- var f = (payauto_field.name == 'CARD_payauto') ? 'card_billday' : 'chek_billday';
- f = document.getElementById(f);
- if ( f == null) return;
- if(payauto_field.checked) f.style.display = '';
- else f.style.display = 'none';
+ var span = (payauto_field.name == 'CARD_payauto') ? 'card_billday' : 'chek_billday';
+ var select = document.getElementById('select_'+span);
+ span = document.getElementById(span);
+ if (span == null || select == null) return;
+ if(payauto_field.checked) {
+ span.style.color = '#000000';
+ select.disabled = false;
+ }
+ else {
+ span.style.color = '#999999';
+ select.disabled = true;
+ select.selectedIndex = 0;
+ }