Javascript css help

I have a 2 page form whereby 2 form variables are passed from the first form to the second form in hidden fields. On the second form a javascript/css behaviour controls an optional field that is displayed or hidden depending on the value of one of those fields (through onChange) However since passing those variables to a hidden fields the javascript has stopped working. My project is to get it working again, it is fairly easy to understand when you see the form working! ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform html/php web form viewable in IE and Firefox browsers