public Norm containsNorm(Action ac, NormType nt)
	{
		for ( Norm norm: getAllRestrictNorms().values() )
		{
			Action a = norm.getNormResource().getAction();
			if ( a!=null && a.getName().equalsIgnoreCase(ac.getName()) && norm.getNormType() == nt && norm.isActive() )
			{
				return norm;
			}
		}

		return null;
	}