Allow user to password protect a form

Question

I have created a form that asks if the user wants to insert a password - a basic text field. If the password field is empty, then the form opens. If the password exists, then the user is asked for a password - if correct, the form opens for editing, otherwise the form closes.
On the form is a text field called "PWD". The form is called "coal". The script in the Document level is:
var pw = this.getField("PWD");
if (pw == "") {
app.openDoc({cPath: "coal.pdf", oDoc: this});
} else {
     var cRtn = app.response("Please Enter Password:", "Document Control Only");
     if (cRtn != pw){
     app.alert("Incorrect password entered");
     this.closeDoc(true);
     if (cRtn == pw){
     app.openDoc({cPath: "coal.pdf", oDoc: this});
However, this does not behave as I want - anyone know what I have wrong (Damn, I wish I knew more). BTW - I have a Livecycle version that works perfectly, but I need the solution for both.

Answer 1

I think I should restate the need. I have many thousands of forms, and many thousands of customers. Most of them do not need the form protected or hidden, so the first step in this is to open the blank form without a challenge - just open.
Second step is to offer them a field to put in a password if they want it.
So the form needs to check if the password field is completed - if not, simply open. If yes, then ask for the password - if matched, open form. If not, close form.
Is the javasript issue overcome if I change the functionality to Formcalc?