var locations = [ ['Berlin', 52.52000660, 13.40495400, 'Berlin'],['Frankfurt', 50.11092210, 8.68212670, 'Frankfurt'],['Kassel', 51.31271140, 9.47974610, 'Kassel'],['Köln', 50.93753100, 6.96027860, 'Köln'],['Stuttgart', 48.77584590, 9.18293210, 'Stuttgart'],];