before 2006 i think: from wikipedia:
Before the 2005-06 season, if two or more teams were tied in points for first place, for only one spot in a European tournament or in relegation zone, this teams would play tie-breaking games after the league's end, to determine which team would get the best place (useful to be champion, to be awarder a European tournament sport, or to be saved). From 2005-06 season, if two or more teams end the league with the same number of points, the deciding tie-breakers used are (in order):
Head-to-head records;
Goal difference of head-to-head records;
Goal difference of league;
Most goals for in league;
Draw.