/*
*@author Leo Ning
*@date 2008-04-09
*/
( function($) {	
	$.cnCity = function(opts){
		$.cnCity.impl.init(null,opts);
	};
	$.cnCity.version=1.1;
	$.fn.cnCity = function(opts){
		$.cnCity.impl.init($(this),opts);
	};
	$.fn.jNumSelect=function(start,end,fn){
		var options='';
		start=start==null?0:start;
		end=end==null?20:end;
		for(var i=start;i<=end;i++){
			options+='<option value="'+i+'">'+i+'</option>';
		}		
		if(typeof(fn)=='string'){
			$(this).attr('onchange',fn+'(this)');
		}
		$(this).append(options);
	};
	$.cnCity.impl = {
		provinceSelects:null,//省列表框
		cities:null,//省与城市
		len:null,//省的个数
		inited:false,
		pc:0,//省计数
		cc:0,//城市计数
		init:function(provinceSelect,opts){
			opts=opts || {};
			if(!this.inited){//如果没有初始化,则初始化
				this.cities=new Array(35);
				this._initCities();
				this.len=this.cities.length;
				this.provinceSelects=new Array();
			}
			var provinceId;
			if(provinceSelect==null){
				provinceId=opts.provinceId==null?'#province':opts.provinceId;
				provinceSelect=$(this.provinceId);
			}else{
				provinceId='#'+provinceSelect.attr('id');
			}
			if(provinceSelect!=null){
				var cityId=opts.cityId==null?'#city':opts.cityId;
				var citySelect=$(cityId);
				if(citySelect!=null){
					citySelect.extend({id:cityId,xchange:typeof(opts.cityChange)=='function'?opts.cityChange:null});
					citySelect.change(this._cityChange);//当市列表框值改变时触发事件
				}
				this.provinceSelects[this.pc++]={id:provinceId,province:provinceSelect,
				xchange:typeof(opts.provinceChange)=='function'?opts.provinceChange:null,
				city:citySelect,defaultCity:opts.defaultCity};						
				provinceSelect.change(this._provinceChange);//当省列表框值改变时触发事件
				this._fillProvince(provinceSelect,opts.defaultProvince);
			}
		},
		_provinceChange:function(){
			var $this=$(this);
			var id='#'+$this.attr('id');
			var selects=$.cnCity.impl.provinceSelects;
			var len=selects.length;
			var select,xchange,citySelect,defaultCity;
			for(var i=0;i<len;i++){
				select=selects[i];
				if(select.id==id){
					xchange     = select.xchange;
					citySelect  = select.city;
					defaultCity = select.defaultCity;
					break;
				}
			}
			if(xchange!=null&&typeof(xchange)=='function'){
				xchange(select.province.val());
			}
			$.cnCity.impl._fillCity(select.province,citySelect,defaultCity);
		},
		_cityChange:function(){
			var $this=$(this);
			var id='#'+$this.attr('id');
			var selects=$.cnCity.impl.provinceSelects;
			var len=selects.length;
			var select;
			for(var i=0;i<len;i++){
				select=selects[i];
				if(select.city.id==id){
					xchange=select.city.xchange;					
					break;
				}
			}			
			if(xchange!=null&&typeof(xchange)=='function'){
				xchange(select.city.val());
			}
		},
		_fillProvince:function(province,defaultProvince){
			var len=this.len;
			var cities_options='';
			var city;
			var dprovince = 'undefined' == typeof defaultProvince ? '' : defaultProvince;
			province.children().remove();
			for(var i=0;i<len;i++){
				city=this.cities[i];
				if(dprovince != city[0]){
					cities_options+='<option value="'+city[0]+'">'+city[0]+'</option>';
				}else{
					cities_options+='<option value="'+city[0]+'" selected = "selected">'+city[0]+'</option>';					
				}
			}
			province.append(cities_options);
			if(dprovince != ''){
				province.change();				
			}			
		},
		_fillCity:function(province,city,defaultCity){
			var local=province.val();
			var len=this.len;
			city.children().remove();
			var cities_options='';
			var xcity,subCities;
			defaultCity = 'undefined' == typeof defaultCity ? '':defaultCity;
			for(var i=0;i<len;i++){
				xcity=$.cnCity.impl.cities[i];
				if(xcity[0] == local){
					subCities=(xcity[1]).split('|');
					len=subCities.length;
					for(var j=0;j<len;j++){
						if(defaultCity != subCities[j]){
							cities_options+='<option value="'+subCities[j]+'">'+subCities[j]+'</option>';
						}else{
							cities_options+='<option value="'+subCities[j]+'" selected="selected">'+subCities[j]+'</option>';
						}
					}
					city.append(cities_options);
					if(defaultCity != ''){
						city.change();
					}
					break;
				}
			}
		},
		_initCities:function(){
			this.inited=true;
			this.cities[0] = ["选择省份","选择城市"];
			this.cities[1] = ["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"];
			this.cities[2] = ["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"];
			this.cities[3] = ["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"];
			this.cities[4] = ["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"];
			this.cities[5] = ["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"];
			this.cities[6] = ["山西","|太原|大同|阳泉|长治|晋城|朔州|吕梁|忻州|晋中|临汾|运城"];
			this.cities[7] = ["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"];
			this.cities[8] = ["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"];
			this.cities[9] = ["吉林","|长春|吉林|四平|辽源|通化|白山|松原|白城|延边"];
			this.cities[10] = ["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"];
			this.cities[11] = ["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"];
			this.cities[12] = ["浙江","|杭州|宁波|温州|嘉兴|湖州|绍兴|金华|衢州|舟山|台州|丽水"];
			this.cities[13] = ["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"];
			this.cities[14] = ["福建","|福州|厦门|莆田|三明|泉州|漳州|南平|龙岩|宁德"];
			this.cities[15] = ["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"];
			this.cities[16] = ["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"];
			this.cities[17] = ["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"];
			this.cities[18] = ["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"];
			this.cities[19] = ["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"];
			this.cities[20] = ["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"];
			this.cities[21] = ["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"];
			this.cities[22] = ["海南","|海口|三亚"];
			this.cities[23] = ["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"];
			this.cities[24] = ["贵州","|贵阳|六盘水|遵义|安顺|铜仁|黔西南|毕节|黔东南|黔南"];
			this.cities[25] = ["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"];
			this.cities[26] = ["西藏","|拉萨|日喀则|山南|林芝|昌都|阿里|那曲"];
			this.cities[27] = ["陕西","|西安|宝鸡|咸阳|铜川|渭南|延安|榆林|汉中|安康|商洛"];
			this.cities[28] = ["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"];
			this.cities[29] = ["宁夏","|银川|石嘴山|吴忠|固原"];
			this.cities[30] = ["青海","|西宁|海东|海南|海北|黄南|玉树|果洛|海西"];
			this.cities[31] = ["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"];
			this.cities[32] = ["香港",""];
			this.cities[33] = ["澳门",""];
			this.cities[34] = ["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"];
			this.cities[35] = ["其它","|北美洲|南美洲|亚洲|非洲|欧洲|大洋洲"];
		}
	};
})(jQuery);