Cascading choice list

[James Cook]

>I have a list of possible occupations for a person
>...
>The goal would be to provide subsets of choices that are specific to the
>initial category selected and if possible to go down to even more levels
>
>ie. Operator /Dozer /specific machinery choices/construction..pipeline/size
>of pipeline 18" 24" 30" /
>...
>Then a search for all operator/dozer with 24" pipeline qualifications could
>be selected. Or a selection based on any one of the choices in the chain
>above.

That's not terribly unlike scenarios I've dealt with more than a few 
times. I've found lists to be the simplest solution.

In the keywording for my METAmachine software, I use lists to allow 
you to drill through the hierarchy. As you highlight a choice in one, 
the next updates with the words of a matching sub-hierarchy. 
http://hsltd.us/metamachine/keywords.html

Or on Roofing Materials Library where we deal with many tens of 
thousands of hierarchies, we use multiple lists, with each selection 
triggering the selection of  the next level of words. 
http://www.roofingmaterialslibrary.com/demo/demo.html

-- 
James Cook
JC at JamesCook.biz
720-252-7042

Proficiencies
http://JamesCook.biz

Founder of HindSight Ltd.
http://HSLtd.us

Custom Panorama Applications
Specializing in Panorama Enterprise for the Web