function PodmianaOkienka(URL1,banerek,URL2,zawartosc)
   {  
    parent.frames[banerek].location.href=URL1;
    parent.frames[zawartosc].location.href=URL2;
   }

function DwaOknaWstecz (banerek, zawartosc) {
  Frame2 = parent[zawartosc];
  parent[banerek].history.back();
  if (!window.opera)
    window.setTimeout("Frame2.history.back()", 100);
}

function DwaOknaPrzod (banerek, zawartosc) {
  Frame2 = parent[zawartosc];
  parent[banerek].history.forward();
  if (!window.opera)
    window.setTimeout("Frame2.history.forward()", 100);
}