Help with syntax: Adding pages JS CS3

Question

I'm fairly new to scripting and I'm trying to write a script to add pages, inserting one after each existing page. We're doing postcards using a 4-up data merge. On the back of each card is the data merge/address (again, 4 to a page). Since the merge doesn't work on alternating pages, we want to do the merge first, then add the face pages afterward.
This is my code thus far:
var myPages = app.activeDocument.pages;
var myCounter = myPages.length-1;
for (i = myCounter; i >= 0; i--){
myPages.add(LocationOptions.AFTER)...;
On the line "myPages.add(LocationOptions.AFTER)..." I have tried every combination I can think of based on the CS3 Object Model that comes with Extend Script. Every one except the right one.
Many thanks for you help.
-Tim

Answer 1

Thanks, but I already knew that. This line from the ID Object model:
Pages.add(at:LocationOptions, reference:any, withProperties:Object):Page
would seem to imply that I can specify where to add pages. But I can't figure out how to make use of it.
To further clarify what I'm want to do, using a deck of cards as an analogy: Say I'm starting with all red cards. I want to add a black card after each red so that when I'm finished and you flip thru the deck you alternate between red and black.
-Tim