JavaScript无限级Select下拉列表联动

var arrSelectName = new Array(document.getElementById("drpProvince"),document.getElementById("drpCity"));
		                var arrList = new Array([999999,0,'--请选择--',''],[999998,999999,'--请选择--',''],[1,0,'安徽','1'],[36,1,'安庆','36'],[37,1,'蚌埠','37'],[38,1,'亳州','38'],[39,1,'巢湖','39'],[40,1,'滁州','40'],[41,1,'阜阳','41'],[42,1,'贵池','42'],[35,1,'合肥','35'],[43,1,'淮北','43'],[44,1,'淮化','44'],[45,1,'淮南','45'],[46,1,'黄山','46'],[47,1,'九华山','47'],[48,1,'六安','48'],[49,1,'马鞍山','49'],[50,1,'宿州','50'],[51,1,'铜陵','51'],[52,1,'屯溪','52'],[53,1,'芜湖','53'],[54,1,'宣城','54'],[20,0,'澳门','20'],[281,20,'澳门','281'],[2,0,'北京','2'],[55,2,'北京','55'],[4,0,'福建','4'],[58,4,'福安','58'],[57,4,'福州','57'],[59,4,'龙岩','59'],[60,4,'南平','60'],[61,4,'宁德','61'],[62,4,'莆田','62'],[63,4,'泉州','63'],[64,4,'三明','64'],[65,4,'邵武','65'],[66,4,'石狮','66'],[68,4,'武夷山','68'],[69,4,'厦门','69'],[67,4,'永安','67'],[70,4,'漳州','70'],[5,0,'甘肃','5'],[72,5,'白银','72'],[73,5,'定西','73'],[74,5,'敦煌','74'],[75,5,'甘南','75'],[76,5,'金昌','76'],[77,5,'酒泉','77'],[71,5,'兰州','71'],[78,5,'临夏','78'],[79,5,'平凉','79'],[80,5,'天水','80'],[81,5,'武都','81'],[82,5,'西峰','82'],[83,5,'张掖','83'],[6,0,'广东','6'],[85,6,'潮阳','85'],[86,6,'潮州','86'],[87,6,'澄海','87'],[88,6,'东莞','88'],[89,6,'佛山','89'],[84,6,'广州','84'],[90,6,'河源','90'],[91,6,'惠州','91'],[92,6,'江门','92'],[93,6,'揭阳','93'],[94,6,'开平','94'],[95,6,'茂名','95'],[96,6,'梅州','96'],[97,6,'清远','97'],[98,6,'汕头','98'],[99,6,'汕尾','99'],[100,6,'韶关','100'],[101,6,'深圳','101'],[102,6,'顺德','102'],[103,6,'阳江','103'],[104,6,'英德','104'],[105,6,'云浮','105'],[106,6,'增城','106'],[107,6,'湛江','107'],[108,6,'肇庆','108'],[109,6,'中山','109'],[110,6,'珠海','110'],[7,0,'广西','7'],[112,7,'百色','112'],[113,7,'北海','113'],[115,7,'防城港','115'],[114,7,'桂林','114'],[116,7,'河池','116'],[117,7,'柳州','117'],[111,7,'南宁','111'],[118,7,'钦州','118'],[119,7,'梧州','119'],[120,7,'玉林','120'],[8,0,'贵州','8'],[122,8,'安顺','122'],[123,8,'毕节','123'],[124,8,'都匀','124'],[121,8,'贵阳','121'],[125,8,'凯里','125'],[126,8,'六盘水','126'],[127,8,'铜仁','127'],[128,8,'兴义','128'],[129,8,'玉屏','129'],[130,8,'遵义','130'],[9,0,'海南','9'],[132,9,'儋县','132'],[131,9,'海口','131'],[133,9,'陵水','133'],[134,9,'琼海','134'],[135,9,'三亚','135'],[136,9,'通什','136'],[137,9,'万宁','137'],[10,0,'河北','10'],[139,10,'保定','139'],[140,10,'北戴河','140'],[141,10,'沧州','141'],[142,10,'承德','142'],[143,10,'丰润','143'],[144,10,'邯郸','144'],[145,10,'衡水','145'],[146,10,'廊坊','146'],[147,10,'南戴河','147'],[148,10,'秦皇岛','148'],[138,10,'石家庄','138'],[149,10,'唐山','149'],[150,10,'新城','150'],[151,10,'邢台','151'],[152,10,'张家口','152'],[12,0,'河南','12'],[168,12,'安阳','168'],[169,12,'鹤壁','169'],[170,12,'潢川','170'],[171,12,'焦作','171'],[172,12,'开封','172'],[174,12,'洛阳','174'],[173,12,'漯河','173'],[175,12,'南阳','175'],[176,12,'平顶山','176'],[177,12,'濮阳','177'],[178,12,'三门峡','178'],[179,12,'商丘','179'],[180,12,'新乡','180'],[