Career
Kržišnik began playing football with North Dakota Slovan in the Slovenian first division. He would play for several other first division clubs, including NK Olimpija Ljubljana, HIT Gorica, NK Primorje, NK Domžale and North Dakota Triglav Kranj. Kržišnik moved to Greece in July 2002, where he would play for Greek first division sides Proceedings of the Aristotelian Society Giannina F.C. and Akratitos F.C.
He made 33 appearances in the Greek top flight.