function openWindow(link) // inspired by porneL - http://pornel.net/pups/
{
  try
  {
    var new_window = window.open(link, '_blank');
    if(new_window) return false;
  }
  catch(e){}
  return true;
}

function checkRequiredFields(form_id)
{
  ok = true;
  fields = document.getElementsByTagName('input');
  for(var i in fields) if(fields[i].className=='text required')
  {
    if(fields[i].parentNode.parentNode.parentNode.id==form_id && !fields[i].value) ok = false;
  }
  fields = document.getElementsByTagName('textarea');
  for(var i in fields) if(fields[i].className=='required')
  {
    if(fields[i].parentNode.parentNode.parentNode.id==form_id && !fields[i].value) ok = false;
  }
  if(ok)
  {
    //document.getElementById('submit_'+form_id).disabled = 'disabled';
    return true;
  }
  alert('You have to fill all the required fields (marked with asterisk).');
  return false;
}

function addMenuHover()
{
  m = document.getElementsByTagName('li');
  for(var i in m) if(m[i].innerHTML && m[i].parentNode.parentNode.id=='header' && m[i].className=='dd')
  {
    id = m[i].id;
    m[i].onmouseover = function()
    {
      document.getElementById('s'+id).style.display = 'block';
    }
    m[i].onmouseout = function()
    {
      document.getElementById('s'+id).style.display = 'none';
    }
  }
}

onload = function()
{
  a = document.getElementsByTagName('a');
  for(var i in a) if(a[i].innerHTML && (a[i].className=='nw' || a[i].className=='photo nw'))
  {
    a[i].target = '_blank';
  }
}

function testEmail(adres) {
     if (adres != "") {
          var re = new RegExp("[^@]{1,}[@]{1}[^@.]{1,}[.]{1}[^@]{1,}","gi");
          var wynik = re.test(adres);
          if (wynik == true) {
               return true;
          }
          if (wynik == false) {
               //window.alert("Nieprawidlowy adres e-mail.");
               return false;
          }}}

function check(t){
 go = false;
 if(t.imiee.value.length==0){
  alert('wpisz Imię i Nazwisko');
 }else if(t.eemail.value.length==0){
  alert('Wpisz e-mail');
 }else if(t.tytul.value.length==0){
  alert('Wybierz tytuł');
  }else if(t.tresc.value.length==0){
  alert('Treść jest pusta');
 }else if(t.imiee.value.length==0 || t.eemail.value.length==0 || t.tytul.value.length==0 || t.tresc.value.length==0){
  alert('Nie wypełniono pól');
  }else if(!testEmail(t.eemail.value)) {go = false; alert('nieprawidlowy adres e-mail');}
  else go = true;
 return(go);
}