181,12,'信阳','181'],[182,12,'许昌','182'],[167,12,'郑州','167'],[183,12,'周口','183'],[184,12,'驻马店','184'],[11,0,'黑龙江','11'],[154,11,'北安','154'],[155,11,'大庆','155'],[156,11,'大兴安岭','156'],[153,11,'哈尔滨','153'],[157,11,'鹤岗','157'],[158,11,'黑河','158'],[160,11,'鸡西','160'],[159,11,'佳木斯','159'],[161,11,'牡丹江','161'],[163,11,'七台河','163'],[162,11,'齐齐哈尔','162'],[164,11,'双鸭山','164'],[165,11,'绥化','165'],[166,11,'伊春','166'],[14,0,'湖北','14'],[189,14,'鄂州','189'],[188,14,'恩施','188'],[190,14,'黄岗','190'],[191,14,'黄石','191'],[192,14,'荆门','192'],[193,14,'荆州','193'],[194,14,'潜江','194'],[195,14,'十堰','195'],[196,14,'随州','196'],[187,14,'武汉','187'],[197,14,'武穴','197'],[198,14,'仙桃','198'],[199,14,'咸宁','199'],[201,14,'襄樊','201'],[200,14,'襄阳','200'],[202,14,'孝感','202'],[203,14,'宜昌','203'],[15,0,'湖南','15'],[204,15,'长沙','204'],[205,15,'常德','205'],[206,15,'郴州','206'],[207,15,'衡阳','207'],[208,15,'怀化','208'],[209,15,'吉首','209'],[210,15,'娄底','210'],[211,15,'邵阳','211'],[212,15,'湘潭','212'],[213,15,'益阳','213'],[215,15,'永州','215'],[214,15,'岳阳','214'],[216,15,'张家界','216'],[217,15,'株洲','217'],[18,0,'吉林','18'],[257,18,'白城','257'],[258,18,'白山','258'],[256,18,'长春','256'],[259,18,'珲春','259'],[262,18,'吉林','262'],[260,18,'辽源','260'],[261,18,'梅河','261'],[263,18,'四平','263'],[264,18,'松原','264'],[265,18,'通化','265'],[266,18,'延吉','266'],[16,0,'江苏','16'],[219,16,'常熟','219'],[220,16,'常州','220'],[221,16,'海门','221'],[222,16,'淮安','222'],[223,16,'江都','223'],[224,16,'江阴','224'],[225,16,'昆山','225'],[226,16,'连云港','226'],[218,16,'南京','218'],[227,16,'南通','227'],[228,16,'启东','228'],[229,16,'沭阳','229'],[230,16,'苏州','230'],[231,16,'太仓','231'],[232,16,'泰州','232'],[233,16,'同里','233'],[234,16,'无锡','234'],[235,16,'徐州','235'],[236,16,'盐城','236'],[237,16,'扬州','237'],[239,16,'仪征','239'],[238,16,'宜兴','238'],[240,16,'张家港','240'],[241,16,'镇江','241'],[242,16,'周庄','242'],[17,0,'江西','17'],[244,17,'抚州','244'],[245,17,'赣州','245'],[246,17,'吉安','246'],[248,17,'井冈山','248'],[247,17,'景德镇','247'],[249,17,'九江','249'],[250,17,'庐山','250'],[243,17,'南昌','243'],[251,17,'萍乡','251'],[252,17,'上饶','252'],[253,17,'新余','253'],[254,17,'宜春','254'],[255,17,'鹰潭','255'],[19,0,'辽宁','19'],[268,19,'鞍山','268'],[269,19,'本溪','269'],[270,19,'朝阳','270'],[271,19,'大连','271'],[272,19,'丹东','272'],[273,19,'抚顺','273'],[274,19,'阜新','274'],[275,19,'葫芦岛','275'],[276,19,'锦州','276'],[277,19,'辽阳','277'],[278,19,'盘锦','278'],[267,19,'沈阳','267'],[279,19,'铁岭','279'],[280,19,'营口','280'],[21,0,'内蒙古','21'],[283,21,'阿拉善盟','283'],[284,21,'包头','284'],[285,21,'赤峰','285'],[286,21,'东胜','286'],[287,21,'海拉尔','287'],[282,21,'呼和浩特','282'],[288,21,'集宁','288'],[289,21,'临河','289'],[290,21,'通辽','290'],[291,21,'乌海','291'],[292,21,'乌兰浩特','292'],[293,21,'锡林浩特','293'],[22,0,'宁夏','22'],[295,22,'固源','295'],[296,22,'石嘴山','296'],[297,22,'吴忠','297'],[294,22,'银川','294'],[23,0,'青海','23'],[299,23,'德令哈','299'],[300