MVS Shipping Cost Estimator

[michael_s]

This is an extensively updated version of the MVS Shipping Estimator. It's no longer just MVS, either -- this code works with stock MS2 stores as well. Changes include:

1. Added form and popup for shipping estimates from the product pages.
2. Used session variables to save entered values for the customer's next quote.
3. Fixed security vulnerability with global variables.
4. Removed unnecessary code (there was a lot of this.)
5. Rewrote portions of the code to better separate code and presentation.

Please post support questions in the MVS forum thread: http://forums.oscommerce.com/index.php?showtopic=101973

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