In regard to your first question, certainly there is additional cost for the energy efficiency program Energy Star and some of the others that are out there. One of the things that leads to the success of this program is that we can clearly demonstrate a healthier home, a more comfortable home, and that the carrying costs on the added capital investment are minimal compared to the savings in utility costs.
That's what makes the program so successful: one, it's a voluntary program; and two, builders are using all their might and their marketing abilities to educate the public. An important part of that program is that builders are behind it.
It's interesting. Builders are very much creating the marketplace as opposed to reacting to the marketplace. I think it's very, very important that we understand that we are actually pushing the marketplace in this situation.