http://tortue-logo.fr is a browser version of the logo language. It is developped in javascript with raphaeljs (server side with python/django but the interpreter is running on the client side).
It only makes possible to play with the turtle but it may be enough to remind you good time learning how to program. :) i think it should cover the main commands of the LOGO language.
Currently french and english are supported. The french version of LOGO is different from the english one (commands are translated in french). SO make sure to choose the right language on the site.
I hope you'll enjoy