function submit(){

var firstName = document.getElementById("fn");
var lastName = document.getElementById("ln");
var email = document.getElementById("email");
var emailR = document.getElementById("emailR");
var userName = document.getElementById("un");
var password = document.getElementById("pass");
var passwordR = document.getElementById("passR");

var error = "";
var letters = /^[a-zA-Z]+$/;
var postal = document.getElementById("pc");
var code = /^[A-Za-z]d[A-Za-z][ -]?d[A-Za-z]d$/;

if (firstName === null || firstName.length > 15 || !firstName.value.match(letters))
{

    error += "Please enter a valid first name.";

}


if (lastName === null || lastName.length > 15 || !lastName.value.match(letters))
{

    error += " Please enter a valid last name";
}

var ei = email.value.lastIndexOf('@');
var dot = email.value.lastIndexOf('.');

if (email === null || email.length < 7 || ei == -1 || dot == -1 || dot < ei + 2 )
{
    error +=  " Please enter a valid email address";
}

if (emailR != email)
{
    error += " Your email addresses did not match";
}




if (postal === null || !postal.length == 7 || !postal.value.match(code))
{
    error += "Postal code must follow Canadian standard. E.g. "N3H 1M1" ";

}

if (userName === null || userName.length > 15)
{

    error += " Please enter a valid username (must be less than 15 characters)";
}

if (password === null || password.length > 15)
{
    error += "please enter a valid password (must be less than 15 characters)";

}

if (passwordR != password)
{
    error += "your passwords do not match";

}





if (error === "")
{
    document.getElementById("test").innerHTML =  "Thank you for signing up!";

}

else if (error !== "")
{

    document.getElementById("test").innerHTML = error ;

}


}