我是先要选择大类后，再选择小类。刚开始我在大类中把value的值设置成0,1,2,3,4……这样设置后可以选择小类，但是在数据库里取不到真正的值，只是取到数字１，２，３，４等，后来我改成了以下的代码，就是把value的值改了一下。大类可选择，但是小类不能做选择了。这是什么原因？值到底要怎样取呢？
代码如下： <td width="670" style="color: #000; font-size: 12px; font-family:楷体_GB2312" bgcolor="#999999">
<select name=ClassID size=1 onChange="changelocation(document.myform.ClassID.options[document.myform.ClassID.selectedIndex].value)" style="font-size: 12px" >
<option value=0>选择大类</option>
<option value=饰品> 饰品 </option>
<option value=鞋类> 鞋类 </option>
<option value=办公文具> 办公文具</option>
<option value=花类> 花类</option>
<option value=电子钟表> 电子钟表</option>
<option value=针棉、纺织> 针棉、纺织</option>
<option value=服饰及辅料> 服饰及辅料</option>
<option value=五金工具> 五金工具</option>
<option value=化妆品> 化妆品</option>
<option value=皮具箱包> 皮具箱包</option>
<option value=家居用品> 家居用品</option>
<option value=家用电器> 家用电器</option>
<option value=体育用品> 体育用品</option>
<option value=副食、饮料> 副食、饮料</option>
<option value=礼品、工艺品> 礼品、工艺品</option>
<option value=商业服务> 商业服务</option>
<option value=袜类> 袜类</option>
<option value=包装、印刷> 包装、印刷</option>
<option value=通讯产品> 通讯产品</option>
<option value=玩具> 玩具</option>
</select>
<!--<span lang="en-us"> </span> -->
<select name="NClassID" style="font-size: 12px">
<option selected value=0>选择小类</option>
</select>
<!-- Js 开始-->
<script language = "javascript">
var onecount;
onecount=0;
subcat = new Array();
<!-- include asp page-->
subcat[1] = new Array("仿真花、叶、藤","4","40");
subcat[2] = new Array("仿真树木","4","20");
subcat[3] = new Array("仿真水果","4","21");
subcat[4] = new Array("光纤花","4","23");
subcat[5] = new Array("干花","4","24");
subcat[6] = new Array("盆花","4","25");
subcat[7] = new Array("盆景","4","26");
subcat[8] = new Array("栽培系列","4","27");
subcat[9] = new Array("花盆架","4","28");
subcat[10] = new Array("其它花类","4","29");
subcat[11] = new Array("凉鞋","2","336");
subcat[12] = new Array("拖鞋","2","341");
subcat[13] = new Array("旅游鞋","2","342");
subcat[14] = new Array("皮鞋","2","352");
subcat[15] = new Array("童鞋","2","355");
subcat[16] = new Array("球鞋","2","357");
subcat[17] = new Array("休闲鞋","2","359");
subcat[18] = new Array("布鞋","2","365");
subcat[19] = new Array("溜冰鞋","2","366");
subcat[20] = new Array("鞋底","2","368");
subcat[21] = new Array("雨鞋","2","373");
subcat[22] = new Array("其它鞋类","2","400");
subcat[23] = new Array("随身听","5","402");
subcat[24] = new Array("收音机","5","405");
subcat[25] = new Array("复读机","5","409");
subcat[26] = new Array("领带","6","410");
subcat[27] = new Array("纺织辅料","6","412");
subcat[28] = new Array("手套","6","414");
subcat[29] = new Array("毛巾、浴巾","6","420");
subcat[30] = new Array("帽子","6","425");
subcat[31] = new Array("文胸","6","426");
subcat[32] = new Array("内衣、内裤","6","444");
subcat[33] = new Array("泳装","6","450");
subcat[34] = new Array("手帕","6","457");
subcat[35] = new Array("围巾、头巾","6","460");
subcat[36] = new Array("花边","6","464");
subcat[37] = new Array("床上用品","6","465");
subcat[38] = new Array("运动服装","6","469");
subcat[39] = new Array("坐垫、靠垫","6","474");
