jQuery/Ajax Single page checkout with combined Shopping Cart, Login and Create Account made for osCommerce 2.3.3 Originally made by Advance Software http://www.advancewebsoft.com/ Modified and upgraded (with permission from Advance Software) by Dr. Rolex Original Contribution Features : Full support for ALL OsCommerce shipping modules Standard OsCommerce features like FREE SHIPPING, STOCK CHECK, ALLOW STOCK CHECKOUT are supported Virtual downloadable products are supported Basic Payment modules like Cash on Delivery, Bank Transfer and PayPal are supported Authorize.Net payment module is supported AJAX checkout interface - no more whole page reloading New customers instant registration is available and existing customers will be able to login and checkout Instant shipping and payment modules selection using AJAX Instant delivery and billing address selection and adding a new address is available using AJAX All javascript form validation scripts (creating account, shipping & billing addresses, modules etc) are available Dynamic shopping cart restoration for registered users using AJAX All order total modules from OsCommerce are supported Added Features : Support for and tested on osCommerce 2.3.3 Tested successfully on Google Chrome, Firefox, Safari and Internet Explorer 9 Since the original Add-On was made for the old oSc 2.2 I have made several modification to the code so it will work with newer versions of PHP and of course changed the entire layout to fit in the oSc 2.3.3 grid. Compatible with jQuery 2.0.2 Added so shopping cart is included on checkout - now the customer can add/remove products on checkout and interactively see what the shipping cost will be. Customer must accept Conditions and terms of use when both creating an account and before confirming order. Your Conditions and Terms of use will be dropped down with a very nice Bootstrap modal! Added a comment box similar to the regular one on normal checkout. Added a nice modal that grays out screen on confirming order to prevent double orders from any trigger happy customers with ADHD. Automatic capitalization of first letter when updating Customers Details. Shopping Cart Infobox will update when changing product quantities. Header cart counter refresh Forum Support Link: http://forums.oscommerce.com/topic/393609-jqueryajax-fast-checkoutlogincreate-accountshopping-cartbootstrap-matc-233/