function WindowOpen(theURL) { //v2.0
  newWin = window.open(theURL,'subwindow','scrollbars=yes,width=450,height=600' );
  setTimeout("newWin.focus()", 300);
}

<!-- ▼▼マンスリージャック▼▼ -->
function Monthly(theURL) { 
  newWin = window.open(theURL,'popWin','scrollbars=yes,width=470,height=620,status=no');
  setTimeout("newWin.focus()", 300);
}