Question Double Images

When anybody clicks any image in the topic, he observes that image opened twice on the black background. The closing of these double images is also divided into 2 steps

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This sounds like a java script problem. Could it be that your template loads another version or kind of slimbox/lightbox/.... ?

This is best looked at with Firebug inside for Firefox. It shows you the list of all loaded java scripts on your page.

Hope this helps!

Thanks. I've used Firebug and...Slimbox and Shadowbox are active. Which viewer is native for Kunena. And which one I should disable?

Kunena uses slimbox.js

I have had the same problem. Only after disabling the Joomla lightbox plugin, Kunena shows just 1 lightbox but inside Joomla articles lightbox obviously didn't work any more. Tried several plugins, but they all do the same, finaly found Ninja Shadowbox, that works with JQuery, that seems to work.