subcat[40] = new Array("窗帘布","6","476");
subcat[41] = new Array("鞋垫、地巾","6","478");
subcat[42] = new Array("台布、茶巾","6","483");
subcat[43] = new Array("其它针棉","6","494");
subcat[44] = new Array("化妆笔","9","510");
subcat[45] = new Array("口红","9","511");
subcat[46] = new Array("唇膏","9","514");
subcat[47] = new Array("唇彩","9","527");
subcat[48] = new Array("甲油","9","530");
subcat[49] = new Array("日用化学品","9","532");
subcat[50] = new Array("眼影","9","533");
subcat[51] = new Array("睫毛膏","9","535");
subcat[52] = new Array("旅行箱包","10","538");
subcat[53] = new Array("化妆包","10","544");
subcat[54] = new Array("公文包、箱","10","545");
subcat[55] = new Array("书包","10","548");
subcat[56] = new Array("背包","10","551");
subcat[57] = new Array("手提包、时装包","10","555");
subcat[58] = new Array("工艺包","10","556");
subcat[59] = new Array("票夹、腰包","10","566");
subcat[60] = new Array("手机套、包","10","575");
subcat[61] = new Array("皮带、皮带扣","10","576");
subcat[62] = new Array("箱包配件","10","577");
subcat[63] = new Array("其他皮具","10","584");
subcat[64] = new Array("厨卫用品、用具","11","592");
subcat[65] = new Array("婴儿用品","11","605");
subcat[66] = new Array("日用塑料制品","11","607");
subcat[67] = new Array("日用玻璃制品","11","608");
subcat[68] = new Array("日用化学品","11","609");
subcat[69] = new Array("清洁用品、用具","11","610");
subcat[70] = new Array("日杂用品","11","611");
subcat[71] = new Array("宾馆酒店专用品","11","612");
subcat[72] = new Array("家用陶瓷、搪瓷制品","11","613");
subcat[73] = new Array("其它日用品","11","614");
subcat[74] = new Array("净水器","12","620");
subcat[75] = new Array("饮水机","12","621");
subcat[76] = new Array("榨汁机","12","622");
subcat[77] = new Array("搅拌机","12","623");
subcat[78] = new Array("咖啡机，豆浆机","12","624");
subcat[79] = new Array("电热壶，电热杯","12","625");
subcat[80] = new Array("电炒锅、电饭煲","12","626");
subcat[81] = new Array("微波炉","12","627");
subcat[82] = new Array("洗碗机","12","628");
subcat[83] = new Array("消毒柜","12","629");
subcat[84] = new Array("抽油烟机","12","630");
subcat[85] = new Array("冰箱、冷柜","12","631");
subcat[86] = new Array("湿度调节器","12","632");
subcat[87] = new Array("空气净化器","12","633");
subcat[88] = new Array("取暖电器","12","634");
subcat[89] = new Array("空调","12","635");
subcat[90] = new Array("热水器","12","636");
subcat[91] = new Array("电吹风","12","637");
subcat[92] = new Array("吸尘器","12","638");
subcat[93] = new Array("电扇、排气扇","12","639");
subcat[94] = new Array("电熨斗","12","640");
subcat[95] = new Array("洗衣、干衣设备","12","641");
subcat[96] = new Array("干手机、给皂液机","12","642");
subcat[97] = new Array("氧气机","12","643");
subcat[98] = new Array("电驱虫器","12","644");
subcat[99] = new Array("电视机","12","645");
subcat[100] = new Array("录放相机、VCD、DVD","12","646");
subcat[101] = new Array("组合音响及附件","12","647");
subcat[102] = new Array("收音机、录音机、放音机","12","648");
subcat[103] = new Array("音箱","12","649");
subcat[104] = new Array("耳机","12","650");
subcat[105] = new Array("其他","12","651");
subcat[106] = new Array("视听器材","12","652");
subcat[107] = new Array("遥控器","12","653");
subcat[108] = new Array("空气清新、制氧、加湿机","12","654");
