You can find a full explanation and examples on the Demo page
Modals will only work correctly if your setup meets these requirements:
Important: I can only provide support for setups that:
You can either install Modals by using the core extension manager available in the Joomla! Administrator Control Panel, or by using the powerful NoNumber Extension Manager.
Note: When updating Modals, you do not need to uninstall it first. The package will
update all the files automatically.
Keep in mind that when you update to a major new version (or uninstall first), you might lose some configuration settings.
It is very easy to install/update any NoNumber Extension using the NoNumber Extension Manager.
Please see the User Guide for the NoNumber Extension Manager for more detailed information...
To install via the Joomla! Extension Manager, just follow these steps (based on Joomla 2.5 setup):
If you have problems installing Modals, please try the manual installation process as described here: docs.joomla.org/Installing_an_extension
You can either uninstall Modals by using the core extension manager available in the Joomla! Administrator Control Panel, or by using the powerful NoNumber Extension Manager.
If you no longer use any NoNumber extensions, you can also uninstall the NoNumber Framework plugin by using the Joomla! core extension manager.