function area_(x1,x2,x3,x4){
	var area_x1=new Array("北京_东城|西城|崇文|宣武|朝阳|丰台|石景山|海淀|门头沟|房山|通州|顺义|昌平|大兴|平谷|怀柔|密云|延庆","上海_黄浦|卢湾|徐汇|长宁|静安|普陀|闸北|虹口|杨浦|闵行|宝山|嘉定|浦东|金山|松江|青浦|南汇|奉贤|崇明","天津_和平|东丽|河东|西青|河西|津南|南开|北辰|河北|武清|红挢|塘沽|汉沽|大港|宁河|静海|宝坻|蓟县","重庆_万州|涪陵|渝中|大渡口|江北|沙坪坝|九龙坡|南岸|北碚|万盛|双挢|渝北|巴南|黔江|长寿|綦江|潼南|铜梁|大足|荣昌|壁山|梁平|城口|丰都|垫江|武隆|忠县|开县|云阳|奉节|巫山|巫溪|石柱|秀山|酉阳|彭水|江津|合川|永川|南川","河北_石家庄|邯郸|邢台|保定|张家口|承德|廊坊|唐山|秦皇岛|沧州|衡水","山西_太原|大同|阳泉|长治|晋城|朔州|吕梁|忻州|晋中|临汾|运城","内蒙古_呼和浩特|包头|乌海|赤峰|呼伦贝尔盟|阿拉善盟|哲里木盟|兴安盟|乌兰察布盟|锡林郭勒盟|巴彦淖尔盟|伊克昭盟","辽宁_沈阳|大连|鞍山|抚顺|本溪|丹东|锦州|营口|阜新|辽阳|盘锦|铁岭|朝阳|葫芦岛","吉林_长春|吉林|四平|辽源|通化|白山|松原|白城|延边","黑龙江_哈尔滨|齐齐哈尔|牡丹江|佳木斯|大庆|绥化|鹤岗|鸡西|黑河|双鸭山|伊春|七台河|大兴安岭","江苏_南京|镇江|苏州|南通|扬州|盐城|徐州|连云港|常州|无锡|宿迁|泰州|淮安","浙江_杭州|宁波|温州|嘉兴|湖州|绍兴|金华|衢州|舟山|台州|丽水","安徽_合肥|芜湖|蚌埠|马鞍山|淮北|铜陵|安庆|黄山|滁州|宿州|池州|淮南|巢湖|阜阳|六安|宣城|亳州","福建_福州|厦门|莆田|三明|泉州|漳州|南平|龙岩|宁德","江西_南昌市|景德镇|九江|鹰潭|萍乡|新馀|赣州|吉安|宜春|抚州|上饶","山东_济南|青岛|淄博|枣庄|东营|烟台|潍坊|济宁|泰安|威海|日照|莱芜|临沂|德州|聊城|滨州|菏泽","河南_郑州|开封|洛阳|平顶山|安阳|鹤壁|新乡|焦作|濮阳|许昌|漯河|三门峡|南阳|商丘|信阳|周口|驻马店|济源","湖北_武汉|宜昌|荆州|襄樊|黄石|荆门|黄冈|十堰|恩施|潜江|天门|仙桃|随州|咸宁|孝感|鄂州","湖南_长沙|常德|株洲|湘潭|衡阳|岳阳|邵阳|益阳|娄底|怀化|郴州|永州|湘西|张家界","广东_广州|深圳|珠海|汕头|东莞|中山|佛山|韶关|江门|湛江|茂名|肇庆|惠州|梅州|汕尾|河源|阳江|清远|潮州|揭阳|云浮","广西_南宁|柳州|桂林|梧州|北海|防城港|钦州|贵港|玉林|南宁地区|柳州地区|贺州|百色|河池","海南_海口|三亚","四川_成都|绵阳|德阳|自贡|攀枝花|广元|内江|乐山|南充|宜宾|广安|达川|雅安|眉山|甘孜|凉山|泸州","贵州_贵阳|六盘水|遵义|安顺|铜仁|黔西南|毕节|黔东南|黔南","云南_昆明|大理|曲靖|玉溪|昭通|楚雄|红河|文山|思茅|西双版纳|保山|德宏|丽江|怒江|迪庆|临沧","西藏_拉萨|日喀则|山南|林芝|昌都|阿里|那曲","陕西_西安|宝鸡|咸阳|铜川|渭南|延安|榆林|汉中|安康|商洛","甘肃_兰州|嘉峪关|金昌|白银|天水|酒泉|张掖|武威|定西|陇南|平凉|庆阳|临夏|甘南","宁夏_银川|石嘴山|吴忠|固原","青海_西宁|海东|海南|海北|黄南|玉树|果洛|海西","新疆_乌鲁木齐|石河子|克拉玛依|伊犁|巴音郭勒|昌吉|克孜勒苏柯尔克孜|博尔塔拉|吐鲁番|哈密|喀什|和田|阿克苏","香港_香港","澳门_澳门","台湾_台北|高雄|台中|台南|屏东|南投|云林|新竹|彰化|苗栗|嘉义|花莲|桃园|宜兰|基隆|台东|金门|马祖|澎湖");
	for(area_x2=0;area_x2<area_x1.length;area_x2++){
		area_x3=area_x1[area_x2].split("_")[0];
		var area_x4=document.createElement("option");
		area_x4.text=area_x3;
		area_x4.value=area_x3;
		document.getElementById(x1).options.add(area_x4);
		if(area_x3==x3){
			area_x4.selected="true";
		}
	}
	for(area_x2=0;area_x2<area_x1.length;area_x2++){
		area_x3=area_x1[area_x2].split("_")[0];
		if(area_x3==document.getElementById(x1).value){
			break;
		}
	}
	area_x3=area_x1[area_x2].split("_")[1];
	area_x3=area_x3.split("|");
	for(area_x2=0;area_x2<area_x3.length;area_x2++){
		var area_x4=document.createElement("option");
		area_x4.text=area_x3[area_x2];
		area_x4.value=area_x3[area_x2];
		document.getElementById(x2).options.add(area_x4);
		if(area_x3[area_x2]==x4){
			area_x4.selected="true";
		}
	}
	document.getElementById(x1).onchange=function(){
		var area_x3=document.getElementById(x2).options.length;
		for(var area_x2=area_x3-1;area_x3>=0;area_x3--){
			document.getElementById(x2).options[area_x3]=null ;
		}
		for(area_x2=0;area_x2<area_x1.length;area_x2++){
			area_x3=area_x1[area_x2].split("_")[0];
			if(area_x3==document.getElementById(x1).value){
				break;
			}
		}
		area_x3=area_x1[area_x2].split("_")[1];
		area_x3=area_x3.split("|");
		for(area_x2=0;area_x2<area_x3.length;area_x2++){
			var area_x4=document.createElement("option");
			area_x4.text=area_x3[area_x2];
			area_x4.value=area_x3[area_x2];
			document.getElementById(x2).options.add(area_x4);
		}
	}
}
var content="";
content+="<select id='' name=''></select>";
content+="<select id='' name=''></select>";
document.write(content);
area_("","","","");