subcat[109] = new Array("其它小家电","12","655");
subcat[110] = new Array("巧克力","14","656");
subcat[111] = new Array("牛肉干","14","657");
subcat[112] = new Array("茶叶","14","658");
subcat[113] = new Array("调味品","14","659");
subcat[114] = new Array("蛋糕油","14","660");
subcat[115] = new Array("糖果","14","661");
subcat[116] = new Array("饼干","14","662");
subcat[117] = new Array("炒货","14","663");
subcat[118] = new Array("酒类","14","664");
subcat[119] = new Array("饮品","14","665");
subcat[120] = new Array("小食品","14","666");
subcat[121] = new Array("其他食品","14","667");
subcat[122] = new Array("抽纱及其他工艺纺织","15","668");
subcat[123] = new Array("木制工艺品","15","669");
subcat[124] = new Array("植物编织工艺品","15","670");
subcat[125] = new Array("石料工艺品","15","671");
subcat[126] = new Array("宝石玉石工艺品","15","672");
subcat[127] = new Array("陶瓷工艺品","15","673");
subcat[128] = new Array("金属工艺品","15","674");
subcat[129] = new Array("玻璃工艺品","15","675");
subcat[130] = new Array("水晶工艺品","15","676");
subcat[131] = new Array("塑料工艺品","15","677");
subcat[132] = new Array("树脂工艺品","15","678");
subcat[133] = new Array("泥塑工艺品","15","679");
subcat[134] = new Array("纸制工艺品","15","680");
subcat[135] = new Array("天然工艺品","15","681");
subcat[136] = new Array("针钩及编结工艺品","15","682");
subcat[137] = new Array("雕刻工艺品","15","683");
subcat[138] = new Array("仿古工艺品","15","684");
subcat[139] = new Array("仿生工艺品","15","685");
subcat[140] = new Array("宗教工艺品","15","686");
subcat[141] = new Array("民间工艺品","15","687");
subcat[142] = new Array("雕塑","15","688");
subcat[143] = new Array("字画","15","689");
subcat[144] = new Array("古董和收藏品","15","690");
subcat[145] = new Array("珠宝首饰、金银器","15","691");
subcat[146] = new Array("时尚饰品","15","692");
subcat[147] = new Array("打火机、烟具","15","693");
subcat[148] = new Array("钟表","15","694");
subcat[149] = new Array("相框、画框","15","695");
subcat[150] = new Array("蜡烛及烛台","15","696");
subcat[151] = new Array("熏香及熏香炉","15","697");
subcat[152] = new Array("装饰盒","15","698");
subcat[153] = new Array("钥匙扣，链","15","699");
subcat[154] = new Array("盆景","15","700");
subcat[155] = new Array("玩具","15","701");
subcat[156] = new Array("工艺礼品","15","702");
subcat[157] = new Array("纪念品","15","703");
subcat[158] = new Array("广告礼品","15","704");
subcat[159] = new Array("节日用品","15","705");
subcat[160] = new Array("殡葬用品","15","706");
subcat[161] = new Array("工美礼品玩具设计加工","15","707");
subcat[162] = new Array("其他","15","708");
subcat[163] = new Array("水晶丝袜","17","720");
subcat[164] = new Array("天鹅绒丝袜","17","721");
subcat[165] = new Array("包芯纱袜","17","722");
subcat[166] = new Array("休闲袜","17","723");
subcat[167] = new Array("运动袜","17","724");
subcat[168] = new Array("五指袜","17","725");
subcat[169] = new Array("男棉袜","17","726");
subcat[170] = new Array("男丝袜","17","727");
subcat[171] = new Array("对对袜","17","728");
subcat[172] = new Array("儿童袜","17","729");
subcat[173] = new Array("保暖袜裤","17","730");
subcat[174] = new Array("袜子原材料","17","731");
subcat[175] = new Array("品牌袜子","17","732");
