If you are looking for a facebook chat translator , you can easily download and plug in http://www.chromeextensions.org/language-translators/fbchatat/
A tool designed to help people trying to communicate over a language barrier while using Facebook Chat.
When you receive a message in Facebook Chat, the extension will automatically translate that message into your native language, then insert the translated text underneath the original message. This allows you to review/read the original messages and translation simultaneously while you chat.
To type in your native language and have it automatically translated out: An extra textbox is provided at the bottom left of the screen. Type into this box your text will be translated and shown in the space provided above. If/when you are happy with your outgoing message, press 'enter'. This will push the translated text into the current active chat flyout/window. Press 'enter' a second time to push the message into the chat stream.
You can also chat and translate conversations with your friends in Facebook using our chat application.