What do the official parties think about the environment?

I was wondering what the political parties think about the environment. I had some assumptions, I confess. But I wanted to know what the diffrent parties would say about it. What would be their official stance on the environment? I don't know what republicans think about the environment. Maybe they have it as a priority. Or if not maybe they mention it.

Here are links to four main party websites

Democrats
http://www.democrats.org/a/national/clean_environment/

Green party
http://www.gp.org/platform/2004/ecology.html#771441

Republican ... page 51
http://www.gop.com/media/2004platform.pdf

Libertarian
http://www.lp.org/issues/environment.shtml