How do you use Google translations on a site or document?
Maybe answered by the time I scribble this.
Go to
http://www.google.com/language_tools?hl=en
Several options, searching for specific language in specific locales
Translating text copied from a page
or
Translating an entire web page.
Go to a site with papers, for example,
http://www.ipl.org/div/news/
pick a country
find a newspaper
go to main page
grab the URL, paste into "Translate a web page" option and see what you get.
What is nice about the Translate a web page option is that if you stay within it, meaning, selecting links within the translated page, the machine tries to keep on translating for you.