在“选择”和选项时隐藏选择块

I've tried to hide the section unsuccessfully. I need to hide it while at the same time making on option valid. Here is what I have:

    <select id="country_code" name="country_code" style="width:160px;">
    <?php
    if(count($GLOBALS['countries_codes_allowed'])>0) {
        foreach($GLOBALS['countries_codes_allowed'] as $ind=>$value) {
            echo '<option value="'.$value.'">'.$ind.'</option>';
        }           
    }
    ?>
</select>

I tried using the hidden tag, and it hid the section, however the option was not selected and the form did't work. I'm new at this. Any help will be appreciate it. Thanks