function wycieczka(link)
{
    windowHeight=768;
    windowWidth=1024;
    windowName='Wycieczka';
    windowUri=link+'/index.html';
    
    var centerWidth = (window.screen.width - windowWidth) / 2;
    var centerHeight = (window.screen.height - windowHeight) / 2;

    newWindow = window.open(windowUri, windowName, 'resizable=1,width=' + windowWidth + 
        ',height=' + windowHeight + 
        ',left=' + centerWidth + 
        ',top=' + centerHeight);

    newWindow.focus();
    return newWindow.name;
}

function kalendarz(pole)
{
  windowHeight=170;
  windowWidth=200;
  windowName='Kalendarz';
  windowUri='includes/kalendarz.php?pole='+pole;
  
  var centerWidth = (window.screen.width - windowWidth) / 2;
  var centerHeight = (window.screen.height - windowHeight) / 2;
  
	newWindow = window.open(windowUri, windowName, 'resizable=0,width=' + windowWidth + 
      ',height=' + windowHeight + 
      ',left=' + centerWidth + 
      ',top=' + centerHeight);

    newWindow.focus();
    return newWindow.name;
}

function pobierzDate(data, pole)
{
  window.opener.document.getElementsByName(pole)[0].value = data;
	window.close();
}

function sprawdz()
{
  var brak_danych = false;
  var imie = document.getElementsByName('imie')[0];
  var telefon = document.getElementsByName('telefon')[0];
  var email = document.getElementsByName('email')[0];
  var tresc = document.getElementsByName('tresc')[0];
  
  if (imie.value == ""){
    imie.style.border='1px solid #ff0036';
    brak_danych=true;
  }
  else imie.style.border='1px solid #dad9d5';
  
  if (telefon.value == ""){
    telefon.style.border='1px solid #ff0036';
    brak_danych=true;
  }
  else telefon.style.border='1px solid #dad9d5';  
  
  if (email.value == ""){
    email.style.border='1px solid #ff0036';
    brak_danych=true;
  }
  else email.style.border='1px solid #dad9d5';  
  
  if (tresc.value == ""){
    tresc.style.border='1px solid #ff0036';
    brak_danych=true;
  }  
  else tresc.style.border='1px solid #dad9d5';  
  
  if (!brak_danych)
    document.forms[0].submit();
  else
    alert ('Proszę wypełnić zaznaczone pola!');
}