Prueba ésto:
pagina1.htm
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<a href="#" onclick="window.open('pop_up1.htm','Nueva_Ventana' )">Abrir Pop Up</a>
pop_up.htm
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<a href="#" onclick="opener.location.href = 'link1.htm'">Link 1</a>
<a href="#" onclick="opener.location.href = 'link2.htm'">Link 2</a>
<a href="#" onclick="opener.location.href = 'link3.htm'">Link 3</a>