Where can I find a spanish dictionary add-on for firefox?

I use the "Dictionary tool-tip" add-on for firefox to double click words that I don't know the meaning of, but it's only in English. Is there a similar add-on but in Spanish?|||yes but I can't send a link because you have to click on add-ons then search for 'Spanish dictionary' for yourself - about five options come up and 2 of these look promising. Always get the ones with the green 'jigsaw' piece if you can as these are the official ones.