$(document).ready(function() {

  if ($('ul.expandable').hasClass('expanded')) {
      $('ul.expandable > li').show();
  }
  else {
      $('ul.expandable > li').hide();
  }
  $('ul.expandable > a.menuHeader').toggle(
      function(){
          $(this).parent().children('li').show();
      },
      function(){
          $(this).parent().children('li').hide();
      }
  );
    
  var shopId = getRequestParameter('shop');
  $('#shop-' + shopId).children('li').show();



  $('input[name=s_company__foreign_company]').change(function() {
      var value = $(this).val();
      if (value == 0) {
          $('#foreign_company_fields').hide();
          $('#polish_company_fields').show();
      }
      else {
          $('#polish_company_fields').hide();
          $('#foreign_company_fields').show();
      }
  });
});

function getRequestParameter(parameterName)
{
  var url     = location.href;
  var pattern = new RegExp(parameterName + '=.+', 'gi');
  var shopId  = String(url).match(pattern);
  
  return String(shopId).match(/\d+/gi);
}