Translate the words you don't know in an instant. Configure BabelFish to translate a text: -with a middle mouse click -with Alt+leftclick -via context menu -just by highlighting -just by hovering a word with the mouse -doing a single mouseclick without highlighting BabelFish offers a great number of configurable mouse options and even supports keyboard only operations. The translation will be displayed as tiny tooltip on the same page, right below the text you wished to translate. So you can keep your eyes on the text and there is no need to close another translation-window. Currently available translation services are Google and Yahoo. Quickly switch to the other service to see an alternative translation result. This is an important feature as the provided translations often have different meanings. Easily switch the translation direction: The backwards translation offers a good way to check a translation for correctness. BabelFish even works inside input-fields and text-areas. To change the language you may use the statusbar icon, the FireFox tools menu or click 'L' while a translation tooltip is visible. Configuration of predefined language pairs is possible too. A copy button makes it easy to copy the translation result to another destination.