Need ideas on how to display a footer on last page only on a dynamic document

Question

I have a document that is similar to this...
Dear Customer,
paragraph 1 content dkdk dkd alkfdjaldkjfa d
dlkfajd;lkfja;dlkfj a.
[repeating subform transaction data]
Closing paragraph please contact us using one of the numbers listed below
contact info
The problem I am having is that I want the Contact Info block to appear as a footer on the last page only.  In addition, I want the Closing Paragraph to be on the same page as the contact info block.  The contact info is currently anchored to the bottom in the design view and when the transaction data repeats, it incorrectly pushes the closing paragraph into the contact area.  So basically if the closing paragraph starts to bleed into the contact info block, I want both closing paragraph and contact info to break to a new page.  I don't want to reduce the height of the content area because I want the transaction data to have the ability to display in the full length of the height if needed. 

Answer 1

Every time you add an instance to you subform, you should hide the footer in the previous instance
e.g.
when adding an instance
var intCount = _subform.count;
_subform.addInstance(1);
Reference_syntax.resolveNode("subform[" + intCount.toString() + "].footer").presence = "hidden"
when removing an instance if applicable
_subform.removeInstance(x);
var intCount  = _subform.count - 1;
Reference_syntax.resolveNode("subform[" + intCount.toString() + "].footer").presence = "visible";