function btn_ov(btn){
		if (!btn.disabled) btn.className = "btn-ovr";
	}

	function btn_ou(btn){
		if (!btn.disabled) btn.className = "btn";
	}

	function gallery(obrazek){
		window.open("image.php?inwin=true&objekt="+obrazek,"open_gallery"+obrazek,"menubar=no,directories=no,toolbar=no,location=no,status=no,scrollbars=yes,resizable=no,width=150,height=150");
		return false;
	}