function update_user_box(){
							var user_box = document.getElementById("user");				
								
							user_box.innerHTML = "<fb:comments></fb:comments>";	

							FB.XFBML.Host.parseDomTree();
												
						}


	var firstTime = true;					
	
	FB.init("03ca6867ca951e528ea73a7b3b904b6f","../../xd_receiver.html", 
				{"ifUserConnected":
						function(user_id){
							firstTime = false;
						},
			 	  "ifUserNotConnected":
						function() { 
							if (!firstTime) 
								window.location = document.location.href; 
						}
				}
			);

	/*  in FB.init u have to set the new API Key which u get when create new application in FB */