jquery.validation: работа с select и вывод сообщений о несоответствиях - Общие вопросы веб разработки

showErrors: function(errorMap, errorList) {
  $('#cu-error').hide();	
  if (this.numberOfInvalids() > 0) {
    this.defaultShowErrors();
    $('#cu-error').fadeIn(200);
  }
}

if (!$('form').valid()) return false;

$('#oda-dayscount :first').attr('selected', 'selected');

echo '<select id="oda-dayscount" name="dayscount" class="form-control" tabindex="0" required="true" aria-required="true">'.
  '<option disabled selected value="">'.JText::_('MOD_ORDER_DEMO_ACCESS_DAYSCOUNT').'</option>';
$i = 1;
if (!$dayscount_oda or $dayscount_oda < 1 or $dayscount_oda > 30) $dayscount_oda = 7;
while ($i <= $dayscount_oda) {
  switch ($i) {
    case 1: echo '<option value="'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC1').'">'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC1').'</option>'; break;
    case 2: echo '<option value="'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'">'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'</option>'; break;
    case 3: echo '<option value="'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'">'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'</option>'; break;
    case 4: echo '<option value="'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'">'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC2').'</option>'; break;
    default: echo '<option value="'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC3').'">'.$i.JText::_('MOD_ORDER_DEMO_ACCESS_DC3').'</option>';
  }
  $i++;
}
echo '</select>';

$('#oda-dayscount').val('');

function changeColor(){
    var colorMuted = $(".muted").css("color");
	var colorDefault = $(".?").css("color");
	if( $("#mySelect option:selected").index() == 0 ){
		$("#?").css("color",colorMuted);
	} else {
		$("#?").css("color",colorDefault);
	}
}
changeColor();
$("#mySelect").on("change",function(){
    changeColor();
});

if( !$("#mySelect").val() ){