/*window.onload = pokaz_ukryj;*/

function pokaz_ukryj() {
  var cookie = getCookie('ribon_menu');
  if(cookie) {
    var values = cookie.split(',');

    for(var i = 0; i < values.length; i++) {
      var itm = getItem(values[i]);

      if(itm)
      itm.style.display = 'none';
    }
  }
}

function makeCookie(name, value) {
  var cookie = name + '=' + escape(value) + ';';
  document.cookie = cookie;
}

function getCookie(name) {
  if(document.cookie == '')
  return false;

  var firstPos;
  var lastPos;
  var cookie = document.cookie;

  firstPos = cookie.indexOf(name);

  if(firstPos != -1) {
    firstPos += name.length + 1;
    lastPos = cookie.indexOf(';', firstPos);

    if(lastPos == -1)
    lastPos = cookie.length;

    return unescape(cookie.substring(firstPos, lastPos));
  }

  else
  return false;
}

function getItem(id) {
  var itm = false;
  if(document.getElementById)
  itm = document.getElementById(id);
  else if(document.all)
  itm = document.all[id];
  else if(document.layers)
  itm = document.layers[id];

  return itm;
}

function ShowHide(id) {
  itm = getItem(id);

  if(!itm)
  return false;

  if(itm.style.display == 'none')
  itm.style.display = 'block';
  else
  itm.style.display = 'none';

  ////////////////////

  cookie = getCookie('ribon_menu');
  values = new Array();
  newval = new Array();
  add    = 1;

  if(cookie) {
    values = cookie.split(',');

    for(var i = 0; i < values.length; i++) {
      if(values[i] == id)
      add = 0;
      else
      newval[newval.length] = values[i];
    }
  }

  if(add)
  newval[newval.length] = id;

  makeCookie('ribon_menu', newval.join(','));

  return false;
}