function fixedPicWindow(url, w, h)
{
  wnd = window.open(url, "Nahled", "width="+(w+16)+",height="+(h+16)+",toolbar=no,directories=no,scrollbars=no");
  wnd.focus();
}

function OpenPicWindow(REL_PATH, w,h,pic)
{
  wnd = window.open(REL_PATH+'pic.php?pic='+pic, 'Detail', 'width='+(w+16)+',height='+(h+16)+',toolbar=no,directories=no');
}

function checkOrderForm()
{
  with(document.forms[3])
  {
    if(first_name.value == "") {
      alert("Zadejte Vaše jméno");
      first_name.focus();
      return false;
    }
    if(last_name.value == "") {
      alert("Zadejte Vaše příjmení");
      last_name.focus();
      return false;
    }
    if(address.value == "") {
      alert("Zadejte Vaši adresu");
      address.focus();
      return false;
    }
    if(city.value == "") {
      alert("Zadejte město");
      city.focus();
      return false;
    }
    if(zip.value == "") {
      alert("Zadejte PSČ");
      zip.focus();
      return false;
    }
    if(phone.value == "" && email.value == "") {
      alert("Zadejte buď Váš telefon nebo e-mail");
      phone.focus();
      return false;
    }
  }
  return true;
}