/** 全國三級城市聯動 js版*/function Dsy(){ this.Items = {};}Dsy.prototype.add = function(id,iArray){ this.Items[id] = iArray;}Dsy.prototype.Exists = function(id){ if(typeof(this.Items[id]) == "undefined") return false; return true;}function change(v){ var str="0"; for(var i=0;i<v;i++){  str+=("_"+(document.getElementById(s[i]).selectedIndex-1)); }; var ss=document.getElementById(s[v]); with(ss){  length = 0;  options[0]=new Option(opt0[v],opt0[v]);  if(v && document.getElementById(s[v-1]).selectedIndex>0 || !v){   if(dsy.Exists(str)){    ar = dsy.Items[str];    for(var i=0;i<ar.length;i++){     options[length]=new Option(ar[i],ar[i]);    }//end for    if(v){ options[0].selected = true; }   }  }//end if v  if(++v<s.length){change(v);} }//End with}var dsy = new Dsy();dsy.add("0",["北京市","天津市","上海市","重慶市","河北省","山西省","內蒙古","遼寧省","吉林省","黑龍江省","江蘇省","浙江省","安徽省","福建省","江西省","山東省","河南省","湖北省","湖南省","廣東省","廣西","海南省","四川省","貴州省","云南省","西藏","陜西省","甘肅省","青海省","寧夏","新疆","香港","澳門","臺灣省"]);dsy.add("0_0_0",["東城區","西城區","崇文區","宣武區","朝陽區","豐臺區","石景山區","海淀區","門頭溝區","房山區","通州區","順義區","昌平區","大興區","懷柔區","平谷區","密云縣","延慶縣","延慶鎮"]);dsy.add("0_0",["北京市"]);dsy.add("0_1_0",["和平區","河東區","河西區","南開區","河北區","紅橋區","塘沽區","漢沽區","大港區","東麗區","西青區","津南區","北辰區","武清區","寶坻區","薊縣","寧河縣","蘆臺鎮","靜海縣","靜海鎮"]);dsy.add("0_1",["天津市"]);dsy.add("0_2_0",["黃浦區","盧灣區","徐匯區","長寧區","靜安區","普陀區","閘北區","虹口區","楊浦區","閔行區","寶山區

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