Sending Form Data in URL

Basically I already have a contact form built, and I need fields A and B to be appended to a URL and and 2 HTTP requests made (upon pressing submit). This is in order to take a Username and Password field that a user fills out on the form and have them interact with an API that works like this: Create User: [login to view URL][ACCOUNTID]&token=[TOKEN]&email=[FIELD A FROM THE FORM]&password=[FIELD B FROM THE FORM] Authenticate User: [login to view URL][ACCOUNTID]&token=[TOKEN]&email=&password=test We can provide the account id and token (that will be static) upon project commencement. If you have a better idea on how to make this work let me know. The form is built with html/javascript.