Simple js form work. Submit to 1 of 2 pages, based on zip.

We have a simple HTML form with four fields. (first name, last name, email, zip code) We need to add javascript that will send the user to '[login to view URL]' on submit, IF the zip code they enter is in our state. All other zip codes need to be sent to the default form action ([login to view URL]). I will provide the following: - A list of zip codes in our state. (700 total) - The HTML form (attached) All we need is the working code. No installation necessary.