If you haven't already close the curtains, put the dog as far into the house (and as far away from the fireworks) as possible, try putting the radio or tv up to muffle the noise somewhat.
If you've got a car then you could always try driving to the middle of nowhere and taking the dog for a walk, that usually works quite well, it means you spend most of the evening out in the cold but it is better than the distress caused to the dog.