function disableSelectKlasse() {
  if (selectBeruf.options[selectBeruf.selectedIndex].value == '0') {
    selectKlasse.disabled = true;
  } else {
    selectKlasse.disabled = false;
  }
}
/**
 * Disables the selectKlasse element if no Beruf (job) is selected
 */
Disables the selectKlasse element if no Beruf (job) is selected
Disables the selectKlasse element if no Beruf ( job ) is selected
function disableSelectKlasse() {
  if (selectBeruf.options[selectBeruf.selectedIndex].value == '0') {
    selectKlasse.disabled = true;
  } else {
    selectKlasse.disabled = false;
  }
}
function disableSelectKlasse ( ) { if ( selectBeruf . options [ selectBeruf . selectedIndex ] . value == '0' ) { selectKlasse . disabled = true ; } else { selectKlasse . disabled = false ; } }
Disables the selectKlasse element if no Beruf (job) is selected
Disables the selectKlasse element if no Beruf ( job ) is selected