how to hide tab (custom field in wordpress) when content is empty. you can see here on product page at bottom are 4 tabs. thanks http://projects.qbf.ie/rspl/shop/adpro-intrusiontrace-plus-video-analytics-software-for-intelligent-perimeter-detection/
that is a simple but very informative post you have there. All I can say is thank you and may you have a nice time