function uppict(adresa,jmeno,x,y) {
	var vyska = screen.height;
	var sirka = screen.width;

	var leva = (sirka - x)/2;
	var vrch = (vyska - y)/2;
	window.open(adresa,jmeno,"width="+x+",height="+y+",left="+leva+",top="+vrch+",scrollbars=no,location=no,toolbar=no,menubar=no,directories=no,");
}