login - Facebook javascript/ fbconnect ifuserconnected causing problems -

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well i'm reading fb connect tutorial here

http://wiki.developers.facebook.com/index.php/facebook_connect_tutorial1

the problem i'm having near end of tutorial, it's saying do 

<script type="text/javascript">  fb.init("apikey","xd_receiver.htm", {"ifuserconnected" : update_fbuser}); </script>

as oppose 

<script type="text/javascript">  fb.init("apikey","xd_receiver.htm"); </script>

now problem is, when use first one, login facebook button have stops showing, notice wrong first one, second 1 works fine (just doesnt use ifuserconnected)

thanks :)

first of looking @ old api deprecated. if starting better start current one. can read here.

as code. need declare callback function update_fbuser() called when user login status changes. don't have breaks. can find more examples here (but again old api, things different).


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