to the GY.
--くず鉄のかかし 
--Scrap-Iron Scarecrow
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(1-tp)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local tg=Duel.GetAttacker()
	if chkc then return chkc==tg end
	if chk==0 then return tg:IsOnField() and tg:IsCanBeEffectTarget(e) end
	Duel.SetTargetCard(tg)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.NegateAttack()
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	if c:IsSSetable(true) and e:IsHasType(EFFECT_TYPE_ACTIVATE) then
		Duel.BreakEffect()
		c:CancelToGrave()
		Duel.ChangePosition(c,POS_FACEDOWN)
		Duel.RaiseEvent(c,EVENT_SSET,e,REASON_EFFECT,tp,tp,0)
	end
end