This is my code where i am opening a popup window

function playSong(song) {
var str = thisfile + "?action=song&id=" + song;
var id = "player";
eval("page" + id + " = window.open('" + str + "', '" + id + "', 'toolbar=no,scrollbars=no,location=no,statusbar=yes,menubar=no,resizable=no,width=468,height=250,left = 362,top = 234');");
}

Now when i click on the link playSong i wanted to open 2 frames,in the first frame i will keep

eval("page" + id + " = window.open('" + str + "', '" + id + "', 'toolbar=no,scrollbars=no,location=no,statusbar=yes,menubar=no,resizable=no,width=468,height=250,left = 362,top = 234');");
}

How do i create 2nd frame ?