From Facebook Developer Wiki

It doesn't work!!!

Seconded. It doesn't return false. It returns TRUE and reloads the page.

[edit] FBJS/Examples/Hello World .. Doesn't work.

 Hi there.

 Tried the php "my first facebook app" tutorial at: http://wiki.developers.facebook.com/index.php/Creating_your_first_application, then replaced index.php with index.js / index.html containing code above.  I get an HTTP error code 405: The requested method GET is not allowed for the URL /<my apps url>/index.js.

This code doesnt work for me also :(

http://forum.developers.facebook.com/viewtopic.php?pid=161614#p161614