Prova la modifica (e poi prova a giocare tu con i parametri )

var advsp_route = new Array(150,350,1,1,40,510,350,1,2,40,620,350,1,3,40,780,550,3,4,40,780,-100,10,5,40,-100,-100,5,6,40,-100,150,5,0,40);

ciao