Conditional Form Elements

I am creating a registration form that is being input into a database. This is a long form that will include inputting into relational tables. The database has an enum "payBy" column with the options: 'check', 'credit card', 'paypal', 'no charge' in the main table.

I would like part of the form to be conditional. I have a repeated dynamic checkbox that is being created from another table (needed in order to do the manage relational table behavior) There are 9 options where I would like 6 of them to bring up a radio group or checkbox group that they can select to pay by check, credit card, or paypal (this will be inputted into the payBy column in the main table). The other 3 check boxes, I would like to have the option to input "no charge" either by a hidden field or by a check box that is pre-selected (also inputted into the payBy column in the main table).

What would be the best way to approach this with the validation toolkit? Much of the form will be validated client and server side.

Thank you in advance,
Christina

You could do this with show/hide layer client validation response. You will need to setup the triggering client validations for the checkbox that will hide or show the area, then as a response to the validation you use the show/hide layer to either display or hide the other form elements. You should probably also add in a validation response pair for conditionally validating these form elements.

I'm including an example page that has the show/hide layer applied to it with checkboxes so that you can see how it is setup and how it works in the end.