function onChangeMenu(n) {

itemNum = List[n].length;
TitemNum = itemNum -1;
document.F1.s_bunrui.length = TitemNum;

if(List[n][0] == '登録されていません') {
document.F1.s_bunrui.disabled = true;
for (i=0; i<1; i++) { document.F1.s_bunrui.options[i] = new Option(List[n][i],''); }
}
else if(List[n][0] == '大分類を選択してください') {
document.F1.s_bunrui.disabled = true;
for (i=0; i<1; i++) { document.F1.s_bunrui.options[i] = new Option(List[n][i],''); }
}
else {
document.F1.s_bunrui.disabled = false;
for (i=0; i<TitemNum; i++) { document.F1.s_bunrui.options[i] = new Option(List[n][i],i); }
}
}

function onChangeSerch(n) {

itemNum2 = List2[n].length;
TitemNum2 = itemNum2 -1;
document.F2.s_bunrui.length = TitemNum2;

if(List2[n][0] == '小分類はありません') {
document.F2.s_bunrui.disabled = true;
for (i=0; i<1; i++) { document.F2.s_bunrui.options[i] = new Option(List2[n][i],''); }
}
else if(List2[n][0] == '大分類を選択してください') {
document.F2.s_bunrui.disabled = true;
for (i=0; i<1; i++) { document.F2.s_bunrui.options[i] = new Option(List2[n][i],''); }
}
else {
document.F2.s_bunrui.disabled = false;
document.F2.s_bunrui.options[0] = new Option(List2[n][0],'');
for (i=1; i<TitemNum2; i++) { document.F2.s_bunrui.options[i] = new Option(List2[n][i],i-1); }
}
}