function newWin(nazev, frame, width, height) {
	var x = (screen.availWidth-width)/2;
	var y = (screen.availHeight-height)/2;
	var v = (screen.availHeight);
	var scroll = 0;
	if (height > v) {
		scroll = 1;
		height = screen.availHeight-28;
		y = (screen.availHeight-28-height)/2;
		width = width + 16;
	}
	var popupWin = window.open(nazev, frame, 'scrollbars='+scroll+',resizable=0,top=0,left=0,menubar=0,status=0,width='+width+',height='+height+',left='+x+',top='+y);
	popupWin.focus();
}