arCity = new Array(
'台北市',
'基隆市',
'新北市',
'連江縣',
'宜蘭縣',
'釣魚台',
'新竹市',
'新竹縣',
'桃園縣',
'苗栗縣',
'台中市',
'彰化縣',
'南投縣',
'嘉義市',
'嘉義縣',
'雲林縣',
'台南市',
'高雄市',
'南海諸島',
'澎湖縣',
'金門縣',
'屏東縣',
'台東縣',
'花蓮縣'
);

arZipCode = new Array(
'100,103,104,105,106,108,110,111,112,114,115,116',
'200,201,202,203,204,205,206',
'207,208,220,221,222,223,224,226,227,228,231,232,233,234,235,236,237,238,239,241,242,243,244,247,248,249,251,252,253',
'209,210,211,212',
'260,261,262,263,264,265,266,267,268,269,270,272',
'290',
'300,300,300',
'302,303,304,305,306,307,308,310,311,312,313,314,315',
'320,324,325,326,327,328,330,333,334,335,336,337,338',
'350,351,352,353,354,356,357,358,360,361,362,363,364,365,366,367,368,369',
'400,401,402,403,404,406,407,408,411,412,413,414,420,421,422,423,424,426,427,428,429,432,433,434,435,436,437,438,439',
'500,502,503,504,505,506,507,508,509,510,511,512,513,514,515,516,520,521,522,523,524,525,526,527,528,530',
'540,541,542,544,545,546,551,552,553,555,556,557,558',
'600,600',
'602,603,604,605,606,607,608,611,612,613,614,615,616,621,622,623,624,625',
'630,631,632,633,634,635,636,637,638,640,643,646,647,648,649,651,652,653,654,655',
'700,701,702,704,708,709,710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,730,731,732,733,734,735,736,737,741,742,743,744,745',
'800,801,802,803,804,805,806,807,811,812,813,814,815,820,821,822,823,824,825,826,827,828,829,830,831,832,833,840,842,843,844,845,846,847,848,849,851,852',
'817,819',
'880,881,882,883,884,885',
'890,891,892,893,894,896',
'900,901,902,903,904,905,906,907,908,909,911,912,913,920,921,922,923,924,925,926,927,928,929,931,932,940,941,942,943,944,945,946,947',
'950,951,952,953,954,955,956,957,958,959,961,962,963,964,965,966',
'970,971,972,973,974,975,976,977,978,979,981,982,983'
);

