var obraz=null;
function zvetsi(base,cesta,titul,alt,x,y,jazyk) {
	var sb="no";
	if (x>(screen.width-80)) {
		x=(screen.width-80);
		sb="yes";
	}
	if (y>(screen.height-80)) {
		y=(screen.height-80);
		sb="yes";
	}
	var winl = (screen.width-x)/2;
	var wint = (screen.height-y)/2;
	obraz=window.open(base+"zvetsi_nav.php?nazev="+titul+"&cesta="+cesta+"&alt="+alt+"&jazyk="+jazyk, "obraz", "width="+(x)+", height="+(y)+", top="+wint+", left="+winl+", menubar=no, directories=no, toolbar=no, location=no, status=no, scrollbars="+sb+", resizable=yes");
	obraz.window.focus();
}