Build a zencart product listing toggle button for showing column vs row in category and manufacturer listing. It should work on version 1.3.8 and 1.5
The toggle state must be kept in a non expiring cookie, so that when client navigate to another category it keeps its preference in product viewing (either columns or rows)
The way this is built must not affect my plugin of seo urls, so its preferable this is done with ajax calls. (if possible)
I will specify the design of the output.