[question in AJAX]

here is the page:

 

http://www.vitawealth.com/cart/cart.php?addproduct=57&site=vw

 

it currently features that shipping calculator beneath the form.

i want to insert it above the outcome price report, inside the form.

but it doesn't work, because that will be form inside form. this is why i thought about ajax, thou I have no idea how to manifest it.

[question in AJAX]

I've got a shopping cart page,

 

and I want to add inside the cart form (in which you can remove items, edit quantitiy or check out) a field where one can enter a state and zip code and by that a shipping cost line is added in a table that prints the total price, near the end of the form.

 

I understood that you cannot do form inside a form, and perhaps needs to do it in ajax... can somebody guide me how to do it?

 

thanks,

-Itay