Updated the Newsletter Products contribution for osCommerce 2.3. This is a simple html newsletter email that sends an html email with pictures and links to those receiving email. Uses product selection boxes when creating email. Templates can also be used to display the content of the email within the newsletter. Most of the code changes made to existing files are simple sql changes. This version adds a newletter viewer to the catalog side that can display newsletters for those who are having trouble viewing the email for some reason. A link to the viewer for the email newsletter will automatically be included at the bottom of the newsletter text.