var ceny = [[0,31.9],[-1,30.9],[-2,29.9],[-3,27.7]];

var litry = [[0,33.8],[-1,36.9],[-2,32.11],[-3,31]];

var tdatumy = {0:['21.04.2015'],1:['01.04.2015'],2:['07.03.2015'],3:['13.02.2015']};