Mandarin Popup add on Rated 5 out of 5 stars

Using Windows XP 32 bit and Firefox 14.01, Mandarin Popup works fine, very easy to read the tone marks, pop up box is clearcut without any frills.
I also appreciate the up to date references on people, places, events etc. that I don't find in my commercial dictionary.
Thank you very much! July 31st 2012. Pat