Using a Spry Accordion widget

You can split large amount of fields using an accordion widget, then leverage tmt.validator.validateChildFields() to validate one section at time. This sample uses an accordion from the Spry framework

Spry accordion

Optional info

Date (not required, date, YYYY-MM-DD)
Comments (not required, min 3 chars, max 10)

Personal info

Age (required, positive integer, min 18, max 75)
Name (required, string, no leading or trailing spaces)

Ladies

You would like to take a drink with:	Nicole Kidman Kate Beckinsale Jennifer Connelly Salma Hayek Gisele Bündchen Emmanuelle Beart Liz Hurley
You would like to take go for a dinner with:

Italy

Italy's major contributions to modern civilization?
(pick at least one)

Pizza
Spaghetti
Sophia Loren
Leonardo Da Vinci