The Google Translate Tool
The Google Translate Tool is available from http://translate.google.com/translate_tools. To use it:
1. Choose your website language.
2. Choose to translate to all supported languages or a specific selection.
3. Copy the code provided into your web page.
Like most translation tools, a drop-down list of supported languages is provided on your page in the location where the code was pasted.
However, if your browser is set to a default language other than the one you’re viewing, a translation bar automatically appears at the top of the page. The bar is provided in the visitor’s language and offers a one-click translation process.
The Google translation tool supports over 50 languages. Even Welsh.
Example page is here http://blogs.sitepointstatic.com/examples/tech/translate/index.html
more about Google translate tool – http://translate.google.com/translate_tools