subcat[176] = new Array("短袜","17","733");
subcat[177] = new Array("其它袜类","17","734");
subcat[178] = new Array("脚链","1","936");
subcat[179] = new Array("儿童饰品","1","938");
subcat[180] = new Array("笔类","3","358");
subcat[181] = new Array("薄、本、册","3","360");
subcat[182] = new Array("办公纸张","3","361");
subcat[183] = new Array("簿、本、册","3","362");
subcat[184] = new Array("日用文具","3","363");
subcat[185] = new Array("办公设备","3","364");
subcat[186] = new Array("传真机","3","367");
subcat[187] = new Array("复印机","3","369");
subcat[188] = new Array("考勤机","3","374");
subcat[189] = new Array("视讯会议系统","3","376");
subcat[190] = new Array("办公家具","3","377");
subcat[191] = new Array("其他办公用品","3","378");
subcat[192] = new Array("收录机","5","379");
subcat[193] = new Array("耳机、耳塞","5","380");
subcat[194] = new Array("电动剃须刀","5","381");
subcat[195] = new Array("电子计算器","5","382");
subcat[196] = new Array("电子记事本、字典","5","383");
subcat[197] = new Array("电筒、电池","5","384");
subcat[198] = new Array("打火、烟具","5","385");
subcat[199] = new Array("插头，插座","5","386");
subcat[200] = new Array("稳压器、充电器","5","387");
subcat[201] = new Array("天线及放大器","5","388");
subcat[202] = new Array("照明、灯具","5","389");
subcat[203] = new Array(" 钟、表","5","390");
subcat[204] = new Array("仪器、仪表","5","391");
subcat[205] = new Array("学习机","5","392");
subcat[206] = new Array("钟表配件","5","393");
subcat[207] = new Array("游戏机、卡","5","394");
subcat[208] = new Array("激光产品","5","395");
subcat[209] = new Array("门钟、门铃、防盗器","5","396");
subcat[210] = new Array("点、验钞机","5","397");
subcat[211] = new Array("定时器、指南针","5","398");
subcat[212] = new Array("电子保健品","5","399");
subcat[213] = new Array("电子配件、元器件","5","401");
subcat[214] = new Array("照相器材","5","403");
subcat[215] = new Array("其他电子产品","5","408");
subcat[216] = new Array("皮带及配件","7","438");
subcat[217] = new Array("拉链","7","439");
subcat[218] = new Array("纽扣","7","440");
subcat[219] = new Array("衬料","7","441");
subcat[220] = new Array("时尚饰品","7","442");
subcat[221] = new Array("其他辅料","7","443");subcat[222] = new Array("帽子","7","445");subcat[223] = new Array("领带","7","446");subcat[224] = new Array("围巾、头巾","7","447");subcat[225] = new Array("手套","7","448");subcat[226] = new Array("袜子","7","449");subcat[227] = new Array("针织服装","7","451");subcat[228] = new Array("梭织服装","7","452");subcat[229] = new Array("品牌服装","7","453");subcat[230] = new Array("男装","7","454");subcat[231] = new Array("女装","7","455");subcat[232] = new Array("婴儿服装","7","456");subcat[233] = new Array("内衣","7","458");subcat[234] = new Array("睡衣、浴衣","7","459");subcat[235] = new Array("衬衣","7","461");subcat[236] = new Array("毛衣","7","462");subcat[237] = new Array("西服","7","463");subcat[238] = new Array("大衣、风衣","7","466");subcat[239] = new Array("裤子","7","467");subcat[240] = new Array("休闲服装","7","468");subcat[241] = new Array("民族服装","7","470");subcat[242] = new Array("婚纱、礼服","7","471");subcat[243] = new Array("工作服、制服","7","472");subcat[244] = new Array("特制服装","7","473");subcat[245] = new