Função para colocar o doc. pai em modo de leitura.

function LeituraDocPai(){
var f = window.opener.document.forms;
if(!f.elements){
var currHref = (window.opener.document.location.href);
var newHref = currHref.substring(0, currHref.indexOf("?"))+"?OpenDocument";
window.opener.location.href = newHref;
}
}