function cityname(city)
    {
      var cityList = "九江|jiujiang|JIU,济南|jinan|TNA,吉林|jilin|JIL,济宁|jining|JNG,酒泉|jiuquan|CHW,景德镇|jingdezhen|JDZ,北京|beijing|BJS,嘉峪关|jiayuguan|JGN,佳木斯|jiamusi|JMU,井冈山|jinggangshan|JGS,锦州|jinzhou|JNZ,广元|guangyuan|GYS,广汉|guanghan|GHN,广州|guangzhou|CAN,桂林|guilin|KWL,贵阳|guiyang|KWE,哈密|hami|HMI,哈尔滨|haerbin|HRB,安康|ankang|AKA,安庆|anqing|AQG,安顺|anshun|AVA,昌都|changdu|BPX,赤峰|chifeng|CIF,常德|changde|CGD,长白山|changbaishan|NBS,成都|chengdu|CTU,长沙|changsha|CSX,朝阳|chaoyang|CHG,长春|changchun|CGQ,长治|changzhi|CIH,常州|changzhou|CZX,牡丹江|mudanjiang|MDG,兰州|lanzhou|LHW,连城|liancheng|LCX,库车|kuche|KCA,澳门|macao|MFM,昆明|kunming|KMG,洛阳|luoyang|LYA,绵阳|mianyang|MIG,那拉提|nalati|NLT,黎平|liping|HZH,芒市|mangshi|LUM,黄山|huangshan|TXN,喀纳斯|kanasi|KJI,齐齐哈尔|qiqihaer|NDG,拉萨|lasa|LXA,攀枝花|panzhihua|PZI,衢州|quzhou|JUZ,南京|nanjing|NKG,南昌|nanchang|KHN,南充|nanchong|NAO,南宁|nanning|NNG,南通|nantong|NTG,南阳|nanyang|NNY,梅县|meixian|MXZ,丽江|lijiang|LJG,荔波|libo|LLB,连云港|lianyungang|LYG,阿勒泰|aletai|AAT,林芝|linzhi|LZY,漠河|mohe|OHE,柳州|liuzhou|LZH,泸州|luzhou|LZO,临沧|lincang|LNJ,库尔勒|kuerle|KRL,临沂|linyi|LYI,满洲里|manzhouli|NZH,宁波|ningbo|NGB,青岛|qingdao|TAO,庆阳|qingyang|IQN,且末|qiemo|IQM,秦皇岛|qinhuangdao|SHP,丹东|dandong|DDG,兴义|xingyi|ACX,徐州|xuzhou|XUZ,思茅|simao|SYM,保山|baoshan|BSD,石家庄|shijiazhuang|SJW,喀什|kashi|KHG,沙市|shashi|SHS,克拉玛依|kelamayi|KRY,晋江|jinjiang|JJN,汕头|shantou|SWA,恩施|enshi|ENH,阿克苏|akesu|AKU,上海|shanghai|SHA,深圳|shenzhen|SZX,沈阳|shenyang|SHE,三亚|sanya|SYX,塔城|tacheng|TCG,西安|xian|SIA,西昌|xichang|XIC,厦门|xiamen|XMN,文山|wenshan|WNH,通辽|tongliao|TGO,武夷山|wuyishan|WUS,武汉|wuhan|WUH,温州|wenzhou|WNZ,梧州|wuzhou|WUZ,香港|hongkong|HKG,襄樊|xiangfan|XFN,西宁|xining|XNN,西双版纳|xishuangbanna|JHG,铜仁|tongren|TEN,天津|tianjin|TSN,天水|tianshui|THQ,达县|daxian|DAX,万州|wanzhou|WXN,太原|taiyuan|TYN,台州|taizhou|HYN,通化|tonghua|TNH,腾冲|tengchong|TCZ,乌兰浩特|wulanhaote|HLH,乌鲁木齐|wulumuqi|URC,乌海|wuhai|WUA,潍坊|weifang|WEF,锡林浩特|xilinhaote|XIL,无锡|wuxi|WUX,威海|weihai|WEH,康定|kangding|KGT,盐城|yancheng|YNZ,烟台|yantai|YNT,延吉|yanji|YNJ,延安|yanan|ENY,遵义|zunyi|ZYI,阜阳|fuyang_anhui|FUG,格尔木|geermu|GOQ,杭州|hangzhou|HGH,湛江|zhanjiang|ZHA,张家界|zhangjiajie|DYG,伊宁|yining|YIN,大连|dalian|DLC,东营|dongying|DOY,邯郸|handan|HDG,大理|dali|DLU,义乌|yiwu|YIW,衡阳|hengyang|HNY,伊春|yichun|LDS,永州|yongzhou|LLF,海拉尔|hailaer|HLD,北海|beihai|BHY,大庆|daqing|DQA,香格里拉|xianggelila|DIG,中卫|zhongwei|ZHY,宜昌|yichang|YIH,运城|yuncheng|YCU,宜宾|yibin|YBP,珠海|zhuhai|ZUH,大同|datong|DAT,敦煌|dunhuang|DNH,合肥|hefei|HFE,富蕴|fuyun|FYN,和田|hetian|HTN,玉树|yushu|YUS,昭通|zhaotong|ZAT,重庆|chongqing|CKG,汉中|hanzhong|HZG,呼和浩特|huhehaote|HET,赣州|ganzhou|KOW,银川|yinchuan|INC,郑州|zhengzhou|CGO,鄂尔多斯|eerduosi|DSN,榆林|yulin|UYN,舟山|zhoushan|HSN,海口|haikou|HAK,黑河|heihe|HEK,福州|fuzhou_fujian|FOC,芷江|zhijiang|HJJ,百色|baise|AEB,包头|baotou|BAV,惠州|huizhou|HUZ";
        var name = cityList.split(",");
        var list = cityList.split(",");
       var HomeCity=document.getElementById("op_ticket_start").value;
       var DestCity1 = document.getElementById("op_ticket_end").value;
       var DDatePeriod1 = document.getElementById("op_ticket_time").value;
       var ADatePeriod1 = document.getElementById("op_ticket_time_end").value;
       var name1 = "";
       var name2="";
       var name3="";
       var name4="";
        for(i=0;i<name.length;i++)
        {
            name1 = name[i].split("|")
            name2 = name1[0];
            if(HomeCity == name2)
            {
                  name3 = name1[2];
            }
            if(DestCity1==name2)
            {
                name4 = name1[2];
            }
        }
        if(ADatePeriod1 == "" || ADatePeriod1 ==null)
        {
        window.open('http://flights.ctrip.com/Domestic/ShowFareFirst.aspx?HomeCity='+name3+'&DestCity1='+name4+'&DDatePeriod1='+DDatePeriod1+'&sourcepage=openzsjdc');
        }
        else
        {
             window.open('http://flights.ctrip.com/Domestic/ShowFareFirst.aspx?HomeCity='+name3+'&DestCity1='+name4+'&DDatePeriod1='+DDatePeriod1+'&ADatePeriod1='+ADatePeriod1+'&FlightWay=D&sourcepage=openzsjdc');
        }

       
    }