Thanks for your help.
So i shold add the code in the item.php template of K2?
Thanks

i have insert in the template and works. Only in firefox it give some problem with pop up
thanks

I opened a comment at bug tracker. It should not make problems with Joomla native caching.

code.google.com/p/getk2/issues/detail?id=583&thanks=583&ts=1371380421

Some new info. When i am logged in print button is shown. So it is for sure problem with this function and Joomla native cache.

How to use it without disabling all Joomla cache ? Problem upon problem, never ending story.

Are you sure it is not a template error?

Can you try viewing it with the system template? (/?template=system) or provide me with a link?

It doesnt work with default templates, get blank page (almost blank, some text only). I need to rearrange positions, menu modules, etc, to get over error, but website is live and i cannot do it.

I will send you a link on PM.

It looks for print.css in my custom template folder, dont know why. Copied CSS code for print class to this CSS file, it didnt helped.

I fixed errors, forgot to move template overrides.

No, it is the same even with two default templates (3.1.1)


A small improvement. When i clean cache in Admin panel, and hard reset browser in print popup window then i get print button. But as soon i move to other Item cache makes problem again.

I cannot expect that visitors will reset browsers in pop up windows, not at all normal behavior.

I believe Peter van Westen explained problem exactly.

www.nonumber.nl/forum/Sliders/11730-How-show-the-content-when-I-print-

Seems like you have a caching problem.
The page with and without the print=1 is cached as the same page.

After clearing your cache, the print page displays correctly, but then the normal page displays as the print page.

So this is not a Sliders issue, but an issue with whatever caches your pages on your site.