function showtown()
{
	var city;
	var town;
	var str;


      city = document.getElementById("city");
      town = document.getElementById("town");
      str = "<select id=\"town\" name=\"town\"\"><option value=\"%\">請選擇</option>";

   if (city.value == "台北市")
   {
     str += "<option value='中正區'>中正區</option>";
     str += "<option value='大同區'>大同區</option>";
     str += "<option value='中山區'>中山區</option>";
     str += "<option value='松山區'>松山區</option>";
     str += "<option value='大安區'>大安區</option>";
     str += "<option value='萬華區'>萬華區</option>";
     str += "<option value='信義區'>信義區</option>";
     str += "<option value='士林區'>士林區</option>";
     str += "<option value='北投區'>北投區</option>";
     str += "<option value='內湖區'>內湖區</option>";
     str += "<option value='南港區'>南港區</option>";
     str += "<option value='文山區'>文山區</option>";
   }
   else if (city.value == "基隆市")
   {
     str += "<option value='中正區'>中正區</option>";
     str += "<option value='中山區'>中山區</option>";
     str += "<option value='仁愛區'>仁愛區</option>";
     str += "<option value='信義區'>信義區</option>";
     str += "<option value='安樂區'>安樂區</option>";
     str += "<option value='暖暖區'>暖暖區</option>";
     str += "<option value='七堵區'>七堵區</option>";
   }
   else if (city.value == "新竹市")
   {
     str += "<option value='東區'>東區</option>";
     str += "<option value='北區'>北區</option>";
     str += "<option value='香山區'>香山區</option>";
   }
   else if (city.value == "嘉義市")
   {
     str += "<option value='東區'>東區</option>";
     str += "<option value='西區'>西區</option>";
   }
   else if (city.value == "台中市")
   {
     str += "<option value='東區'>東區</option>";
     str += "<option value='南區'>南區</option>";
     str += "<option value='西區'>西區</option>";
     str += "<option value='北區'>北區</option>";
     str += "<option value='中區'>中區</option>";
     str += "<option value='南屯區'>南屯區</option>";
     str += "<option value='西屯區'>西屯區</option>";
     str += "<option value='北屯區'>北屯區</option>";
   }
   else if (city.value == "台南市")
   {
     str += "<option value='東區'>東區</option>";
     str += "<option value='南區'>南區</option>";
     str += "<option value='西區'>西區</option>";
     str += "<option value='北區'>北區</option>";
     str += "<option value='中區'>中區</option>";
     str += "<option value='安南區'>安南區</option>";
     str += "<option value='安平區'>安平區</option>";
   }
   else if (city.value == "高雄市")
   {
     str += "<option value='三民區'>三民區</option>";
     str += "<option value='前鎮區'>前鎮區</option>";
     str += "<option value='苓雅區'>苓雅區</option>";
     str += "<option value='左營區'>左營區</option>";
     str += "<option value='楠梓區'>楠梓區</option>";
     str += "<option value='小港區'>小港區</option>";
     str += "<option value='鼓山區'>鼓山區</option>";
     str += "<option value='新興區'>新興區</option>";
     str += "<option value='前金區'>前金區</option>";
     str += "<option value='鹽埕區'>鹽埕區</option>";
     str += "<option value='旗津區'>旗津區</option>";
   }
   else if (city.value == "高雄縣")
   {
      str += "<option value='鳳山市'>鳳山市</option>";
      str += "<option value='大寮鄉'>大寮鄉</option>";
      str += "<option value='岡山鎮'>岡山鎮</option>";
      str += "<option value='林園鄉'>林園鄉</option>";
      str += "<option value='仁武鄉'>仁武鄉</option>";
      str += "<option value='路竹鄉'>路竹鄉</option>";
