aspect cart changed chosen code codes countries country don event help ignore java key method modified modify onchange postal price redirect refresh require requires robert script selection shipping system tax update user users zip

Hi, I'd like to ignore my zip code for user to update their shipping price..
I don't require users to key in the zip code. And I want to refresh the cart when it is changed, regardless of the country chosen.
what can I do?

I was thinking to redirect the onchange event (of the country selection) to a modified java script method, but I don't know how to do it. Anyone can help?

Thanks!
Robert

Sorry, if you are using shipping or tax our cart requires a postal code for those countries with postal codes and there is not a way to modify that aspect of our system.