function ChangeMenu(page)
{	
  switch(page)
  {
    case 'index':
	  frames['tresc'].location.href = 'include/strona_glowna.php';
	  break;
  	case 'polozenie':
	  frames['tresc'].location.href = 'include/polozenie.php';
	  break;
	case 'pokoje':
	  frames['tresc'].location.href = 'include/pokoje.php';
	  break;
	case 'kuchnia':
	  frames['tresc'].location.href = 'include/kuchnia.php';
	  break;
	case 'kontakt':
	  frames['tresc'].location.href = 'include/kontakt.php';
	  break;
    case 'referencje':
	  frames['tresc'].location.href = 'include/referencje.php';
	  break;
    case 'do_dyspozycji':
	  frames['tresc'].location.href = 'include/do_dyspozycji.php';
	  break;
	case 'danie_tygodnia':
	  frames['tresc'].location.href = 'include/danie_tygodnia.php';
	  break;
  }
}