//show or hide block of new addres form
function client_newAddressForm ()
{
  var $selectBox    = document.getElementById('client.adresa_dodani.select');
  var $addressBlock = document.getElementById('client.adresa_dodani.block');
  var $selectIndex  = $selectBox.selectedIndex;
  var $selectItem   = $selectBox.options[$selectIndex].value;
  
  if ($selectItem == 'none'){$addressBlock.style.display = 'block';}
  else {$addressBlock.style.display = 'none';}
}