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[diegoz]

Hi guys!
I'm trying to organize an advanced search system with the following feature:

Main category: CAT1 (and others)

Child categories (CAT1): A - B - C

Child categories (CAT1)(A): A1 - A2 - A3
Child categories (CAT1)(B): B1 - B2 - B3
Child categories (CAT1)(C): C1 - C2 - C3

I would like to have 3 dropdown menu:

The first one to choose the main category (e.g. CAT1)
The second one to choose the child category: (e.g. A)
If the category "A" is selected, I want the third dropdown menu to show only A1-A2-A3.
Is it possible? I'm after this basic (I guess!) functionality but it seems not to be created with adv. search according to parameters.
Is there anyone who can help me on this? I would really appreciate!

Thank's a lot.