var okno = null;function PokazSzczegoly(numer,kolekcja){  borderless = true;  width = 800;  height = 580;  ScrWidth = 640;  ScrHeight = 480;  if(window.screen)  {    ScrWidth = window.screen.width; 	ScrHeight = window.screen.height;  }  PosX = Math.round((ScrWidth - width) / 2);  PosY = Math.round((ScrHeight - height) / 2);    if(okno != null && !document.layers)  {    okno.close();  }  if(borderless && !document.layers)  {	okno = window.open("pokaz_szczegoly.php?id=" + numer + "&id_kol=" + kolekcja + "", "produkt", "fullscreen=0, toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=no, resizable=0");	okno.resizeTo(w, s);	okno.moveTo(PosX, PosY);  }  else  {	okno = window.open("pokaz_szczegoly.php?id=" + numer + "&id_kol=" + kolekcja + "", "produkt", "menubar=no, toolbar=no, location=no, directories=no, status=no, scrollbars=no, resizable=no, copyhistory=no, width=" + width + ", height=" + height + ", left=" + PosX + ", top=" + PosY);  }  okno.focus()}