,23,'格尔木','300'],[301,23,'共和','301'],[302,23,'海东','302'],[303,23,'海晏','303'],[304,23,'玛沁','304'],[305,23,'同仁','305'],[298,23,'西宁','298'],[306,23,'玉树','306'],[24,0,'山东','24'],[308,24,'滨州','308'],[310,24,'德州','310'],[311,24,'东营','311'],[312,24,'荷泽','312'],[307,24,'济南','307'],[313,24,'济宁','313'],[314,24,'莱芜','314'],[315,24,'聊城','315'],[316,24,'临沂','316'],[317,24,'蓬莱','317'],[318,24,'青岛','318'],[319,24,'曲阜','319'],[320,24,'日照','320'],[321,24,'泰安','321'],[323,24,'威海','323'],[322,24,'潍坊','322'],[324,24,'烟台','324'],[309,24,'兖州','309'],[325,24,'枣庄','325'],[326,24,'淄博','326'],[26,0,'山西','26'],[331,26,'长治','331'],[332,26,'大同','332'],[333,26,'候马','333'],[334,26,'晋城','334'],[335,26,'离石','335'],[336,26,'临汾','336'],[337,26,'宁武','337'],[338,26,'朔州','338'],[330,26,'太原','330'],[339,26,'忻州','339'],[340,26,'阳泉','340'],[341,26,'榆次','341'],[342,26,'运城','342'],[27,0,'陕西','27'],[344,27,'安康','344'],[345,27,'宝鸡','345'],[346,27,'汉中','346'],[348,27,'商州','348'],[349,27,'绥德','349'],[350,27,'铜川','350'],[347,27,'渭南','347'],[343,27,'西安','343'],[351,27,'咸阳','351'],[352,27,'延安','352'],[353,27,'榆林','353'],[25,0,'上海','25'],[328,25,'崇明','328'],[327,25,'上海','327'],[329,25,'朱家角','329'],[28,0,'四川','28'],[355,28,'巴中','355'],[354,28,'成都','354'],[356,28,'达安','356'],[357,28,'德阳','357'],[358,28,'都江堰','358'],[359,28,'峨眉山','359'],[360,28,'涪陵','360'],[361,28,'广安','361'],[362,28,'广元','362'],[363,28,'九寨沟','363'],[364,28,'康定','364'],[365,28,'乐山','365'],[366,28,'泸州','366'],[367,28,'马尔康','367'],[368,28,'绵阳','368'],[370,28,'内江','370'],[369,28,'南充','369'],[371,28,'攀枝花','371'],[372,28,'遂宁','372'],[373,28,'汶川','373'],[374,28,'西昌','374'],[375,28,'雅安','375'],[376,28,'宜宾','376'],[377,28,'自贡','377'],[29,0,'台湾','29'],[379,29,'基隆','379'],[378,29,'台北','378'],[380,29,'台南','380'],[381,29,'台中','381'],[30,0,'天津','30'],[382,30,'天津','382'],[32,0,'西藏','32'],[402,32,'阿里','402'],[403,32,'昌都','403'],[401,32,'拉萨','401'],[404,32,'林芝','404'],[405,32,'那曲','405'],[406,32,'日喀则','406'],[407,32,'山南','407'],[13,0,'香港','13'],[186,13,'九龙','186'],[185,13,'香港','185'],[31,0,'新疆','31'],[384,31,'阿克苏','384'],[385,31,'阿勒泰','385'],[386,31,'阿图什','386'],[387,31,'博乐','387'],[388,31,'昌吉','388'],[389,31,'东山','389'],[390,31,'哈密','390'],[391,31,'和田','391'],[392,31,'喀什','392'],[393,31,'克拉玛依','393'],[394,31,'库车','394'],[395,31,'库尔勒','395'],[396,31,'奎屯','396'],[397,31,'石河子','397'],[398,31,'塔城','398'],[399,31,'吐鲁番','399'],[383,31,'乌鲁木齐','383'],[400,31,'伊宁','400'],[33,0,'云南','33'],[410,33,'保山','410'],[411,33,'楚雄','411'],[409,33,'大理','409'],[412,33,'大理','412'],[413,33,'东川','413'],[414,33,'个旧','414'],[415,33,'景洪','415'],[416,33,'开远','416'],[408,33,'昆明','408'],[418,33,'丽江','418'],[417,33,'临沧','417'],[419,33,'六库','419'],[420,33,'潞西','420'],[421,33,'曲靖','421'],[422,33,'思茅','422'],[423,33,'文山','423'],[424,33,'西双版纳','424'],[425,33,'玉溪','425'],[427,33,'昭通','427'],