function onMobSpawn(mob)
	-- Two hours to forced depop
    mob:setLocalVar("depopTime", os.time(t) + 7200);
end;

function onMobFight(mob,target)
	local depopTime = mob:getLocalVar("depopTime");
	if (os.time(t) > depopTime) then
		DespawnMob(i);
	end
end;