Help with fancy input form

[T2theC]

Hi Guys, Thanks for taking the time out to read this.

 

I want to make a form that inputs into my database. It is an invitation to an event. I am sending out emails to 5 databases of clients. Each database of clients will have a CODE to enter into my form. Each database of clients is allowed to bring either 1,3,5 guests.

 

What I need:

I want the user to enter their code in the form and then when the code is correct, the remaining form shooshes down with entry details for either 1,3,5 guests names.

 

I hope this all make sense. Please be gentle with me as I have very limited knowledge of JS. In fact, if you guys know any tutorials for this or somewhere I can copy and paste, that would be best. I've seen it on other sites, just never known how to go about it.

 

Many Thank