Dynamic SelectBoxes/DropDownLists

Hi,

I’d like to implement in my project dynamic dropdown lists.
Example:
user will select one option from the parent dropdown list, lets say
it’ll be COUNTRY and in the child dropdown will be generated all CITIES
tied with this selected country.

I could then have relevant info in my form. Country and one of its city.

I know, this is not much abour RoR, however it has something to do w/
Ajax. I really like autocomplete feature in RoR and I’m sure this
dynamic dropdowns should be done easy in Ajax too.

any clues…?

thanks and have a great day

-> keli (milos kelemen)