Array("丝绸服装","7","475");subcat[246] = new Array("羊毛、羊绒衫","7","477");subcat[247] = new Array("服装加工设备","7","479");subcat[248] = new Array("整熨洗涤设备","7","480");subcat[249] = new Array("鞋加工及修理设备","7","481");subcat[250] = new Array("服饰鞋帽设计加工","7","482");subcat[251] = new Array("锁具","8","484");subcat[252] = new Array("指甲钳","8","485");subcat[253] = new Array("钥匙坯","8","486");subcat[254] = new Array("刀、剑","8","487");subcat[255] = new Array("剪刀、美工刀","8","488");subcat[256] = new Array("刮剃刀、刀片","8","489");subcat[257] = new Array("五金工具","8","490");subcat[258] = new Array("园艺五金","8","491");subcat[259] = new Array("门窗五金","8","492");subcat[260] = new Array("滑板车","8","493");subcat[261] = new Array("装饰水暖","8","495");subcat[262] = new Array("保温杯、口子杯","8","496");subcat[263] = new Array("不锈钢厨房用具","8","497");subcat[264] = new Array("安全扣、头盔","8","498");subcat[265] = new Array("金属匙扣","8","500");subcat[266] = new Array("金属架、台","8","501");subcat[267] = new Array("测量工具","8","503");subcat[268] = new Array("行李服务车","8","504");subcat[269] = new Array("胶水制品","8","505");subcat[270] = new Array("其它五金产品","8","506");subcat[271] = new Array("头发护理","9","507");subcat[272] = new Array("香水、花露水","9","508");subcat[273] = new Array("护肤霜、乳、液","9","509");subcat[274] = new Array("粉饼、粉底霜","9","512");subcat[275] = new Array("沐浴露、面膜","9","513");subcat[276] = new Array("专业美容美发用品","9","515");subcat[277] = new Array("日用化学品","9","516");subcat[278] = new Array("儿童化妆品","9","517");subcat[279] = new Array("美容刀具、仪器","9","518");subcat[280] = new Array("美容材料及用具","9","519");subcat[281] = new Array("其它化妆品","9","520");subcat[282] = new Array("通讯产品配件部件","19","813");subcat[283] = new Array("锂电池、镍氢电池","19","814");subcat[284] = new Array("磁卡、IP卡、IC卡","19","815");subcat[285] = new Array("来电显示器","19","816");subcat[286] = new Array("拨号器","19","817");subcat[287] = new Array("充电器","19","818");subcat[288] = new Array("天线","19","819");subcat[289] = new Array("电话机、可视电话","19","821");subcat[290] = new Array("移动电话","19","822");subcat[291] = new Array("集团电话","19","823");subcat[292] = new Array("手机及配件","19","824");subcat[293] = new Array("传真机","19","825");subcat[294] = new Array("对讲机","19","827");subcat[295] = new Array("网络通信产品","19","828");subcat[296] = new Array("通讯、声讯系统","19","829");subcat[297] = new Array("广电、电信设备","19","834");subcat[298] = new Array("通讯产品制造设备","19","835");subcat[299] = new Array("其他","19","836");subcat[300] = new Array("木制玩具","21","837");subcat[301] = new Array("塑料玩具","21","838");subcat[302] = new Array("填充、绒毛玩具","21","839");subcat[303] = new Array("电子玩具","21","840");subcat[304] = new Array("电动玩具","21","841");subcat[305] = new Array("玩具珠、球","21","842");subcat[306] = new Array("娃娃","21","843");subcat[307] = new Array("玩具车","21","844");subcat[308] = new Array("玩具枪","21","845");subcat[309] = new Array("模型玩具","21","846");subcat[310] = new Array("益智玩具","21","847");subcat[311] = new Array("童车及配件","21","848");subcat[312] = 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图片如下：
