01.function Check(Type_Code, Grade, Speed) {
02. var comboboxA = document.getElementById(Type_Code);
03. var comboboxB = document.getElementById(Grade);
04.
05.
06.
07. if (comboboxA.value.substring(0, RadType.value.indexOf(' ')) == 'A' ) {
08.
09. comboboxB.style.display = 'none';
10. comboboxB.value = '-';
11.
12.
13. }
14. else {
15. comboboxB.style.display = ''
16.
17. }
