function initiateToggle() { // wczytujemy ciasteczka i ukrywamy/odsłaniamy boxy
  var containers = ["Edycja1","Edycja2","Klasyfikacja"]; // elementy do sprawdzenia
  for(var i=0; i < containers.length; i++)
  {
      var value = readCookie(containers[i]);
      if(value !== null)
      {
        Toggle(containers[i],value,false,true);
      }
  }
}

function Toggle(box,state,save,img) { // nazwa boxa do ukrycia/odsłonięcia, opcjonalnie wymuszenie stanu, zapamiętaj (true/false), zmien obrazek (true/false)
  if(img)
  {
  var image = document.getElementsByName(box+'-link')[0].getElementsByTagName('img')[0];
  var newsrc = image.src.slice(0,image.src.lastIndexOf("/")+1);
  }
  var container = document.getElementById(box);
  
  state = (!state)? container.style.display : (state == 'block')? 'none' : 'block';
  
  if(state == 'none'){
    if(img)
    {
    image.src = newsrc + 'minus.gif';
    }
    container.style.display = 'block';
    if(save)
    {
      createCookie(box,'block',7);
    }
  }
  else
  {
    if(img)
    {
    image.src = newsrc + 'plus.gif';
    }
    container.style.display = 'none';
    if(save)
    {
      createCookie(box,'none',7);
    }
  }
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else
	{
    var expires = "";
  }
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ')
		{
      c = c.substring(1,c.length);
    }
		if (c.indexOf(nameEQ) == 0)
		{
      return c.substring(nameEQ.length,c.length);
    }
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}