Thanks for the info Jason
I took your idea and simplified it somewhat.
The cart now has 'Save Cart' and 'Load Cart' buttons that save the customers cart for future use.
It all seems to be working fine. Except for one customer who now has a problem that when she loads up a previously saved cart it all display fine but she then can't amend it in any way i.e. try changing the quantity of of a product or to remove one product entirely from the cart.
I've logged into the site with this customers details and it does the same thing with me - it won't let me amend the loaded cart. I've now discovered it does do it with some other customers too.
The carts it seems to do it on are ones where lots of items have been saved, the last one I found had over 40 products saved. If a customer only has a handful of products saved it will amend / add / delete all fine.
Does any one know how to solve this issue.
Also this may be related or unrelated but when I now open the shopping cart page in Dreamweaver I get an error message when it first opens...
'The A WA eCart 01Object script does not define the findServerBehaviours function.'
Is this the reason for the problem?
Many Thanks in advance