// Copyright (c) 2006 by Karol Damian Schmidt
// Wszelkie prawa zastrzeżone.

var selectedDiv;

function ustawBlok(blok){
  selectedDiv = document.getElementById(blok);
  if (selectedDiv){
    if (selectedDiv.style.display == 'none'){
      selectedDiv.style.display = 'block';
    } else{
      selectedDiv.style.display = 'none';
    }
  }
}