function country_select() {
    var valc = gbi('country');
    if (valc.value == 'US') {
        setdivdisplay('AmericanState', 'block');
        setdivdisplay('NonAmericanState', 'none');
    } else {
        setdivdisplay('AmericanState', 'none');
        setdivdisplay('NonAmericanState', 'block');
    }
}

var emailRegxp = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,3}$/;

var validate_name = /^[A-z]/

var vp = /^[0-9A-z]+$/

function validate_email() {
    if (rev = document.getElementById('email_address')) {
        if (emailRegxp.test(rev.value))
            return true;
        alert("Please enter a correct email address");
        rev.focus();
        rev.select();
        return false;
    }
    return true;
}

function validate_names() {
    if (first_name = gbi('first_name'))
    if (last_name = gbi('last_name')) {
        if (first_name.value.length == 0) {
            alert("Your first name cannot be empty. Please use a pseudonym if you are concerned about privacy issues.");
            return false;
        }
        if (last_name.value.length == 0) {
            alert("Your last name cannot be empty. Please use a pseudonym if you are concerned about privacy issues.");
            return false;
        }
        if (validate_name.test(first_name)) {
            if (validate_name.test(first_name)) {
                return true;
            } else
                alert("Please enter a correct last name. Use A-z characters only");
        } else
            alert("Please enter a correct first name. Use A-z characters only");
        return false;
    }

}

function validate_password() {
    var p = gbi('passwordtype');
    if (p.value == 1) {
        var pw = gbi('password');
        //alert(pw.value.length);
        if (pw.value.length < 8) {
            alert("A valid password must be at least 8 characters in length for your security");
            pw.value = "";
            pw.focus();
            pw.select();
            return false;
        }
        if (vp.test(pw.value))
            return true;
        alert('Password must only contain following characters: 0-9, A-z');
        return false;
    }
    return true;
}

function validate_bio() {

    return true; // no longer checks the length of the bio

    var bio = gbi('bio');
    if (bio.value.length < 500) {
        alert('your biography must contain at least 500 characters. You have ' + (500 - bio.value.length) + ' to go!');
        return false;
    }
    return true;
}

function validate_birthdate() {

    var bd = gbi('bdday');
    var by = gbi('bdyear');
    var bm = gbi('bdmonth');
    var day = bd.value;
    var year = by.value;

    if (bm.value == 0) {
        alert('Please choose birthdate month');
        return false;
    }

    if (isnumeric(day) && day > 0 && day < 32) {
        if (isnumeric(year) && year >= 1900 && year <= 2000) {
        } else {
            alert('Please enter correct birthdate; year must be a number between 1900 and 1990');
            by.focus();
            by.select();
            return false;
        }
    } else {
        alert('Please enter correct birthdate; day must be a number between 1-31');
        bd.focus();
        bd.select();
        return false;
    }

    return true;
}

// not yet used.
function validate_country() {
    var c = gbi('country');
    return true;
}

function validate_information() {
    if (validate_email())
    if (validate_names())
    if (validate_birthdate())
    if (validate_password())
    if (validate_bio())
        return true;
    return false;
}

function update_display_name() {
    var fn = gbi('first_name');
    var ln = gbi('last_name');
    var a = new Array(fn.value, ln.value);
    for (i = 0; i < 2; i++) {

        var s = a[i];

        if (s.length == 1)
            s.toUpperCase();
        else
        if (s.length > 1) {
            var p1 = s.substring(0, 1).toUpperCase();
            var p2 = s.substring(1, s.length);
            a[i] = p1 + p2;
        }
    }

    var dn = a[0] + " " + a[1];
    var d = gbi('display_name');
    d.value = dn;
}