test.js

function loadDocument(Document) {
  TXDocumentViewer.loadDocument(Document.documentData, Document.documentName);
}

var documentLoading;

function loadInitialDocument(Document) {

  documentLoading = true;

  window.addEventListener("documentViewerLoaded", function () {
    
    if (documentLoading === true)
      loadDocument(Document);

    documentLoading = false;

  });
}