function $k(id)
{
   return document.getElementById(id);
}

function dodaj()
{
   document.getElementById('dodaj').style.display = 'block';
}

function sprawdz_nazwe()
{
   var error = "";
   var bOk = true;
   if(kom_aler.show_date.value.length == 0)
   {
      bOk = false;
      error += "Podaj datê.\n";
   }
   if(bOk)
   {
      kom_aler.submit();
   }
   else
   {
      alert(error);
   }
   return bOk;
}

function kom_aler_change(where, count)
{
   var now = parseInt($k("kom_aler_num").innerHTML);

   $k("kom_aler_foto"+now).style.display = 'none';
   $k("kom_aler_name"+now).style.display = 'none';
   
   now += where;
   
   if(now < 1) 
   {
      now = count;
   }
   else if(now > count) 
   {
      now = 1;
   }
   
   $k("kom_aler_foto"+now).style.display = 'block';
   $k("kom_aler_name"+now).style.display = 'block';
   
   document.getElementById('kom_aler_num').innerHTML = now;
}

function zmien_pola(which)
{
   if($k("name"+which).disabled == true)
   {
      $k("delete"+which).checked = false;
      $k("name"+which).disabled = "";
      $k("foto"+which).disabled = "";
   }
   else if($k("name"+which).disabled == false)
   {
      $k("name"+which).disabled = "disabled";
      $k("foto"+which).disabled = "disabled";
   }   
}

function usun(which)
{
   if($k("name"+which).disabled == false)
   {
      $k("change"+which).checked = false;
      $k("name"+which).disabled = "disabled";
      $k("foto"+which).disabled = "disabled";
   }   
}

function zmien_aktywnosc()
{
   if($k("enabled").disabled == true)
   {
      $k("enabled").disabled = "";
   }
   else if($k("enabled").disabled == false)
   {
      $k("enabled").disabled = "disabled";
   }
}

function nowy(which)
{
   if($k("new"+which).checked == true)
   {
      $k("name"+which).disabled = "";
      $k("foto"+which).disabled = "";
   }
   else if($k("new"+which).checked == false)
   {
      $k("name"+which).disabled = "disabled";
      $k("foto"+which).disabled = "disabled";
   }
}

function zmien_date()
{
   if($k("show_date").disabled == true)
   {
      $k("kal").style.display = 'block';
      $k("show_date_cal").style.display = 'block';
      $k("show_date").disabled = "";
   }
   else if($k("show_date").disabled == false)
   {
      $k("kal").style.display = 'none';
      $k("show_date_cal").style.display = 'none';
      $k("show_date").disabled = "disabled";
   }
}