routes = {"YVR-YYC":"","SFO-YVR":"","YEG-YVR":"","YVR-YXE":"","SAN-YVR":"","YVR-YXY":"","YVR-YYZ":""};airports = {"YVR":["49.194694","-123.183967","VANCOUVER INTERNATIONAL"],"YYC":["51.113833","-114.020333","CALGARY INTL"],"SFO":["37.618972","-122.374889","SAN FRANCISCO INTERNATIONAL"],"YEG":["53.309789","-113.579617","EDMONTON INTL"],"YXE":["52.170961","-106.699958","SASKATOON\/JOHN G DIEFENBAKER"],"SAN":["32.733556","-117.189667","SAN DIEGO INTERNATIONAL"],"YXY":["60.709553","-135.067269","WHITEHORSE\/ERIK NIELSEN INTL"],"YYZ":["43.676661","-79.630645","TORONTO\/LESTER B. PEARSON INTL"]};show = "PID_VAC047731";