function validateRequired(field, text) {
    with (field) {
        if (value == null || value == "") {
            alert(text);
            return false;
        } else {
            return true;
        }
    }
}

function validateEmail(field, text) {
    with (field) {
        atPosition = value.indexOf("@");
        dotPosition = value.lastIndexOf(".");
        if (atPosition < 1 || dotPosition - atPosition < 2) {
            alert(text);
            return false;
        } else {
            return true;
        }
    }
}

function writeSubmitButton(name, value) {
    document.write('<p><input name="' + name + '" type="submit" value="' + value + '" /></p>');
}