      str += "<option value='大樹鄉'>大樹鄉</option>";
      str += "<option value='美濃鎮'>美濃鎮</option>";
      str += "<option value='旗山鎮'>旗山鎮</option>";
      str += "<option value='梓官鄉'>梓官鄉</option>";
      str += "<option value='鳥松鄉'>鳥松鄉</option>";
      str += "<option value='橋頭鄉'>橋頭鄉</option>";
      str += "<option value='大社鄉'>大社鄉</option>";
      str += "<option value='茄萣鄉'>茄萣鄉</option>";
      str += "<option value='燕巢鄉'>燕巢鄉</option>";
      str += "<option value='阿蓮鄉'>阿蓮鄉</option>";
      str += "<option value='湖內鄉'>湖內鄉</option>";
      str += "<option value='彌陀鄉'>彌陀鄉</option>";
      str += "<option value='內門鄉'>內門鄉</option>";
      str += "<option value='六龜鄉'>六龜鄉</option>";
      str += "<option value='永安鄉'>永安鄉</option>";
      str += "<option value='杉林鄉'>杉林鄉</option>";
      str += "<option value='田寮鄉'>田寮鄉</option>";
      str += "<option value='甲仙鄉'>甲仙鄉</option>";
      str += "<option value='桃源鄉'>桃源鄉</option>";
      str += "<option value='三民鄉'>三民鄉</option>";
      str += "<option value='茂林鄉'>茂林鄉</option>";
   }
   else if (city.value == "台北縣")
   {
      str += "<option value='板橋市'>板橋市</option>";
      str += "<option value='中和市'>中和市</option>";
      str += "<option value='三重市'>三重市</option>";
      str += "<option value='新莊市'>新莊市</option>";
      str += "<option value='新店市'>新店市</option>";
      str += "<option value='土城市'>土城市</option>";
      str += "<option value='永和市'>永和市</option>";
      str += "<option value='蘆洲市'>蘆洲市</option>";
      str += "<option value='汐止市'>汐止市</option>";
      str += "<option value='樹林市'>樹林市</option>";
      str += "<option value='淡水鎮'>淡水鎮</option>";
      str += "<option value='三峽鎮'>三峽鎮</option>";
      str += "<option value='鶯歌鎮'>鶯歌鎮</option>";
      str += "<option value='五股鄉'>五股鄉</option>";
      str += "<option value='泰山鄉'>泰山鄉</option>";
      str += "<option value='林口鄉'>林口鄉</option>";
      str += "<option value='瑞芳鎮'>瑞芳鎮</option>";
      str += "<option value='八里鄉'>八里鄉</option>";
      str += "<option value='三芝鄉'>三芝鄉</option>";
      str += "<option value='金山鄉'>金山鄉</option>";
      str += "<option value='深坑鄉'>深坑鄉</option>";
      str += "<option value='萬里鄉'>萬里鄉</option>";
      str += "<option value='貢寮鄉'>貢寮鄉</option>";
      str += "<option value='石門鄉'>石門鄉</option>";
      str += "<option value='雙溪鄉'>雙溪鄉</option>";
      str += "<option value='石碇鄉'>石碇鄉</option>";
      str += "<option value='平溪鄉'>平溪鄉</option>";
      str += "<option value='坪林鄉'>坪林鄉</option>";
      str += "<option value='烏來鄉'>烏來鄉</option>";
   }
   else if (city.value == "桃園縣")
   {
      str += "<option value='桃園市'>桃園市</option>";
      str += "<option value='中壢市'>中壢市</option>";
      str += "<option value='平鎮市'>平鎮市</option>";
      str += "<option value='八德市'>八德市</option>";
      str += "<option value='楊梅鎮'>楊梅鎮</option>";
      str += "<option value='龜山鄉'>龜山鄉</option>";
      str += "<option value='龍潭鄉'>龍潭鄉</option>";
      str += "<option value='蘆竹鄉'>蘆竹鄉</option>";
      str += "<option value='大溪鎮'>大溪鎮</option>";
      str += "<option value='大園鄉'>大園鄉</option>";
      str += "<option value='觀音鄉'>觀音鄉</option>";
      str += "<option value='新屋鄉'>新屋鄉</option>";
      str += "<option value='復興鄉'>復興鄉</option>";
   }
   else if (city.value == "新竹縣")
   {
