Simple Javascript Show/Hide Function Required

I have 16 table rows, each providing textbox1, textbox2 and textbox3. At present they do or course all appear to the user as options to fill in. What I simply want is this: Only the first row is shown on pageload. When they have entered values into BOTH textbox2 AND textbox3 (not concerned about textbox1 becaus it's optional), row 2 appears. When they have entered values into BOTH textbox2 AND textbox3 in Row2, row3 appears and so on. This would be so much neater than showing the client 16 rows (48 textboxes) when perhaps only 3 or 4 rows are needed on occasions. I have some similar code already working, showing html when a checkbox has been selected but I have been unable to hack it!!! Not important I guess but I'm running VS2005, ASPNET 2.0. Easy for you bods. Many thanks, Nick ## 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 all main browsers supporting javascript