Joomla path and URL for subdir installation

Does anyone know how can I get the path and URL of the Jo开发者_如何转开发omla installation relative to the document root and site domain? I am looking for the Wordpress correspondent of WP_CONTENT_DIR and WP_CONTENT_URL.

Thanks all, Bogdan

I managed to find that part of the URL using this piece of code: $installation_dir_in_url = substr(str_replace(DS, '/', JPATH_SITE), strlen($_SERVER['DOCUMENT_ROOT']));

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Is this what you need:

 JURI::base()

Also check this Joomla documentations out http://docs.joomla.org/JURI