It seems that the built-in Joomla 1.5.x caching system breaks the session aware functionality of the Joomla Popin plugin. This is because when a page is render with a pop-in, the source code for that page is stored in cache. Therefore, even with Session Aware ON, you will keep seeing the Popin on that particular page because the contents are cached. One would need to use client-side scripting to check the session variable. As it is, this Popin plugin renders javascript and divs with css styles. Once the page is cached (either with the Popin showing or without) the same thing will shop up after every page refresh until the Joomla com_content cache is cleared.

Well, this is probably something which cannot really be avoided. Using client side scripting to do what you suggest is a bit intrusive in my opinion. One would need to set a cookie, and check for the number of displays ...

Well... you could theoretically modify the joomlapopin.php file to output javascript into the page content which has a java conditional check for the existence of the particular session value. Yes, this is client-side scripting, but the pop-in already requires some scripting.

If I figure out a way around this problem, I'll forward you the solution, but in all honesty, the answer is pretty straight-forward - let the java do the work.

Hmmm... you know how it's possible to disable caching for modules? Is that even possible (or does it even make sense) for plugins?

Also, if developed a component which managed popins, popups, exit-pops, etc. for Joomla, you would make BANK... and probably ruin the internet as we know it today.

Yeah, you could post this in the Feature Requests and hopefully it will be implemented with the next round of updates. Or if you can find a solution, it would be great to share, so thanks for your offer! What I would like to avoid is using a cookie to keep the amount of times the popin has been displayed.

Caching can definetely be disabled for modules, which makes sense, not sure whether this can be done for plugins though. Would have to ask at the Joomla forums.

Well, although we have developed this popin (upon client requests) we are not very much in favour of intrusive advertising. Although the component you is probably a good money making stream, and we don't want to be responsible for ruining the Internet