var params;
  var http_request;
  var aData;
  var tempStr;

  var filter_mail       = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
  var alert_string      = "All mandatory fields must be field in.";
  var alert_mail        = "Please enter a valid email address.";
  var alert_wrong_pass  = "Passwords do not match. Try again.";
  var alert_little_pass = "The password must be at least 5 characters";
  var confirm_delete    = "Confirm delete?";

//  if (window.XMLHttpRequest)
//  {
//    http_request = new XMLHttpRequest();
//  } else if (window.ActiveXObject)
//    {
//      http_request = new ActiveXObject("Microsoft.XMLHTTP");
//    }

  function gotoJ(url)
  {
    window.location.href = url;
    return;
  }

  function MM_preloadImages()
  {
    return;
  }

  function justified_blocks_height(block_name,col_count)
  {
    return;
  }
  
  function clear_form(form)
  {
    return;
  }
  
  function check_mandatory_fields(sender)
  {
    for (i = 0; i < sender.elements.length; i++)
    {
      if (sender.elements[i].className == "field_zirka")
      {
        if (sender.elements[i].value.length <= 1)
        {
          alert (alert_string);
          sender.elements[i].focus();
          return false;
        }
        if ((sender.elements[i].name == "mail") ||  (sender.elements[i].name == "email"))
        {
          if (!filter_mail.test(sender.elements[i].value))
          {
            alert(alert_mail);
            sender.elements[i].focus();
            return false;
          }
        }
        if ((sender.elements[i].type == "password") || (sender.elements[i].type == "new_password"))
        {
          if (sender.elements[i].value.length < 5)
          {
            alert(alert_little_pass);
            sender.elements[i].focus();
            return false;
          }
          if (sender.confirm_password)
          {
            if (sender.confirm_password.value != sender.elements[i].value)
            {
              alert(alert_wrong_pass);
              sender.confirm_password.focus();
              return false;
            }
          }
        }
      }
    }
    return true;
  }