var ar = new Array();

  ar[0] = new Array();
  ar[0][0] = new makeOptionKarta("wybierz");
  
  ar[1] = new Array(); // Solista
  ar[1][0] = new makeOptionKarta("wybierz");  
  ar[1][1] = new makeOptionKarta("do 8 lat");
  ar[1][2] = new makeOptionKarta("od 9 do 12 lat");
  ar[1][3] = new makeOptionKarta("od 13 do 16 lat");
  ar[1][4] = new makeOptionKarta("powyżej 16 lat"); 

  ar[2] = new Array(); // Duet
  ar[2][0] = new makeOptionKarta("wybierz");  
  ar[2][1] = new makeOptionKarta("do 12 lat");
  ar[2][2] = new makeOptionKarta("od 13 do 16 lat");
  ar[2][3] = new makeOptionKarta("powyżej 16 lat");
    
  ar[3] = new Array(); // Zespół wokalny
  ar[3][0] = new makeOptionKarta("wybierz");
  ar[3][1] = new makeOptionKarta("do 10 lat");
  ar[3][2] = new makeOptionKarta("od 11 do 16 lat");
  ar[3][3] = new makeOptionKarta("powyżej 16 lat");  
  
  function makeOptionKarta(text) {
  this.text = text;
}

function relateKarta(form) {
  var optionsKarta = form.kat_wiekowa.options;
  for (var i = optionsKarta.length - 1; i > 0; i--) {
    optionsKarta[i] = null;
  }
  var curAr = ar[form.kat_konkursowa.selectedIndex];
  for (var j = 0; j < curAr.length; j++) {
    optionsKarta[j] = new Option(curAr[j].text);
  }
  optionsKarta[0].selected = true;
  
}