      str += "<option value='竹北市'>竹北市</option>";
      str += "<option value='竹東鎮'>竹東鎮</option>";
      str += "<option value='湖口鄉'>湖口鄉</option>";
      str += "<option value='新豐鄉'>新豐鄉</option>";
      str += "<option value='新埔鎮'>新埔鎮</option>";
      str += "<option value='關西鎮'>關西鎮</option>";
      str += "<option value='芎林鄉'>芎林鄉</option>";
      str += "<option value='橫山鄉'>橫山鄉</option>";
      str += "<option value='寶山鄉'>寶山鄉</option>";
      str += "<option value='北埔鄉'>北埔鄉</option>";
      str += "<option value='尖石鄉'>尖石鄉</option>";
      str += "<option value='峨眉鄉'>峨眉鄉</option>";
      str += "<option value='五峰鄉'>五峰鄉</option>";
   }
   else if (city.value == "苗栗縣")
   {
      str += "<option value='苗栗市'>苗栗市</option>";
      str += "<option value='頭份鎮'>頭份鎮</option>";
      str += "<option value='竹南鎮'>竹南鎮</option>";
      str += "<option value='苑裡鎮'>苑裡鎮</option>";
      str += "<option value='後龍鎮'>後龍鎮</option>";
      str += "<option value='通霄鎮'>通霄鎮</option>";
      str += "<option value='公館鄉'>公館鄉</option>";
      str += "<option value='銅鑼鄉'>銅鑼鄉</option>";
      str += "<option value='卓蘭鎮'>卓蘭鎮</option>";
      str += "<option value='三義鄉'>三義鄉</option>";
      str += "<option value='大湖鄉'>大湖鄉</option>";
      str += "<option value='造橋鄉'>造橋鄉</option>";
      str += "<option value='頭屋鄉'>頭屋鄉</option>";
      str += "<option value='南庄鄉'>南庄鄉</option>";
      str += "<option value='西湖鄉'>西湖鄉</option>";
      str += "<option value='三灣鄉'>三灣鄉</option>";
      str += "<option value='泰安鄉'>泰安鄉</option>";
      str += "<option value='獅潭鄉'>獅潭鄉</option>";
   }
   else if (city.value == "台中縣")
   {
      str += "<option value='大里市'>大里市</option>";
      str += "<option value='太平市'>太平市</option>";
      str += "<option value='豐原市'>豐原市</option>";
      str += "<option value='潭子鄉'>潭子鄉</option>";
      str += "<option value='清水鎮'>清水鎮</option>";
      str += "<option value='大雅鄉'>大雅鄉</option>";
      str += "<option value='大甲鎮'>大甲鎮</option>";
      str += "<option value='沙鹿鎮'>沙鹿鎮</option>";
      str += "<option value='龍井鄉'>龍井鄉</option>";
      str += "<option value='霧峰鄉'>霧峰鄉</option>";
      str += "<option value='烏日鄉'>烏日鄉</option>";
      str += "<option value='神岡鄉'>神岡鄉</option>";
      str += "<option value='東勢鎮'>東勢鎮</option>";
      str += "<option value='后里鄉'>后里鄉</option>";
      str += "<option value='大肚鄉'>大肚鄉</option>";
      str += "<option value='梧棲鎮'>梧棲鎮</option>";
      str += "<option value='外埔鄉'>外埔鄉</option>";
      str += "<option value='新社鄉'>新社鄉</option>";
      str += "<option value='大安鄉'>大安鄉</option>";
      str += "<option value='石岡鄉'>石岡鄉</option>";
      str += "<option value='和平鄉'>和平鄉</option>";
   }
   else if (city.value == "彰化縣")
   {
      str += "<option value='彰化市'>彰化市</option>";
      str += "<option value='員林鎮'>員林鎮</option>";
      str += "<option value='和美鎮'>和美鎮</option>";
      str += "<option value='鹿港鎮'>鹿港鎮</option>";
      str += "<option value='二林鎮'>二林鎮</option>";
      str += "<option value='溪湖鎮'>溪湖鎮</option>";
      str += "<option value='福興鄉'>福興鄉</option>";
      str += "<option value='田中鎮'>田中鎮</option>";
      str += "<option value='花壇鄉'>花壇鄉</option>";
      str += "<option value='社頭鄉'>社頭鄉</option>";
      str += "<option value='永靖鄉'>永靖鄉</option>";
      str += "<option value='芳苑鄉'>芳苑鄉</option>";
