//var citypairs={'XMN':['FOC','CAN'],'CAN':['CTU','XMN'],'FOC':['CAN','XMN']};
var citypairs={'BAV':['WUH','XMN'],'PEK':['FOC','JJN','WUS','XMN','HSN'],'CGQ':['FOC','HGH','XMN'],'CSX':['CTU','CKG','DLC','FOC','KWE','HGH','TNA','NKG','NGB','TAO','JJN','TYN','XMN','XIY','CGO'],'CTU':['CSX','FOC','HGH','NGB','JJN','WUH','XMN','DYG'],'CKG':['CSX','FOC','KWL','HGH','KHN','NGB','JJN','WUH','XMN','CGO'],'DLC':['CSX','FOC','HRB','HGH','KHN','TAO','XMN','CGO'],'FOC':['PEK','CGQ','CSX','CTU','CKG','DLC','CAN','KWL','KWE','HRB','HAK','HGH','TNA','KMG','KHN','NKG','NNG','NGB','TAO','SHA','SHE','SZX','TYN','TSN','WUH','WUX','WUS','XMN','XIY','CGO'],'KOW':['XMN'],'CAN':['FOC','KHN','JJN','WUS','XMN'],'KWL':['CKG','FOC','KWE','HGH','XMN','XIY'],'KWE':['CSX','FOC','KWL','HGH','KHN','XMN'],'HRB':['DLC','FOC','HGH','KHN','NKG','TAO','SHE','XMN','CGO'],'HAK':['FOC','XMN','ZUH'],'HLD':['HGH','HET','XMN'],'HGH':['CGQ','CSX','CTU','CKG','DLC','FOC','KWL','KWE','HRB','HLD','TNA','LHW','KHN','NNG','TAO','JJN','SYX','SHE','SJW','TYN','TSN','WUH','XMN','XIY','DYG','CGO'],'HFE':['XMN'],'HET':['HLD','XMN','CGO'],'TNA':['CSX','FOC','HGH','JJN','WUH','WUS','XMN'],'KMG':['FOC','LZH','KHN','JJN','XMN'],'LHW':['HGH','URC','XMN','CGO'],'LZH':['KMG','XMN'],'KHN':['CKG','DLC','FOC','CAN','KWE','HRB','HGH','KMG','TAO','JJN','SHA','URC','XMN','XIY','CGO'],'NKG':['CSX','FOC','HRB','TAO','SHE','SJW','XMN'],'NNG':['FOC','HGH','SZX','XMN'],'NGB':['CSX','CTU','CKG','FOC','TAO','XMN'],'TAO':['CSX','DLC','FOC','HRB','HGH','KHN','NKG','NGB','XMN'],'JJN':['PEK','CSX','CTU','CKG','CAN','HGH','TNA','KMG','KHN','SHA','SZX','WUH','XIY','CGO','HSN'],'SYX':['HGH','XMN'],'SHA':['FOC','KHN','JJN','WUS','XMN'],'SHE':['FOC','HRB','HGH','NKG','XMN'],'SZX':['FOC','NNG','JJN','XMN'],'SJW':['HGH','NKG','XMN'],'TYN':['CSX','FOC','HGH','XMN'],'TSN':['FOC','HGH','WUH','WUX','XMN','XIY','CGO'],'WUH':['BAV','CTU','CKG','FOC','HGH','TNA','JJN','TSN','XMN','XIY'],'URC':['LHW','KHN','XMN','XIY','CGO'],'WUX':['FOC','TSN','XMN'],'WUS':['PEK','FOC','CAN','SHA','XMN','XIY','HSN'],'XMN':['BAV','PEK','CGQ','CSX','CTU','CKG','DLC','FOC','KOW','CAN','KWL','KWE','HRB','HAK','HLD','HGH','HFE','HET','TNA','KMG','LHW','LZH','KHN','NKG','NNG','NGB','TAO','SYX','SHA','SHE','SZX','SJW','TYN','TSN','WUH','URC','WUX','WUS','XIY','DYG','CGO','HSN','ZUH'],'XIY':['CSX','FOC','KWL','HGH','KHN','JJN','TSN','WUH','URC','WUS','XMN'],'DYG':['CTU','HGH','XMN'],'CGO':['CSX','CKG','DLC','FOC','HRB','HGH','HET','LHW','KHN','JJN','TSN','URC','XMN'],'HSN':['PEK','JJN','WUS','XMN'],'ZUH':['HAK','XMN']};
//var cityinfos={'XMN':'XIAMEN厦门','FOC':'FUZHOU福州','CAN':'GUANGZHOU广州','CTU':'CHENGDU成都'};
var cityinfos={'BAV':'BAOTOU包头','PEK':'BEIJING北京','CGQ':'CHANGCHUN长春','CSX':'CHANGSHA长沙','CTU':'CHENGDU成都','CKG':'CHONGQING重庆','DLC':'DALIAN大连','FOC':'FUZHOU福州','KOW':'GANZHOU赣州','CAN':'GUANGZHOU广州','KWL':'GUILIN桂林','KWE':'GUIYANG贵阳','HRB':'HAERBIN哈尔滨','HAK':'HAIKOU海口','HLD':'HAILAER海拉尔','HGH':'HANGZHOU杭州','HFE':'HEFEI合肥','HET':'HUHEHAOTE呼和浩特','TNA':'JINAN济南','KMG':'KUNMING昆明','LHW':'LANZHOU兰州','LZH':'LIUZHOU柳州','KHN':'NANCHANG南昌','NKG':'NANJING南京','NNG':'NANNING南宁','NGB':'NINGBO宁波','TAO':'QINGDAO青岛','JJN':'QUANZHOU泉州','SYX':'SANYA三亚','SHA':'SHANGHAI上海','SHE':'SHENYANG沈阳','SZX':'SHENZHEN深圳','SJW':'SHIJIAZHUANG石家庄','TYN':'TAIYUAN太原','TSN':'TIANJIN天津','WUH':'WUHAN武汉','URC':'WULUMUQI乌鲁木齐','WUX':'WUXI无锡','WUS':'WUYISHAN武夷山','XMN':'XIAMEN厦门','XIY':'XIAN西安','DYG':'ZHANGJIAJIE张家界','CGO':'ZHENGZHOU郑州','HSN':'ZHOUSHAN舟山','ZUH':'ZHUHAI珠海'};
var cityinfosFiltered={};
//var citycoordinates={'XMN':[632,505],'FOC':'[638,489]','CAN':'[547,539]','CTU':'[409,411]'};
var citycoordinates={'BAV':[481,241],'PEK':[569,241],'CGQ':[670,160],'CSX':[544,454],'CTU':[409,411],'CKG':[442,429],'DLC':[646,249],'FOC':[638,489],'KOW':[0,0],'CAN':[547,539],'KWL':[503,506],'KWE':[447,484],'HRB':[682,123],'HAK':[506,601],'HLD':[580,77],'HGH':[639,415],'HFE':[600,384],'HET':[502,241],'TNA':[583,295],'KMG':[377,516],'LHW':[400,323],'LZH':[0,0],'KHN':[587,443],'NKG':[622,381],'NNG':[469,551],'NGB':[661,408],'TAO':[632,298],'JJN':[635,500],'SYX':[490,628],'SHA':[651,387],'SHE':[659,198],'SZX':[565,547],'SJW':[550,279],'TYN':[518,284],'TSN':[581,250],'WUH':[556,412],'URC':[194,168],'WUX':[638,384],'WUS':[618,464],'XMN':[632,505],'XIY':[472,354],'DYG':[502,441],'CGO':[548,337],'HSN':[672,407],'ZUH':[553,553]};