Event.observe(window, 'load', function() {
    //if integral integration is on, manage employee radio

    if ($('is_employee-YES') != null) {
        if ($('is_employee-YES').checked) {
            var id = $('is_employee-YES').readAttribute('ref');
            $(id).show();
        }
        $('is_employee-YES').observe('click', function() {
            var id = $(this).readAttribute('ref');
            $(id).show();
        });

        $('is_employee-NO').observe('click', function() {
            var id = $(this).readAttribute('ref');
            $(id).hide();
        });
    }
});