      str += "<option value='秀水鄉'>秀水鄉</option>";
      str += "<option value='大村鄉'>大村鄉</option>";
      str += "<option value='埔鹽鄉'>埔鹽鄉</option>";
      str += "<option value='埔心鄉'>埔心鄉</option>";
      str += "<option value='伸港鄉'>伸港鄉</option>";
      str += "<option value='北斗鎮'>北斗鎮</option>";
      str += "<option value='溪州鄉'>溪州鄉</option>";
      str += "<option value='埤頭鄉'>埤頭鄉</option>";
      str += "<option value='田尾鄉'>田尾鄉</option>";
      str += "<option value='芬園鄉'>芬園鄉</option>";
      str += "<option value='大城鄉'>大城鄉</option>";
      str += "<option value='二水鄉'>二水鄉</option>";
      str += "<option value='竹塘鄉'>竹塘鄉</option>";
      str += "<option value='線西鄉'>線西鄉</option>";
   }
   else if (city.value == "南投縣")
   {
      str += "<option value='南投市'>南投市</option>";
      str += "<option value='草屯鎮'>草屯鎮</option>";
      str += "<option value='埔里鎮'>埔里鎮</option>";
      str += "<option value='竹山鎮'>竹山鎮</option>";
      str += "<option value='名間鄉'>名間鄉</option>";
      str += "<option value='國姓鄉'>國姓鄉</option>";
      str += "<option value='水里鄉'>水里鄉</option>";
      str += "<option value='鹿谷鄉'>鹿谷鄉</option>";
      str += "<option value='魚池鄉'>魚池鄉</option>";
      str += "<option value='信義鄉'>信義鄉</option>";
      str += "<option value='中寮鄉'>中寮鄉</option>";
      str += "<option value='仁愛鄉'>仁愛鄉</option>";
      str += "<option value='集集鎮'>集集鎮</option>";
   }
   else if (city.value == "雲林縣")
   {
      str += "<option value='斗六市'>斗六市</option>";
      str += "<option value='虎尾鎮'>虎尾鎮</option>";
      str += "<option value='西螺鎮'>西螺鎮</option>";
      str += "<option value='斗南鎮'>斗南鎮</option>";
      str += "<option value='北港鎮'>北港鎮</option>";
      str += "<option value='古坑鄉'>古坑鄉</option>";
      str += "<option value='口湖鄉'>口湖鄉</option>";
      str += "<option value='麥寮鄉'>麥寮鄉</option>";
      str += "<option value='水林鄉'>水林鄉</option>";
      str += "<option value='二崙鄉'>二崙鄉</option>";
      str += "<option value='土庫鎮'>土庫鎮</option>";
      str += "<option value='元長鄉'>元長鄉</option>";
      str += "<option value='莿桐鄉'>莿桐鄉</option>";
      str += "<option value='四湖鄉'>四湖鄉</option>";
      str += "<option value='崙背鄉'>崙背鄉</option>";
      str += "<option value='台西鄉'>台西鄉</option>";
      str += "<option value='大埤鄉'>大埤鄉</option>";
      str += "<option value='林內鄉'>林內鄉</option>";
      str += "<option value='東勢鄉'>東勢鄉</option>";
      str += "<option value='褒忠鄉'>褒忠鄉</option>";
   }
   else if (city.value == "嘉義縣")
   {
      str += "<option value='民雄鄉'>民雄鄉</option>";
      str += "<option value='水上鄉'>水上鄉</option>";
      str += "<option value='中埔鄉'>中埔鄉</option>";
      str += "<option value='朴子市'>朴子市</option>";
      str += "<option value='竹崎鄉'>竹崎鄉</option>";
      str += "<option value='大林鎮'>大林鎮</option>";
      str += "<option value='新港鄉'>新港鄉</option>";
      str += "<option value='布袋鎮'>布袋鎮</option>";
      str += "<option value='太保市'>太保市</option>";
      str += "<option value='東石鄉'>東石鄉</option>";
      str += "<option value='六腳鄉'>六腳鄉</option>";
      str += "<option value='義竹鄉'>義竹鄉</option>";
      str += "<option value='梅山鄉'>梅山鄉</option>";
      str += "<option value='鹿草鄉'>鹿草鄉</option>";
      str += "<option value='溪口鄉'>溪口鄉</option>";
      str += "<option value='番路鄉'>番路鄉</option>";
