var count=0;

function addLand(land)
{
  var hiddens=document.getElementById('hiddens');
  var hidden=document.createElement('input');
  hidden.setAttribute('type','hidden');
  hidden.setAttribute('name','lands['+count+']');
  hidden.setAttribute('value', getLand(land));
  hiddens.appendChild(hidden);
  count++;
}

function removeLand(land)
{
  var hiddens=document.getElementById('hiddens');
  for(var i=0;i<hiddens.childNodes.length;i++)
  {
    if(hiddens.childNodes[i].value==getLand(land))
    {
      hiddens.removeChild(hiddens.childNodes[i]);
    }
  }
}

function getLand(idOrName)
{
   var lands = new Array();
   lands[2] = 'dolnoslaskie';
   lands[32] = 'kujawskopomorskie';
   lands[56] = 'lubelskie';
   lands[81] = 'lubuskie';
   lands[96] = 'lodzkie';
   lands[121] = 'malopolskie';
   lands[144] = 'mazowieckie';
   lands[187] = 'opolskie';
   lands[200] = 'podkarpackie';
   lands[226] = 'podlaskie';
   lands[244] = 'pomorskie';
   lands[265] = 'slaskie';
   lands[302] = 'swietokrzyskie';
   lands[317] = 'warminskomazursie';
   lands[339] = 'wielkopolskie';
   lands[375] = 'zachodniopomorkie';

   lands['dolnoslaskie'] = 2;
   lands['kujawskopomorskie'] = 32;
   lands['lubelskie'] = 56;
   lands['lubuskie'] = 81;
   lands['lodzkie'] = 96;
   lands['malopolskie'] = 121;
   lands['mazowieckie'] = 144;
   lands['opolskie'] = 187;
   lands['podkarpackie'] = 200;
   lands['podlaskie'] = 226;
   lands['pomorskie'] = 244;
   lands['slaskie'] = 265;
   lands['swietokrzyskie'] = 302;
   lands['warminskomazursie'] = 317;
   lands['wielkopolskie'] = 339;
   lands['zachodniopomorkie'] = 375;

   return lands[idOrName];
}