Linking 2 select fields

[lynwitter]

Is there a way that I can create 2 seperate select fields that connect in one ticket request?

For example:

Field #1: Select one of the following:
1. Fiction
2. Non-Fiction
3. Biography

THEN, Depending on what they select, they have a different list displayed.

Field #2: IF Fiction is selected, pick one of the following:
1.1 This Prt esent Darkness
1.2 Eat, Pray, Love
1.3 The spy wore red
1.4 Gone with the wind


Field #2: IF Biography is selected, Pick one of the following:
3.1 Marten Luther king
3.2 Marilyn Manroe
3.3 George Bush


This way, I can display my inventory and then can select only something that I have in stock... which will allow me to change the inventory on the fly and not have to notify customers.



Thanks a bunch to anyone who can lend a hand!
Lyn