html - Linking to a external Url - currently unsuccesful -

when try link ext url such www.facebook.com comes -

mysite.com/music/www.facebook.com 

its linked: <a href="www.facebook.com></a> link internal urls <a href=./index.html> etc etc

any suggestions on how make work?

i assume you're talking in html. need full url, e.g. http://www.example.com, not www.example.com.