javascript heavy form

This is a form that is currently broken and needs to be working properly. It has a LOT of javascript in it and we really need a javascript guru to fix it within 24 hours. A lot of the code is already there, but there are a lot of glitches. - required fields need to be validated - there are 5 steps to the form, and they are all on 1 page and show/hide when you click the continue buttons - all the fields need to show up on the review page (step 5) - there are a lot of contingent fields, some of them need to validate ONLY when applicable.