arTowns = new Array (
'中正區,大同區,中山區,松山區,大安區,萬華區,信義區,士林區,北投區,內湖區,南港區,文山區',
'仁愛區,信義區,中正區,中山區,安樂區,暖暖區,七堵區',
'萬里區,金山區,板橋區,汐止區,深坑區,石碇區,瑞芳區,平溪區,雙溪區,貢寮區,新店區,坪林區,烏來區,永和區,中和區,土城區,三峽區,樹林區,鶯歌區,三重區,新莊區,泰山區,林口區,蘆洲區,五股區,八里區,淡水區,三芝區,石門區',
'南竿鄉,北竿鄉,莒光鄉,東引鄉',
'宜蘭市,頭城鎮,礁溪鄉,壯圍鄉,員山鄉,羅東鎮,三星鄉,大同鄉,五結鄉,冬山鄉,蘇澳鎮,南澳鄉',
'列嶼',
'東區,北區,香山區',
'竹北市,湖口鄉,新豐鄉,新埔鎮,關西鎮,芎林鄉,寶山鄉,竹東鎮,五峰鄉,橫山鄉,尖石鄉,北埔鄉,峨眉鄉',
'中壢市,平鎮市,龍潭鄉,楊梅鎮,新屋鄉,觀音鄉,桃園市,龜山鄉,八德市,大溪鎮,復興鄉,大園鄉,蘆竹鄉',
'竹南鎮,頭份鎮,三灣鄉,南庄鄉,獅潭鄉,後龍鎮,通霄鎮,苑裡鎮,苗栗市,造橋鄉,頭屋鄉,公館鄉,大湖鄉,泰安鄉,銅鑼鄉,三義鄉,西湖鄉,卓蘭鎮',
'中區,東區,南區,西區,北區,北屯區,西屯區,南屯區,太平區,大里區,霧峰區,烏日區,豐原區,后里區,石岡區,東勢區,和平區,新社區,潭子區,大雅區,神岡區,大肚區,沙鹿區,龍井區,梧棲區,清水區,大甲區,外埔區,大安區',
'彰化市,芬園鄉,花壇鄉,秀水鄉,鹿港鎮,福興鄉,線西鄉,和美鎮,伸港鄉,員林鎮,社頭鄉,永靖鄉,埔心鄉,溪湖鎮,大村鄉,埔鹽鄉,田中鎮,北斗鎮,田尾鄉,埤頭鄉,溪州鄉,竹塘鄉,二林鎮,大城鄉,芳苑鄉,二水鄉',
'南投市,中寮鄉,草屯鎮,國姓鄉,埔里鎮,仁愛鄉,名間鄉,集集鎮,水里鄉,魚池鄉,信義鄉,竹山鎮,鹿谷鄉',
'東區,西區',
'番路鄉,梅山鄉,竹崎鄉,阿里山鄉,中埔鄉,大埔鄉,水上鄉,鹿草鄉,太保市,朴子市,東石鄉,六腳鄉,新港鄉,民雄鄉,大林鎮,溪口鄉,義竹鄉,布袋鎮',
'斗南鎮,大埤鄉,虎尾鎮,土庫鎮,褒忠鄉,東勢鄉,台西鄉,崙背鄉,麥寮鄉,斗六市,林內鄉,古坑鄉,莿桐鄉,西螺鎮,二崙鄉,北港鎮,水林鄉,口湖鄉,四湖鄉,元長鄉',
'中西區,東區,南區,北區,安平區,安南區,永康區,歸仁區,新化區,左鎮區,玉井區,楠西區,南化區,仁德區,關廟區,龍崎區,官田區,麻豆區,佳里區,西港區,七股區,將軍區,學甲區,北門區,新營區,後壁區,白河區,東山區,六甲區,下營區,柳營區,鹽水區,善化區,大內區,山上區,新市區,安定區',
'新興區,前金區,苓雅區,鹽埕區,鼓山區,旗津區,前鎮區,三民區,楠梓區,小港區,左營區,仁武區,大社區,岡山區,路竹區,阿蓮區,田寮區,燕巢區,橋頭區,梓官區,彌陀區,永安區,湖內區,鳳山區,大寮區,林園區,鳥松區,大樹區,旗山區,美濃區,六龜區,內門區,杉林區,甲仙區,桃源區,那瑪夏區,茂林區,茄萣區',
'東沙,南沙',
'馬公市,西嶼鄉,望安鄉,七美鄉,白沙鄉,湖西鄉',
'金沙鎮,金湖鎮,金寧鄉,金城鎮,烈嶼鄉,烏坵鄉',
'屏東市,三地門鄉,霧台鄉,瑪家鄉,九如鄉,里港鄉,高樹鄉,鹽埔鄉,長治鄉,麟洛鄉,竹田鄉,內埔鄉,萬丹鄉,潮州鎮,泰武鄉,來義鄉,萬巒鄉,崁頂鄉,新埤鄉,南州鄉,林邊鄉,東港鎮,琉球鄉,佳冬鄉,新園鄉,枋寮鄉,枋山鄉,春日鄉,獅子鄉,車城鄉,牡丹鄉,恆春鎮,滿州鄉',
'台東市,綠島鄉,蘭嶼鄉,延平鄉,卑南鄉,鹿野鄉,關山鎮,海端鄉,池上鄉,東河鄉,成功鎮,長濱鄉,太麻里鄉,金峰鄉,大武鄉,達仁鄉',
'花蓮市,新城鄉,秀林鄉,吉安鄉,壽豐鄉,鳳林鎮,光復鄉,豐濱鄉,瑞穗鄉,萬榮鄉,玉里鎮,卓溪鄉,富里鄉'
);

function getCityPos( cityName ) {
	for(j =0;j < arCity.length;j++) {
		if ( cityName == arCity[j] ) return j;
	}
	return -1;
}

function createCity( city_field, cityName ) {
	var selCity = document.getElementById(city_field);
	if ( selCity == null ) return;
	for(j =0;j < arCity.length;j++) {
		var elOptNew = document.createElement('option');
    elOptNew.text = arCity[j];
    elOptNew.value = arCity[j];
		selCity.options.add( elOptNew );		
		if ( cityName == arCity[j] ) selCity.selectedIndex = j+1;		
	}	
	if ( cityName == "" ) selCity.selectedIndex = 0;
}

function changeTowns( city_field,town_field,zip_field, cityName,townName ) {
	var cityPos = 0;
	if ( cityName != "" ) {
		cityPos = getCityPos( cityName );
		if ( cityPos == -1 ) {
			alert("無此縣市！");
			return;
		}
	}
	var selTowns = document.getElementById(town_field);
	if ( selTowns == null ) return;
	for (j = (selTowns.length-1);j > 0;j--) {
		selTowns.remove(j);
  }

	arList = arTowns[cityPos].split(",");
	for(j =0;j < arList.length;j++) {
		var elOptNew = document.createElement('option');
    elOptNew.text = arList[j];
    elOptNew.value = arList[j];
		selTowns.options.add( elOptNew);
		if ( townName == arList[j] ) {
			selTowns.selectedIndex = j+1;	
		}
	}
	if ( townName == "" ) selTowns.selectedIndex = 0;	
	changeZipCode(city_field, town_field, zip_field);
}

function changeZipCode(city_field, town_field, zip_field ) {
	// 郵遞區號
	var selCity = document.getElementById(city_field);
	if ( selCity == null ) return;
	var selTowns = document.getElementById(town_field);
	var zipCode = document.getElementById(zip_field);
	
	
	var cityIndex = selCity.selectedIndex;
	if ( cityIndex < 1 ) {
		zipCode.value = "";
		return;
	}
	cityIndex = cityIndex -1;

	var townIndex = selTowns.selectedIndex;
	if ( townIndex < 1 ) {
		zipCode.value = "";
		return;
	}
	townIndex = townIndex -1;

	var zipAry = arZipCode[cityIndex].split(",");
	zipCode.value = zipAry[townIndex];
}