In distinguishing your Joomla! template from others, there are a number of extensions for Joomla! to help you, including one that allows you to display a random image as your template's background image for the
You need to install the extension called Random Background. You can find the file's download link on the Joomla! website at http://extensions.joomla.org/extensions/style-a-design/templating/6054. Once you have saved the extension files somewhere on your computer, log in to your website's Joomla! administration panel (if Joomla! is installed at
example.com, the administration panel is typically accessible at
example.com/administrator), and select the Install/Uninstall ...