easy way to get the top level domain?
<p>i want to get the domain extention (at least i hope it is called this way) from the site name the user is currently on.</p>

<p>so from www.bbc.co.uk it's co.uk and
www.google.com = .com
<a href="http://stackoverflow.com/questions/ask">http://stackoverflow.com/questions/ask</a> = .com</p>

<p>etc.</p>

<p>especially the ones with the double name (like co.uk) gives me headaches....</p>

<p>EDIT
as i understand from the comments, co.uk is not a top level domain? that makes life easier!
EDIT 
new name (top level domain) in the title</p>
