Hide Price if $0

for osCommerce Online Merchant v2.2

This contribution is intended to hide the price and purchase button from the catalog if no price has been entered, instead of showing a price of $0.00. This may be of use if you want some items to be informational items only, such as services or to use your shop as a catalog only. This contribution contains both the files that can be dropped in on a clean copy of OSC2.2M2 as well as instructions for manually applying this contribution for those who have already tinkered with the original files.