function okno(w,h,obj) {
  b="'navigation=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0, resizable=0, top=25, left=50, width="+w+", height="+h+"'"; 
	ok=window.open(obj, 'okno', b);
	ok.focus();
}