gTranslate , a Firefox translation extension that uses the Google translation services to translate the website text to other language. As gTranslate can translate English to German, Spanish, French, Italian, Portuguese, Korean, Chinese, Dutch, Greek,Russian, and vice versa.
With gTranslate you can translate any text in a web page just by selecting and right-clicking over it. It has auto-detection of browser locale and page language to translate the selected text to your locale.
gTranslate supports text translation from input fields, textarea fields, image title and alt attributes. You can download the latest version of gTranslate from https://addons.mozilla.org/en-US/firefox/addon/gtranslate