sentences:  His 25 goals in less than half a season, surpassed previous record-holder Oliver Bierhoff, who scored 23 during the 1990–91 season.Janko continued his scoring streak with a four-goal performance against league rival Altach.On 6 December 2008, he surpassed Toni Polster as the all-time half-season scoring champion by scoring 30 goals in 20 matches.