[426,33,'中甸','426'],[34,0,'浙江','34'],[429,34,'安吉','429'],[430,34,'慈溪','430'],[431,34,'定海','431'],[432,34,'奉化','432'],[433,34,'海盐','433'],[428,34,'杭州','428'],[435,34,'湖州','435'],[434,34,'黄岩','434'],[436,34,'嘉兴','436'],[437,34,'金华','437'],[440,34,'丽水','440'],[438,34,'临安','438'],[439,34,'临海','439'],[441,34,'宁波','441'],[442,34,'瓯海','442'],[443,34,'平湖','443'],[444,34,'千岛湖','444'],[445,34,'衢州','445'],[446,34,'瑞安','446'],[447,34,'绍兴','447'],[448,34,'嵊州','448'],[449,34,'台州','449'],[450,34,'温岭','450'],[451,34,'温州','451'],[3,0,'重庆','3'],[56,3,'重庆','56'],[]);
		                var arrDefault = new Array();
		                arrDefault[0] = 'ProvinceID';//初始化默认值
		                arrDefault[1] = 'CityID';
		                
		                //无限级分类select函数相关
                        (function (strInitID, arrSelect, arrMatrix, arrDefValue) {
                            function doChange(iIndex) {
                                var iCount = 0;
                                var sParentID = strInitID;
                                if (iIndex > 0) sParentID = arrSelect[iIndex - 1].options[arrSelect[iIndex - 1].selectedIndex].ID;
                                with (arrSelect[iIndex]) {
                                    length = 0;
                                    for (var i = 0; i < arrMatrix.length; i++) {
                                        if (String(arrMatrix[i][1]) == String(sParentID)) {
                                            var oNewOption = new Option(arrMatrix[i][2], arrMatrix[i][3], false, false);
                                            oNewOption.ID = arrMatrix[i][0];
                                            options[iCount++] = oNewOption;
					                        if(arrMatrix[i][3] == arrDefValue[iIndex])options[iCount - 1].selected = true;
                                        };
                                    };
                                    if (iCount == 0) {
                                        var oNull = new Option("--", null, false, true);
                                        oNull.ID = "_0x" + (new Date()).getTime();
                                        options[0] = oNull;
                                    };
                                    if (++iIndex < arrSelect.length) doChange(iIndex);
                                };
                            };
                            if (!arrDefValue) arrDefValue = [];
                            for (var i = 0; i < arrSelect.length - 1; i++) {
                                eval("arrSelect[" + i + "].onchange = function(){ doChange(" + (i + 1) + "); };");
                            }
                            doChange(0);
                            arrDefValue = [];
                        })(0,arrSelectName,arrList,arrDefault);//申明后调用