Cleaning up js file

Question

I'm working on a project that I set functions to create a cookie based off of a form value. That cookie then populates another form's input values. At first, I only needed to set three cookies, so this wasn't overly big (calling the functions)... the requirements changed, and I went from needing three cookies to now needing eight, so my function calls are getting a little out of hand. Is there a more efficient way of doing this?

function setCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function getCookie(cname) {
    var name = cname + "=";
    var ca = document.cookie.split(';');
    for(var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') {
            c = c.substring(1);
        }
        if (c.indexOf(name) == 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}

function checkCookie(c, el) {
    var user = getCookie(c);
    if (user != "") {
        document.getElementById(el).value = user;
        document.getElementById(el).setAttribute("value", user);
        document.getElementById(el).setAttribute("readonly", "readonly");
    }
} 

function setEmployee(e, field) {
    var emp = getCookie(e);
    if (emp != "") {
        document.getElementsByClassName(field).value = emp;
        var perm = document.getElementsByClassName(field);
        perm[0].setAttribute("value", emp);

    }
}


$(document).ready(function(){
    var firstName = "firstName";
    var lastName = "lastName";
    var phoneCookie = "phone";
    var emailCookie = "email";
    var companyCookie = "company";
    var addressCookie = "address";
    var stateCookie = "state";
    var zipCookie = "zip";

    $('#form').submit(function(){
        var first = $('#FirstName').val();
        var last = $('#LastName').val();
        var phone = $('#Phone').val();
        var email = $('#Email').val();
        var company = $('#Company').val();
        var address = $('#Address').val();
        var state = $('#State').val();
        var zip = $('#PostalCode').val();

        setCookie(firstName, first, 10);
        setCookie(lastName, last, 10);
        setCookie(phoneCookie, phone, 10);
        setCookie(emailCookie, email, 10);
        setCookie(companyCookie, company, 10);
        setCookie(addressCookie, address, 10);
        setCookie(stateCookie, state, 10);
        setCookie(zipCookie, zip, 10);
    });

    if($('#census').is(':visible')){
        checkCookie(firstName, "contactName");
        checkCookie(lastName, "contactLast");
        checkCookie(phoneCookie, "contactPhone");
        checkCookie(emailCookie, "contactEmail");
        checkCookie(companyCookie, "contactCompany");
        checkCookie(addressCookie, "contactAddress");
        checkCookie(stateCookie, "contactState");
        checkCookie(zipCookie, "contactZip");
    }
});