      str += "<option value='阿里山'>阿里山</option>";
      str += "<option value='大埔鄉'>大埔鄉</option>";
   }
   else if (city.value == "台南縣")
   {
      str += "<option value='永康市'>永康市</option>";
      str += "<option value='新營市'>新營市</option>";
      str += "<option value='仁德鄉'>仁德鄉</option>";
      str += "<option value='歸仁鄉'>歸仁鄉</option>";
      str += "<option value='佳里鎮'>佳里鎮</option>";
      str += "<option value='麻豆鎮'>麻豆鎮</option>";
      str += "<option value='新化鎮'>新化鎮</option>";
      str += "<option value='善化鎮'>善化鎮</option>";
      str += "<option value='關廟鄉'>關廟鄉</option>";
      str += "<option value='白河鎮'>白河鎮</option>";
      str += "<option value='新市鄉'>新市鄉</option>";
      str += "<option value='學甲鎮'>學甲鎮</option>";
      str += "<option value='安定鄉'>安定鄉</option>";
      str += "<option value='鹽水鎮'>鹽水鎮</option>";
      str += "<option value='後壁鄉'>後壁鄉</option>";
      str += "<option value='下營鄉'>下營鄉</option>";
      str += "<option value='西港鄉'>西港鄉</option>";
      str += "<option value='七股鄉'>七股鄉</option>";
      str += "<option value='六甲鄉'>六甲鄉</option>";
      str += "<option value='東山鄉'>東山鄉</option>";
      str += "<option value='柳營鄉'>柳營鄉</option>";
      str += "<option value='官田鄉'>官田鄉</option>";
      str += "<option value='將軍鄉'>將軍鄉</option>";
      str += "<option value='玉井鄉'>玉井鄉</option>";
      str += "<option value='北門鄉'>北門鄉</option>";
      str += "<option value='大內鄉'>大內鄉</option>";
      str += "<option value='楠西鄉'>楠西鄉</option>";
      str += "<option value='南化鄉'>南化鄉</option>";
      str += "<option value='山上鄉'>山上鄉</option>";
      str += "<option value='左鎮鄉'>左鎮鄉</option>";
      str += "<option value='龍崎鄉'>龍崎鄉</option>";
   }
   else if (city.value == "屏東縣")
   {
      str += "<option value='屏東市'>屏東市</option>";
      str += "<option value='內埔鄉'>內埔鄉</option>";
      str += "<option value='潮州鎮'>潮州鎮</option>";
      str += "<option value='萬丹鄉'>萬丹鄉</option>";
      str += "<option value='東港鎮'>東港鎮</option>";
      str += "<option value='新園鄉'>新園鄉</option>";
      str += "<option value='恆春鎮'>恆春鎮</option>";
      str += "<option value='長治鄉'>長治鄉</option>";
      str += "<option value='枋寮鄉'>枋寮鄉</option>";
      str += "<option value='高樹鄉'>高樹鄉</option>";
      str += "<option value='鹽埔鄉'>鹽埔鄉</option>";
      str += "<option value='里港鄉'>里港鄉</option>";
      str += "<option value='萬巒鄉'>萬巒鄉</option>";
      str += "<option value='九如鄉'>九如鄉</option>";
      str += "<option value='佳冬鄉'>佳冬鄉</option>";
      str += "<option value='林邊鄉'>林邊鄉</option>";
      str += "<option value='竹田鄉'>竹田鄉</option>";
      str += "<option value='崁頂鄉'>崁頂鄉</option>";
      str += "<option value='琉球鄉'>琉球鄉</option>";
      str += "<option value='南州鄉'>南州鄉</option>";
      str += "<option value='麟洛鄉'>麟洛鄉</option>";
      str += "<option value='新埤鄉'>新埤鄉</option>";
      str += "<option value='車城鄉'>車城鄉</option>";
      str += "<option value='滿洲鄉'>滿洲鄉</option>";
      str += "<option value='來義鄉'>來義鄉</option>";
      str += "<option value='三地門'>三地門</option>";
      str += "<option value='枋山鄉'>枋山鄉</option>";
      str += "<option value='瑪家鄉'>瑪家鄉</option>";
      str += "<option value='春日鄉'>春日鄉</option>";
      str += "<option value='牡丹鄉'>牡丹鄉</option>";
      str += "<option value='獅子鄉'>獅子鄉</option>";
