[support] dependant content_taxonomy autocomplete textfields

[Daniel Caillibaud]

Hi,

In a CCK node type with drupal6, I have 2 content_taxonomy autocomplete textfield, but the vocabulary for the 2nd one (keyword)
should depend on the 1st choice (subject), because I have a fixed list of "keywords" terms (~1000) for each subject.
I can put all the keywords in a single vocabulary, where the first root entry is the subject, but I don't know what to do then
to filter availables words in the autocomplate field, depending on the subject choice in the first field...

Any idea about the best way to do this ? (all modules about dependant fields I saw are for D5)

Thanks a lot

-- 
Daniel