function sbal(id)
{
			if (document.getElementById(id).className=="arr-up")
			{document.getElementById(id).className="arr-down";
			 document.getElementById(id+"_skryt").style.display= "none";
			 }
			else
			{document.getElementById(id).className="arr-up";
			 document.getElementById(id+"_skryt").style.display= "block";
			}
	return false;
}

function Otevri_okno() {
msg = window.open('','galerie','width=580,height=425,toolbar=no,menubar=no,location=no,directories=no,scrollbars=no,resizable=no,dependend=yes,allwaysRaised=yes') 
}