Document-level Javascript as Object

Question

I created a document level script called Utility.
I want to create methods within this script rather than coding each one separately.
function Utility()
this.getFormattedDateOnly=function(pDate) {
  if (typeof pDate == "undefined") {
    pDate = new Date();
  var retval = util.printd("m/dd/yyyy",pDate);
  return retval;
this.getFldsOnPagenum = function(pPageNum, pDoc) {
  /* returns an array of the form fields who are on or start on a page */
  /* zero based return ; however pPageNum is 1 thru numPages, not 0 -> numPages-1 */
  var currPage;
  var currFld;
  var cnt = -1;
  var ARflds = [];
CPR("# flds=" + pDoc.numFields+" Type of pDoc:"+ (typeof pDoc));
  for (var i = 0; i < pDoc.numFields; i++) {
    currFld = pDoc.getNthFieldName(i);
    if (typeof currFld.page == "number") {
CPR("page="+(1*currFld.page+1));
      if ((1*currFld.page+1) == pPageNum) {
        cnt++;
        ARflds.length = cnt + 1;
        ARflds[cnt] = currFld;
CPR("\n cnt="+cnt);
    } else if ((1*currFld.page[0]+1) == pPageNum) {
      cnt++;
      ARflds.length = cnt + 1;
      ARflds[cnt] = currFld;
  return ARflds;
var MyUtil = new Utility();
This is all working fine with the following exceptions:
1) the methods are not being registered in the Javascript hierarchy listing.
That's annoying.
2) "This" is not recognized at the document level....I must pass it as a parameter (pDoc).
I thought that was strange...I could see it if were at the folder level.
It appears the document object is out-of-scope !!
3) currFld = pDoc.getNthFieldName(i);
The above is failing....sending back a "currFld is undefined" error.
I don't see the problem....very strange IMHO.
When I call the getNthFieldName function from the console....no problem.
What am I doing wrong in the definition here ?
It appears that what I did has Acrobat functions and document properties out-of-scope.

Answer 1

I think this would work if you could make the document object a member of the Object being created.
To do that, a constructor needs to be invoked so that it can instantiate a public property of the Object.
var MyUtil = new Utility(this);
inside of Utility I would have:
this.oPDFdoc =  this;
thereby transferring a reference to the entire PDF document to my Object.
Getting this to work would eliminate the need for all of the document-level javascript references.