Convert Existing Shopphing Cart to Ajax Based

- ecommerce is a custom application and using CodeIgniter 2.x framework - deployment using subversion - catalog and product detail pages for public are using CI page output cache - www . pusat kosmetik . com A. Convert existing shopping cart to be ajax based - so that users don't have to get redirected to another page and can just continuing shopping from where they left off - reference: lazada .co .id B. Block Spam comment/review - current comment get spammed all the time - allowed to post: member and guest users (no need to login) - don't use captcha - comment/review shown in product detail page which is cached, so it will need some ajax solution Requirement - will need experiences in Code Igniter - familiarity with shopping cart flow - there will be more jobs to come :)