Connect with Facebook Code Error

Hi

I have setup connect with Facebook button for my forum, http://www.afghanistanforums.com but some users can connect with it and some of them can't.

I have checked FireFox error console and it says

Error: FB is not defined
Source File: http://www.afghanistanforums.com/fbc/fbconnect.js
Line: 3

Here is the code:

// check wheather there logged into fb and have permissions get errors otherwise if logged in got to connect and register them page else display login form for facebook
function fbLogin() {
   [B](This is line 3: )[/B] FB.Connect.requireSession(function() {
    FB.Connect.showPermissionDialog('email,status_update,read_stream,publish_stream', function()
    {
     document.location = smf_scripturl + '?action=facebook;sa=connect;step';
     });
   });
}

Code (markup):

And

Error: FB is not defined
Source File: http://www.afghanistanforums.com/index.php
Line: 1077

<script type="text/javascript">
[B](Line 1077 )[/B] FB.init("54b596dea11e0b605286d36df17374ab", 
"http://www.afghanistanforums.com/fbc/xd_receiver.htm", 
{"doNotUseCachedConnectState":true });
function doLoggedOutFacebookUser(){
FB.Connect.logout(function(){location.href = "http://www.afghanistanforums.com/index.php?action=logout;sesc=ab2e5be78e1b69ebdce6fbc844edba53";});
}
</script>

Code (markup):

 

Searching for that error message turns up some interesting things. It seems that calls are being made before the script has fully loaded.
It might be due to a loading delay, which some people have fixed by adding a short timeout.
The script might be blocked by the Noscript plugin, so check if it works with Firefox in safe mode.

 

It is not working in safemode.

Here is the complete code:

// check wheather there logged into fb and have permissions get errors otherwise if logged in got to connect and register them page else display login form for facebook
function fbLogin() {
    FB.Connect.requireSession(function() {
    FB.Connect.showPermissionDialog('email,status_update,read_stream,publish_stream', function()
    {
     document.location = smf_scripturl + '?action=facebook;sa=connect;step';
     });
   });
}

// check wheather there logged into fb and have permissions get errors otherwise if logged in got to facebook page else display login form for facebook
function fbLogincheck() {
    FB.Connect.requireSession(function() {
    FB.Connect.showPermissionDialog('email,status_update,read_stream,publish_stream', function()
    {
     document.location = smf_scripturl + '?action=facebook';
     });
   });
}

// check wheather there logged into fb and have permissions get errors otherwise if logged in got to sync page else display login form for facebook
function fbLoginsync() {
    FB.Connect.requireSession(function() {
    FB.Connect.showPermissionDialog('email,status_update,read_stream,publish_stream', function()
    {
     document.location = smf_scripturl + '?action=facebook;sa=sync';
     });
   });
}

// actuly post to facebook 
function callPublish(msg, attachment, action_link) {
  FB.ensureInit(function () {
    FB.Connect.streamPublish('', attachment, action_link);
  });
}

//gets the fabook comment box has tobe done via js to get valid xhtml fb tags are not valid xhtml using js gets aroumd it 
function Get_comments(){
	
	document.getElementById("comments").innerHTML = "<fb:comments xid=" + mod_settings_fb_com_xid + " numposts=" + mod_settings_fb_com_show + "></fb:comments>";
	
}

//gets the fabook fan box has tobe done via js to get valid xhtml fb tags are not valid xhtml using js gets aroumd it 
function Get_fanbox(){		

    document.getElementById("fans").innerHTML = "<fb:fan profile_id=" + mod_settings_fb_app_pageid + " stream=" + mod_settings_fb_app_stream + " connections=" + mod_settings_fb_app_connection + " width=" + mod_settings_fb_app_width + "></fb:fan>";	
	
}

//gets the facebook share button
function Get_share(){
	
	document.getElementById("share").innerHTML = "<span id='facebook'><a name='fb_share' type='button' share_url=" + smf_scripturl + "?topic=" + mod_settings_fb_share + "></a></span>";
	
}

Code (markup):