var locations = [ ['Dortmund', 51.51358720, 7.46529810, 'Dortmund'],['Frankfurt', 50.11092210, 8.68212670, 'Frankfurt'],['Hannover', 52.37589160, 9.73201040, 'Hannover'],['Kassel', 51.31271140, 9.47974610, 'Kassel'],['Köln', 50.93753100, 6.96027860, 'Köln'],['Münster', 51.96066490, 7.62613470, 'Münster'],];