Can't post Deep links from Affiliate program into 'Article'

Hi

I'm using a 'Deep link generator' from Affiliate Window to create links to products on merchants websites.

This generates a snippet of code that I am supposed to be able to use on my website.

The code is as follows :
<a href="http://www.awin1.com/cread.php?awinmid=2264&awinaffid=130772&clickref=&p=http%3A%2F%2Fwww.ist-track.com%2FProcessBespokeItemClick.ashx%3FcompanyId%3D2E5ADC12-73B1-415D-BF2D-A67908A31FDF%26feedId%3D388C8255-CA58-4295-B993-1D5B964FF24E%26itemName%3DDeepLinkBuilder_!!!sitename!!!%26destinationUrl%3D%2Fphone-accessories%2Fiphone4-accessories%2Fiphone4-shield-protectors%2Fbuy%2FROCKETFISH-IPHONE4-SCREEN-2PCK" onmouseover="self.status='/phone-accessories/iphone4-accessories/iphone4-shield-protectors/buy/ROCKETFISH-IPHONE4-SCREEN-2PCK'; return true;" onmouseout="self.status=''; return true;" target="_top">Carphone Warehouse</a>

I paste it into my 'Article' or 'Basic Page' and click save then the screen just freezes on a white background and the following errer is reported by the browser :

Message: Permission denied
Line: 266
Char: 3
Code: 0
URI: http://www.ch**********ne.co.uk/modules/overlay/overlay-parent.js?v=1.0

Can someone tell me if they have experienced this before, what permissions am I missing here ?

is this possibly something to do with my host ?

I've tried it on 3 different drupal sites using different themes, and on IE, Firefox & Chrome browsers - all freeze at the same point.

Ross