      str += "<option value='泰武鄉'>泰武鄉</option>";
      str += "<option value='霧台鄉'>霧台鄉</option>";
   }
   else if (city.value == "台東縣")
   {
      str += "<option value='台東市'>台東市</option>";
      str += "<option value='卑南鄉'>卑南鄉</option>";
      str += "<option value='成功鎮'>成功鎮</option>";
      str += "<option value='太麻里'>太麻里</option>";
      str += "<option value='東河鄉'>東河鄉</option>";
      str += "<option value='關山鎮'>關山鎮</option>";
      str += "<option value='池上鄉'>池上鄉</option>";
      str += "<option value='長濱鄉'>長濱鄉</option>";
      str += "<option value='鹿野鄉'>鹿野鄉</option>";
      str += "<option value='大武鄉'>大武鄉</option>";
      str += "<option value='海端鄉'>海端鄉</option>";
      str += "<option value='達仁鄉'>達仁鄉</option>";
      str += "<option value='延平鄉'>延平鄉</option>";
      str += "<option value='綠島鄉'>綠島鄉</option>";
      str += "<option value='金峰鄉'>金峰鄉</option>";
      str += "<option value='蘭嶼鄉'>蘭嶼鄉</option>";
   }
   else if (city.value == "花蓮縣")
   {
      str += "<option value='花蓮市'>花蓮市</option>";
      str += "<option value='吉安鄉'>吉安鄉</option>";
      str += "<option value='玉里鎮'>玉里鎮</option>";
      str += "<option value='新城鄉'>新城鄉</option>";
      str += "<option value='壽豐鄉'>壽豐鄉</option>";
      str += "<option value='光復鄉'>光復鄉</option>";
      str += "<option value='秀林鄉'>秀林鄉</option>";
      str += "<option value='瑞穗鄉'>瑞穗鄉</option>";
      str += "<option value='鳳林鎮'>鳳林鎮</option>";
      str += "<option value='富里鄉'>富里鄉</option>";
      str += "<option value='萬榮鄉'>萬榮鄉</option>";
      str += "<option value='卓溪鄉'>卓溪鄉</option>";
      str += "<option value='豐濱鄉'>豐濱鄉</option>";
   }
   else if (city.value == "宜蘭縣")
   {
      str += "<option value='宜蘭市'>宜蘭市</option>";
      str += "<option value='羅東鎮'>羅東鎮</option>";
      str += "<option value='冬山鄉'>冬山鄉</option>";
      str += "<option value='蘇澳鎮'>蘇澳鎮</option>";
      str += "<option value='五結鄉'>五結鄉</option>";
      str += "<option value='礁溪鄉'>礁溪鄉</option>";
      str += "<option value='員山鄉'>員山鄉</option>";
      str += "<option value='頭城鎮'>頭城鎮</option>";
      str += "<option value='壯圍鄉'>壯圍鄉</option>";
      str += "<option value='三星鄉'>三星鄉</option>";
      str += "<option value='南澳鄉'>南澳鄉</option>";
      str += "<option value='大同鄉'>大同鄉</option>";
   }
   else if (city.value == "金門縣")
   {
      str += "<option value='金城鎮'>金城鎮</option>";
      str += "<option value='金湖鎮'>金湖鎮</option>";
      str += "<option value='金寧鄉'>金寧鄉</option>";
      str += "<option value='金沙鎮'>金沙鎮</option>";
      str += "<option value='烈嶼鄉'>烈嶼鄉</option>";
      str += "<option value='烏坵鄉'>烏坵鄉</option>";
   }
   else if (city.value == "連江縣")
   {
      str += "<option value='南竿鄉'>南竿鄉</option>";
      str += "<option value='北竿鄉'>北竿鄉</option>";
      str += "<option value='莒光鄉'>莒光鄉</option>";
      str += "<option value='東引鄉'>東引鄉</option>";
   }
   else if (city.value == "澎湖縣")
   {
      str += "<option value='馬公市'>馬公市</option>";
      str += "<option value='湖西鄉'>湖西鄉</option>";
      str += "<option value='白沙鄉'>白沙鄉</option>";
      str += "<option value='西嶼鄉'>西嶼鄉</option>";
      str += "<option value='望安鄉'>望安鄉</option>";
      str += "<option value='七美鄉'>七美鄉</option>";
   }

   str += "</select>";
   //alert("str: " + str);
   town.outerHTML= str;
}