Using image pop ups is another way of making our site interesting, and is very common these days. You can see this effect in almost every site. So our site is not going to be lighter on effects than others; we are going to incorporate image pop ups, and in an easy way as you will see.
First we are going to download the module from http://extensions.joomla.org/extensions/multimedia/multimedia-display/4577.
You can also search the JED for "Ninja ShadowBox". Once we have
downloaded the file, we can install it, as always, by navigating to Extensions | Install/Uninstall. In the field where it
says Package File you will click on Select file. In my installation, the file is
mod_ninja_shadowbox-2.0.9.zip. Select the file and click ...