So, we have an existing Rails 2.3.5 app that does not support Internationalization at all. Now, I\'m well familiar with Rails I18n stuff, but we have a LOT of output strings
For applications like the one you described "that does not support Internationalization at all" and "is too late to fix it now" I wrote a very quick approach: the jQuery plugin Quick-i18n: https://github.com/katio/Quick-i18n demo (and how to use it): http://johannpaul.net/Quick-i18n/