var OnewayCityAirList={}
                var ReturnCityAirList={}

                /**单程，往返两种情况下不同出发城市对应的到达城市*/
                function kindselect(SCityId,ECityId)
                {
	                var kind = '0';
	                var str1 = '';
	                var SCity = document.getElementById(SCityId);
	                var ECity = document.getElementById(ECityId);
	                var ctValue='';
	                try{
		                ctValue=SCity.options[SCity.selectedIndex].value;
	                   }
	                catch(e){}
	                ddchange_fromCity(ctValue,SCity,ECity);
                }
                //单程对应出发到达城市对
                function ddchange_fromCity(ctCode,SCity,ECity){
	                var len = ECity.options.length;
	                for(var i = (len-1); i >= 0; i--) {
		                if (ECity.options[i] != null) {
			                ECity.options[i] = null;
		                }
	                }	
	                var itemno=[],itemcode=[];
	                for(var i=0;i<OnewayCityAirList[ctCode].length;i++){
		                itemno[itemno.length]=OnewayCityAirList[ctCode][i][0];
		                itemcode[itemcode.length]=OnewayCityAirList[ctCode][i][1];
	                }
 	                for(var i=0;i<itemno.length;i++){
		                var item = document.createElement('OPTION');
		                item.text = itemno[i];
		                item.value = itemcode[i];
		                ECity.add(item);
    	                }	
                }
              
                        OnewayCityAirList['0']=[['请选择...','0']];OnewayCityAirList["CSX"]=[['CHONGQING 重庆','CKG'],['XIAMEN 厦门','XMN']];
OnewayCityAirList["CKG"]=[['QINGDAO 青岛','TAO'],['GUANGZHOU 广州','CAN'],['XIAMEN 厦门','XMN'],['HAIKOU 海口','HAK'],['WUHAN 武汉','WUH'],['KUNMING 昆明','KMG'],['XISHUANGBANNA 西双版纳','JHG'],['ZHUHAI 珠海','ZUH'],['NANJING 南京','NKG'],['SANYA 三亚','SYX'],['GUILIN 桂林','KWL'],['TIANJIN 天津','TSN'],['FUZHOU 福州','FOC'],['CHANGSHA 长沙','CSX']];
OnewayCityAirList["FOC"]=[['WUHAN 武汉','WUH'],['CHONGQING 重庆','CKG']];
OnewayCityAirList["CAN"]=[['CHONGQING 重庆','CKG']];
OnewayCityAirList["KWL"]=[['CHONGQING 重庆','CKG']];
OnewayCityAirList["HAK"]=[['CHONGQING 重庆','CKG']];
OnewayCityAirList["KMG"]=[['XISHUANGBANNA 西双版纳','JHG'],['CHONGQING 重庆','CKG']];
OnewayCityAirList["NKG"]=[['QINGDAO 青岛','TAO'],['CHONGQING 重庆','CKG']];
OnewayCityAirList["TAO"]=[['NANJING 南京','NKG'],['CHONGQING 重庆','CKG']];
OnewayCityAirList["SYX"]=[['CHONGQING 重庆','CKG']];
OnewayCityAirList["TSN"]=[['CHONGQING 重庆','CKG']];
OnewayCityAirList["WUH"]=[['CHONGQING 重庆','CKG'],['FUZHOU 福州','FOC']];
OnewayCityAirList["XMN"]=[['CHANGSHA 长沙','CSX'],['CHONGQING 重庆','CKG']];
OnewayCityAirList["JHG"]=[['CHONGQING 重庆','CKG'],['KUNMING 昆明','KMG']];
OnewayCityAirList["ZUH"]=[['CHONGQING 重庆','CKG']];