Based on osCommerce version 2.2-MS1
Copyright (c) 2003 osCommerce
MAX ORDER - version 1.00
2003/04/27 JOHNSON - Copyright (c) 2003 Matti Ressler - email@example.com
This simple mod is a variation on Minimum price to order V1.7 by Joachim de Boer.
It sets a credit limit on a per order/customer basis.It is compliant with multiple
currencies, and each customer's credit limit can be set using the admin>customers
module. The default limit is set in the max_order.sql file. You may change this
before you execute the file or change it directly in the database - there is no
provision for changing the default setting through the admin interface at this stage.
HOW IT WORKS
The customers credit limit is checked at log on and again when they click the checkout
button. If the cart total exceeds their credit limit they are redirected to a page
displaying how much above their credit limit the order is, with a link to the contact_us
page. The limit is checked before shipping is calculated.