function wyswietlWRamkach(url1, url2) {
    parent.nazwaInnejRamki.location.href = url1;
    location.href = url2;
    return false;
}



<a href="content12.html" target="zawartosc" onclick="return 
wyswietlWRamkach('content12.html', 'navbar12.html')">...</a>

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<a href="frameset12.html" target="_top" onclick="return 
wyswietlWRamkach('content12.html', 'navbar12.html')">...</a>
