// Funkce pro otevírání okna s hotelovou kartou
function ShowHotelCard(idCard){
	// Zjistí rozlišení monitoru (velikost obrazovky)
	var Browser = navigator.appName;
	var Version = parseInt(navigator.appVersion);
	if ((Browser == "Netscape" & Version >= 4) ||
		(Browser == "Microsoft Internet Explorer" & Version >= 4)){
	  ScrH = screen.height;
	  ScrW = screen.width;
	} else {
	  ScrH = 0;
	  ScrW = 0;
	}

	var Position;
	if ((ScrH > 0) && (ScrW > 0))
	  Position = ",left="+(ScrW - 500)/2+",top="+(ScrH - 635)/2;
	else
	  Position = "";

	// Vytvoření nového okna
	if (idCard > 0) {
		var NewWin = window.open("hotelcard.php?id_card="+idCard, "_blank",
			"toolbar=no,location=no,width=500,height=335,directories=no,status=no,menubar=no,resizable=no,scrollbars=no"+Position);
	}
	else {
		var NewWin = window.open("hotelcard.php", "_blank",
			"toolbar=no,location=no,width=500,height=335,directories=no,status=no,menubar=no,resizable=no,scrollbars=no"+Position);
	}
}