For Joomla 3.0, 2.5, 1.7, 1.6, and 1.5 versions.
As you can see on your righ site.
Joomla Google+ badges or widgets are a excelent way to connect your website with your Google+ pages.
Picture: Settings for Joomla 2.5, 1.7, and 1.6
Integration of Joomla Google Page Module is quite simple and exact same as you would set it directly on Google+.