Joomla! Documentation™

Generally, it is a good idea to always add http:// or https:// when providing a URL. There is a Auto add function to prefix a URL with http:// unless it detects the prefix in the URL. NOTE - Use the relative path to a web page address on Joomla installation. If your Joomla! website is http://www.example.com, then use /html_docs/example.html omitting http://www.example.com and make sure the 'Auto add' function is disabled.