Maintaining state while browing HTML pages

[Pro-grammer]

Greetings!
I inherited a project to create an online candy store.

The store owner has 23 HTML pages that look exactly the way he wants them to look, showing graphics, descriptions and ingredients with an "Add to Cart" button.

At present "Add to Cart" works fine when purchasing one item, but the session ID is lost when navigating back to these HTML pages to continue shopping because they do not process the "zenid".

I would appreciate help in determining the best way to resolve this issue. It appears that I could:
1) add some PHP code to my pages to process the zenid and then add the zenid to the "form" tag (I need help in identifying the code required); or,
2) create a very simple template to show these pages that will not add any graphical elements--BUT will maintain the session ID when returning to the shopping cart after browsing these HTML pages (to continue shopping).
3) maybe a better way?

Thanks for your help,
Paul

Server OS: (Windows Server 2003)
Database: MySQL 4.1.12-log
PHP Version: 4.4.1 (Zend: 1.3.0)
HTTP Server: Microsoft-IIS/6.0
Zen Cart 1.2.5
Database Patch Level: 1.2.5

[DrByte]

you'll need to add a hidden field in each form containing the zenid. (The function zen_hide_session_id() builds this.) However, if you didn't get to the page "from" a Zen Cart page, then you won't know the zenid in order to stuff it into a hidden field.

All the more reason to use Zen Cart to build your pages.

Also a good reason to upgrade to a newer version.