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<script>
var osheng=document.getElementByClassName("sheng");
var oshi=document.getElementByClassName("shi");
var oxian=document.getElementByClassName("xian");
var arr_sheng=["陕西省","云南省","四川省","山西省"];
var arr_shi=[
["西安市","咸阳市","宝鸡市","渭南市"],
["昆明市","大理市","丽江市","西双版纳市"],
["乐山市","成都市","大同市","高新市"],
["太原市","屏显市","乐宝市","李伟市"]
];
var arr_xian=[
[
["西安县1","西安县2"],["咸阳市1","咸阳市2"],["宝鸡市1","宝鸡市2"],["渭南市1","渭南市2"]
],
[
["昆明市1","昆明市2"],["大理市1","大理市2"],["丽江市1","丽江市2"],["西双版纳市1","西双版纳市2"]
],
[
["乐山市1","乐山市2"],["成都市1","成都市2"],["大同市1","大同市2"],["高新市1","高新市2"]
],
[
["太原市1","太原市2"],["屏显市1","屏显市2"],["乐宝市1","乐宝市2"],["李伟市1","李伟市2"]
]
];
var quanju_arr;//创建一个全局对象,用于存储一个中间数组
function input_arr(arr,event){//封装一个函数,用于向下拉栏中添加元素
for(var i=0;i |