Here is a great site with a ton of handy tools for your Joomla website. Not least of which is the cookie law directive http://www.richeyweb.com/development/joomla-plugins/111-system-eu-e-privacy-directive plugin.
Go here and find other stuff and make sure to send him a donation to keep his work going. This is a great Joomla Resource for you to bookmark and link to.