OK since I seem to be reaching a dead end as far as MODx/mootools my brain suddenly had a flash of insperation along the following line.
1) This project is using facebook connect and MODx
2) Does facebook have an AJAX framework
3) If so why not use that.
A quick search and I now feel like a complete fool for wasting some where in the region of 5 hours of my spear time trying to get this to work when I should have thought about this before.
Don’t have time to test tonight but will try in morning.
Thanks for all your suggestions.
Quote from: Bogdan at Feb 06, 2009, 06:01 PM
Sure, sometimes you need to take what’s already there 
I have done a small AJAX thing with Mootools 1.11 myself a while a go, maybe the source is of some help for you:
JavaScript:
var xhrURL="get_xhr.php";
var xhrQuerystring="inputField="+inputID;
// Daten senden
var xhrHandle=new XHR(
{
method: 'post'
}).send(xhrURL, xhrQuerystring);
In the PHP part get_xhr.php you can just get the transmitted querystring like usual:
$inputField=$_POST['inputField'];
For more information and options there are also the docs for 1.11 around:
http://docs111.mootools.net/Remote/XHR.js
Thanks for that will look at both in morning.