How to enable the image previewer in all product detail page

Hi All

All I need to add the {include file=“common_templates/previewer.tpl”} to all the detail product views. When I checked the tpl code I can see the above has been included but doesn’t work. Is their any setting that I need to change? or any modification required in the db or tpl



add class=“cm-thumbnails” to needed elements

if i’m guessing correctly where you heading.