if (window.document.images) {

	menu = new Image();

	menu.src = "img/menu.jpg";

	

	menu1a = new Image();

	menu1a.src = "img/" + lang + "/but_dojazd.jpg";

	menu2a = new Image();

	menu2a.src = "img/" + lang + "/but_kontakt.jpg";

	menu3a = new Image();

	menu3a.src = "img/" + lang + "/but_ofirmie.jpg";

	menu4a = new Image();

	menu4a.src = "img/" + lang + "/but_pytania.jpg";

	menu5a = new Image();

	menu5a.src = "img/" + lang + "/but_technologia.jpg";

	menu6a = new Image();

	menu6a.src = "img/" + lang + "/but_zapytanie.jpg";

	

	menu1b = new Image();

	menu1b.src = "img/" + lang + "/but_dojazd_h.jpg";

	menu2b = new Image();

	menu2b.src = "img/" + lang + "/but_kontakt_h.jpg";

	menu3b = new Image();

	menu3b.src = "img/" + lang + "/but_ofirmie_h.jpg";

	menu4b = new Image();

	menu4b.src = "img/" + lang + "/but_pytania_h.jpg";

	menu5b = new Image();

	menu5b.src = "img/" + lang + "/but_technologia_h.jpg";

	menu6b = new Image();

	menu6b.src = "img/" + lang + "/but_zapytanie_h.jpg";

	

	menub1a = new Image();

	menub1a.src = "img/menu1.jpg";

	menub2a = new Image();

	menub2a.src = "img/menu2.jpg";

	menub3a = new Image();

	menub3a.src = "img/menu3.jpg";

	menub4a = new Image();

	menub4a.src = "img/menu4.jpg";

	menub5a = new Image();

	menub5a.src = "img/menu5.jpg";

	menub6a = new Image();

	menub6a.src = "img/menu6.jpg";

	

	menub1b = new Image();

	menub1b.src = "img/menu1_h.jpg";

	menub2b = new Image();

	menub2b.src = "img/menu2_h.jpg";

	menub3b = new Image();

	menub3b.src = "img/menu3_h.jpg";

	menub4b = new Image();

	menub4b.src = "img/menu4_h.jpg";

	menub5b = new Image();

	menub5b.src = "img/menu5_h.jpg";

	menub6b = new Image();

	menub6b.src = "img/menu6_h.jpg";

}



var popup_w = 600;

var popup_h = 490;

var popup_h2 = 680;

var popup_rzuty_w = 800;

var popup_rzuty_h = 600;



function Change(id, nazwa)

{

  document.getElementById(id).src = nazwa;

}



function WpopUp(URL, w, h) {

  var p_left = ((screen.width / 2) - (w / 2));

  var p_top = ((screen.height / 2) - (h / 2))

  window.open(URL, "Zdjęcie", 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=' + w + ',height=' + h + ',left = ' + p_left + ',top =  ' + p_top);

}



function Pasek()

{

  document.getElementById('pasek').style.height = document.getElementById('tresc').offsetHeight;

}



function KolorujMenu(id, ids, plik) {

  if (id != ids)

  {

	  document.getElementById('menu' + id).src = plik;

	}

}



function ChangeIMG(id, n) {

	document.getElementById(id).src = n;

}



function PageSHOW(id) {

	if (id == 7) {

		document.getElementById('menu' + id).src = "img/menu1_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

	if (id == 8) {

		document.getElementById('menu' + id).src = "img/menu2_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

	if (id == 9) {

		document.getElementById('menu' + id).src = "img/menu3_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

	if (id == 10) {

		document.getElementById('menu' + id).src = "img/menu4_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

	if (id == 11) {

		document.getElementById('menu' + id).src = "img/menu5_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

	if (id == 12) {

		document.getElementById('menu' + id).src = "img/menu6_h.jpg";

		document.getElementById('menu' + id).onmousemove = null;

		document.getElementById('menu' + id).onmouseout = null;

	}

}



function SprawdzEmail()

{

	if (document.getElementById('form_mail').value.search(/^[a-z0-9_.-]+([_\\.-][a-z0-9]+)*@([a-z0-9_\.-]+([\.][a-z]{2,4}))+$/i))

	{

		return false;

	}

	else

	{

		return true;

	}

}



function checkForm() {

	var blad = false;

	

	if (document.getElementById('form_imie').value == '')

	{

		document.getElementById('form_imie').className = "inputboxzle";

		blad = true;

	}

	else

	{

		document.getElementById('form_imie').className = "inputbox";

	}

	

	if (document.getElementById('form_nazwisko').value == '')

	{

		document.getElementById('form_nazwisko').className = "inputboxzle";

		blad = true;

	}

	else

	{

		document.getElementById('form_nazwisko').className = "inputbox";

	}

	

	if (document.getElementById('form_telefon').value == '')

	{

		document.getElementById('form_telefon').className = "inputboxzle";

		blad = true;

	}

	else

	{

		document.getElementById('form_telefon').className = "inputbox";

	}

	

	if (document.getElementById('form_tresc').value == '')

	{

		document.getElementById('form_tresc').className = "inputareazle";

		blad = true;

	}

	else

	{

		document.getElementById('form_tresc').className = "inputarea";

	}

	

	if (blad == true)

	{

    if (lang == 'pl') {

		  alert ("Wypełnij poprawnie wszystkie wymagane pola!");

		}

		if (lang == 'en') {

		  alert ("Fill-in correctly required fields!");

		}

		if (lang == 'de') {

		  alert ("Füllen Sie die erforderlichen Felder richtig aus!");

		}

		return false;

	}

	else

	{

	  if (document.getElementById('form_mail').value == '')

	  {

      document.getElementById('form_mail').className = "inputbox";

		  return true;

		}

		else

	  {

      if (SprawdzEmail() == false)

      {

        document.getElementById('form_mail').className = "inputboxzle";

        if (lang == 'pl') {

    		  alert ("Wpisz poprawny adres email!");

    		}

    		if (lang == 'en') {

    		  alert ('Please, fill-in "e-mail" field correctly');

    		}

    		if (lang == 'de') {

    		  alert ('Füllen Sie das Feld "E-mail" korrekt aus');

    		}

		    return false;

      }

      else 

      {

        document.getElementById('form_mail').className = "inputbox";

        return true;

      }

    }

	}

}