var selectTag = myform.brandid;
selectTag.options.length=0;
selectTag.options.add(new Option("请选择品牌","-1"));
selectTag.options.add(new Option("-国内品牌-","-1"));
selectTag.options.add(new Option("  北京奔驰","147"));
selectTag.options.add(new Option("  北京吉普","12"));
selectTag.options.add(new Option("  北京克莱斯勒","163"));
selectTag.options.add(new Option("  北京三菱","13"));
selectTag.options.add(new Option("  北京现代","27"));
selectTag.options.add(new Option("  北汽","18"));
selectTag.options.add(new Option("  奔腾","153"));
selectTag.options.add(new Option("  比亚迪","91"));
selectTag.options.add(new Option("  昌河铃木","31"));
selectTag.options.add(new Option("  长安","167"));
selectTag.options.add(new Option("  长安福特","43"));
selectTag.options.add(new Option("  长安铃木","35"));
selectTag.options.add(new Option("  长安马自达","149"));
selectTag.options.add(new Option("  长安沃尔沃","158"));
selectTag.options.add(new Option("  长城汽车","4"));
selectTag.options.add(new Option("  长丰猎豹","5"));
selectTag.options.add(new Option("  大迪","45"));
selectTag.options.add(new Option("  东风本田","123"));
selectTag.options.add(new Option("  东风标致","38"));
selectTag.options.add(new Option("  东风柳汽","46"));
selectTag.options.add(new Option("  东风日产","92"));
selectTag.options.add(new Option("  东风雪铁龙","37"));
selectTag.options.add(new Option("  东风悦达起亚","57"));
selectTag.options.add(new Option("  东南汽车","51"));
selectTag.options.add(new Option("  飞碟汽车","146"));
selectTag.options.add(new Option("  福田","52"));
selectTag.options.add(new Option("  广州本田","32"));
selectTag.options.add(new Option("  广州丰田","150"));
selectTag.options.add(new Option("  哈飞","30"));
selectTag.options.add(new Option("  海马汽车","155"));
selectTag.options.add(new Option("  海南马自达","26"));
selectTag.options.add(new Option("  红旗","10"));
selectTag.options.add(new Option("  华北","124"));
selectTag.options.add(new Option("  华晨宝马","29"));
selectTag.options.add(new Option("  华晨金杯","60"));
selectTag.options.add(new Option("  华晨中华","53"));
selectTag.options.add(new Option("  华利","68"));
selectTag.options.add(new Option("  华普","90"));
selectTag.options.add(new Option("  华泰现代","117"));
selectTag.options.add(new Option("  华翔富奇","118"));
selectTag.options.add(new Option("  吉奥","138"));
selectTag.options.add(new Option("  吉利","54"));
selectTag.options.add(new Option("  江淮汽车","41"));
selectTag.options.add(new Option("  江铃","55"));
selectTag.options.add(new Option("  江铃陆风","6"));
selectTag.options.add(new Option("  江南奥拓","106"));
selectTag.options.add(new Option("  力帆","154"));
selectTag.options.add(new Option("  南京菲亚特","34"));
selectTag.options.add(new Option("  南汽","23"));
selectTag.options.add(new Option("  奇瑞汽车","33"));
selectTag.options.add(new Option("  庆铃","100"));
selectTag.options.add(new Option("  上海大众","58"));
selectTag.options.add(new Option("  上海通用别克","93"));
selectTag.options.add(new Option("  上海通用凯迪拉克","122"));
selectTag.options.add(new Option("  上海通用雪佛兰","139"));
selectTag.options.add(new Option("  曙光汽车","22"));
selectTag.options.add(new Option("  双环汽车","7"));
selectTag.options.add(new Option("  天津一汽","39"));
selectTag.options.add(new Option("  天马汽车","62"));
selectTag.options.add(new Option("  天汽美亚","64"));
selectTag.options.add(new Option("  新凯","21"));
selectTag.options.add(new Option("  扬子","133"));
selectTag.options.add(new Option("  一汽奥迪","9"));
selectTag.options.add(new Option("  一汽大众","8"));
selectTag.options.add(new Option("  一汽丰田","24"));
selectTag.options.add(new Option("  一汽马自达","11"));
selectTag.options.add(new Option("  郑州日产","28"));
selectTag.options.add(new Option("  中兴","19"));
selectTag.options.add(new Option("  众泰","156"));
selectTag.options.add(new Option("-国外品牌-","-1"));
selectTag.options.add(new Option("  GMC","151"));
selectTag.options.add(new Option("  MG 罗孚","112"));
selectTag.options.add(new Option("  MINI","169"));
selectTag.options.add(new Option("  smart","144"));
selectTag.options.add(new Option("  阿尔法罗密欧","86"));
selectTag.options.add(new Option("  奥迪","79"));
selectTag.options.add(new Option("  保时捷","81"));
selectTag.options.add(new Option("  宝马","80"));
selectTag.options.add(new Option("  奔驰","47"));
selectTag.options.add(new Option("  本田","75"));
selectTag.options.add(new Option("  标致","88"));
selectTag.options.add(new Option("  宾利","120"));
selectTag.options.add(new Option("  大众","50"));
selectTag.options.add(new Option("  道奇","95"));
selectTag.options.add(new Option("  法拉利","78"));
selectTag.options.add(new Option("  丰田","63"));
selectTag.options.add(new Option("  福特","61"));
selectTag.options.add(new Option("  光冈","165"));
selectTag.options.add(new Option("  悍马","42"));
selectTag.options.add(new Option("  吉普","71"));
selectTag.options.add(new Option("  捷豹","85"));
selectTag.options.add(new Option("  凯迪拉克","44"));
selectTag.options.add(new Option("  克莱斯勒","69"));
selectTag.options.add(new Option("  兰博基尼","83"));
selectTag.options.add(new Option("  劳斯莱斯","107"));
selectTag.options.add(new Option("  雷克萨斯","65"));
selectTag.options.add(new Option("  雷诺","89"));
selectTag.options.add(new Option("  莲花","110"));
selectTag.options.add(new Option("  林肯","56"));
selectTag.options.add(new Option("  铃木","125"));
selectTag.options.add(new Option("  路虎","49"));
selectTag.options.add(new Option("  玛莎拉蒂","3"));
selectTag.options.add(new Option("  马自达","119"));
selectTag.options.add(new Option("  迈巴赫","162"));
selectTag.options.add(new Option("  欧宝","87"));
selectTag.options.add(new Option("  帕加尼","137"));
selectTag.options.add(new Option("  起亚","111"));
selectTag.options.add(new Option("  日产","73"));
selectTag.options.add(new Option("  萨博","97"));
selectTag.options.add(new Option("  三菱","128"));
selectTag.options.add(new Option("  世爵","164"));
selectTag.options.add(new Option("  双龙","76"));
selectTag.options.add(new Option("  斯巴鲁","116"));
selectTag.options.add(new Option("  斯柯达","143"));
selectTag.options.add(new Option("  威兹曼","166"));
selectTag.options.add(new Option("  沃尔沃","84"));
selectTag.options.add(new Option("  无限","72"));
selectTag.options.add(new Option("  现代","74"));
selectTag.options.add(new Option("  雪佛兰","152"));
selectTag.options.add(new Option("  雪铁龙","82"));
selectTag.options.add(new Option("  讴歌","157"));