function CheckAllINBOX() {
	for (var i = 0; i < document.formList.elements.length; i++) {
		if(document.formList.elements[i].type == 'checkbox'){
			document.formList.elements[i].checked = !(document.formList.elements[i].checked);
		}
	}
}

var form = "";
var submitted = false;
var error = false;
var error_message = "";

function check_input(field_name, field_size, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == '' || field_value.length < field_size) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_radio(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].checked == true) {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_select(field_name, field_default, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == field_default) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_password(field_name_1, field_name_2, field_size, message_1, message_2) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password = form.elements[field_name_1].value;
    var confirmation = form.elements[field_name_2].value;

    if (password == '' || password.length < field_size) {
      error_message = error_message + "* " + message_1 + "\n";
      error = true;
    } else if (password != confirmation) {
      error_message = error_message + "* " + message_2 + "\n";
      error = true;
    }
  }
}

function check_password_new(field_name_1, field_name_2, field_name_3, field_size, message_1, message_2, message_3) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password_current = form.elements[field_name_1].value;
    var password_new = form.elements[field_name_2].value;
    var password_confirmation = form.elements[field_name_3].value;

    if (password_current == '' || password_current.length < field_size) {
      error_message = error_message + "* " + message_1 + "\n";
      error = true;
    } else if (password_new == '' || password_new.length < field_size) {
      error_message = error_message + "* " + message_2 + "\n";
      error = true;
    } else if (password_new != password_confirmation) {
      error_message = error_message + "* " + message_3 + "\n";
      error = true;
    }
  }
}

function check_form(form_name) {
  if (submitted == true) {
    alert("Ten formularz został już wysłany. Kliknij OK i poczekaj na zakończenie procesu.");
    return false;
  }

  error = false;
  form = form_name;
  error_message = "Wystąpiły błędy w trakcie przetwarzania formularza!\n\n";


  check_input("firstname", 2, "Imię musi mieć min. 2 znaki");
  check_input("lastname", 2, "Nazwisko musi mieć min. 2 znaki");


  check_input("email_address", 6, "Adres E-Mail musi mieć min. 6 znaków.");
  check_input("telephone", 3, "Nr Telefonu musi mieć min. 3 znaki");
  check_input("street_address", 5, "Ulica musi mieć min. 5 znaków");
  check_input("postcode", 4, "Kod Pocztowy musi mieć min. 4 znaki");
  check_input("city", 3, "Miasto musi mieć min. 3 znaki");
  check_input("content", 10, "Brak tresci wiadomosci");

  check_select("region", "", "Wybierz wojewodztwo z menu rozwijalnego.");

  check_radio("forma", "Wybierz formę zapłaty");
  
  check_password("password", "confirmation", 5, "Hasło musi mieć min. 5 znaków", "Potwierdzenie Hasła nie zgadza się z Hasłem.");
  check_password_new("password_current", "password_new", "password_confirmation", 5, "Hasło musi mieć min. 5 zn.", "Nowe Hasło musi mieć min. 5 zn.", "Potwierdzenie Hasła musi zgadzać się z twoim Nowym Hasłem.");

  if (error == true) {
    alert(error_message);
    return false;
  } else {
    submitted = true;
    return true;
  }
}

function newWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(mypage,myname,settings);
win.focus();
}

function okno(imgName,width,height,kat) {
	img = "tabela.php?id=" + imgName + "&kat=" + kat;
	targ = imgName + "imgwindow";
	window.open(img, targ, 'toolbar=no,location=no,scrolling=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width='+width+',height='+height);
}