① 網頁製作問題如何把各省市縣連接起來
定義子類。。。XX省下的市全部在該分項內
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>關聯選擇</title>
</head>
<body onload="SelectCity();selectarea();">
<p></p>
<form name="form1">
<select name="sel" onchange="selectarea();">
<option selected value="">-選擇地區-</option>
<option value="00">華北地區</option>
<option value="01">華東地區</option>
<option value="02">華南地區</option>
<option value="03">華西北地區</option>
<option value="04">華東南地區</option>
<option value="05">華東北地區</option>
<option value="06">華西南地區</option>
<option value="07">華中地區</option>
</select>
<select onchange="SelectCity();" name="selarea">
<option selected value=>-省/直轄市-</option>
</select> <select name="city">
<option value selected>-地區/城市-</option>
</select></form>
<script language="javascript">
var thecity = new Array("0000北京市","0100天津市","0200 秦皇島市","0201滄州市","0202廊坊市","0203衡水市","0204石家莊市",
"0205邯鄲市","0206邢台市","0207保定市","0208張家口市","0209承德市","0210唐山市","0300太原市","0301大同市",
"0302陽泉市","0303長治市","0304晉城市","0305朔州市","0306忻州地區","0307晉中地區","0308呂梁地區",
"0309臨汾地區","0310運城地區","0400呼和浩特市","0401包頭市","0402烏海市","0403赤峰市","0404烏蘭察布盟",
"0405錫林郭勒盟","0406呼倫貝爾盟","0407哲里木盟","0408巴彥淖爾盟","0409伊克昭盟","0410阿拉善盟",
"0411興安盟","0500沈陽市","0501大連市","0502鞍山市","0503撫順市","0504本溪市","0505丹東市","0506錦州市",
"0507葫蘆島市","0508營口市","0509盤錦市","0510阜新市","0511遼陽市","0512鐵嶺市","0513朝陽市","0600長春市",
"0601吉林市","0602四平市","0603遼源市","0604通化市","0605白山市","0606松原市","0607白城市","0608延邊自治州",
"0700哈爾濱市","0701齊齊哈爾市","0702鶴崗市","0703雙鴨山市","0704雞西市","0705大慶市","0706伊春市",
"0707牡丹江市","0708佳木斯市","0709七台河市","0710黑河市","0711綏化地區","0712大興安嶺地區","0800上海市",
"0900南京市","0901徐州市","0902連雲港市","0903淮陰市","0904宿遷市","0905鹽城市","0906揚州市","0907泰州市",
"0908南通市","0909鎮江市","0910常州市","0911無錫市","0912蘇州市","1000杭州市","1001寧波市","1002溫州市",
"1003嘉興市","1004湖州市","1005紹興市","1006金華市","1007衢州市","1008舟山市","1009台州市","1010麗水地區",
"1100淮北市","1101蕪湖市","1102銅陵市","1103蚌埠市","1104馬鞍山市","1105安慶市","1106黃山市","1107滁州市",
"1108阜陽市","1109宿州市","1110安徽省直轄市","1111巢湖地區","1112宣城地區","1113池州地區","1114六安地區",
"1115合肥市","1116淮南市","1200福州市","1201廈門市","1202三明市","1203莆田市","1204泉州市","1205漳州市",
"1206南平市","1207龍岩市","1208寧德地區","1300南昌市","1301景德鎮市","1302萍鄉市","1303新余市","1304九江市",
"1305鷹譚市","1306贛州市","1307上饒地區","1308宜春地區","1309撫州地區","1310吉安地區","1400濟南市",
"1401青島市","1402淄博市","1403棗庄市","1404東營市","1405濰坊市","1406煙台市","1407威海市","1408濟寧市",
"1409泰安市","1410日照市","1411萊蕪市","1412德州市","1413臨沂市","1414聊城市","1415濱州地區","1416菏澤地區",
"1500鄭州市","1501開封市","1502洛陽市","1503平頂山市","1504焦作市","1505鶴壁市","1506新鄉市","1507安陽市",
"1508濮陽市","1509許昌市","1510漯河市","1511山門峽市","1512南陽市","1513商丘市","1514信陽市",
"1515河南省直轄區","1516周口地區","1517駐馬店地區","1600武漢市","1601黃石市","1602襄樊市","1603十堰市",
"1604荊州市","1605宜昌市","1606鄂州市","1607孝感市","1608黃岡市","1609咸寧市","1610湖北省直轄區",
"1611荊門市","1612恩施自治州","1700長沙市","1701株洲市","1702湘潭市","1703衡陽市","1704邵陽市",
"1705岳陽市","1706常德市","1707張家界市","1708湘西自治州","1709郴州市","1710益陽市","1711永州市","1712懷化市",
"1713婁底地區","1800廣州市","1801深圳市","1802珠海市","1803汕頭市","1804韶關市","1805河源市","1806梅州市",
"1807惠州市","1808汕尾市","1809東莞市","1810中山市","1811江門市","1812佛山市","1813陽江市","1814湛江市",
"1815茂名市","1816肇慶市","1817雲浮市","1818清遠市","1819潮州市","1820揭陽市","1900南寧市","1901柳州市",
"1902桂州市","1903梧州市","1904北海市","1905防城港市","1906欽州市","1907貴港市","1908玉林市","1909南寧地區",
"1910柳州地區","1911賀州地區","1912百色地區","1913河池地區","2000海口市","2001三亞市","2002文昌市",
"2003儋州市","2004瓊海市","2005東方市","2006海南省直轄區","2100重慶市","2200成都市","2201自貢市",
"2202攀枝花市","2203瀘州市","2204德陽市","2205廣元市","2206遂寧市","2207內江市","2208樂山市","2209南充市",
"2210綿陽市","2211宜賓市","2212廣安市","2213達川市","2214巴中地區","2215雅安地區","2216眉山地區",
"2217資陽地區","2218阿壩自治洲","2219甘孜自治州","2220涼山自治州","2300貴陽市","2301六盤水市","2302遵義市",
"2303侗仁地區","2304畢節地區","2305安順地區","2306黔西南自治州","2307黔東南自治州","2308黔南自治州",
"2400昆明市","2401曲靖市","2402玉溪市","2403昭通地區","2404思茅地區","2405臨滄地區