Facebook Login not open in Safari/ iPhone

Question

I am creating one application which show Facebook friend. First, user need to click on login button then one simple popup screen will appear after filling login id and password it will show friend list.
Everything ok and run on Firefox, Chrome,IE but it will not open popup in Safari and iPhone.
someone suggest me add domain name and channel name in channelUrl. I create one channel.html and add reference but it didn't help me.
I search lot's but didn't find helpful.

Here is my code.
Custom.js

function getUser()
{
FB.init({
    appId      : '289403314507596', // App ID
    channelUrl : 'http://bc2-236-161.compute-1.amazonaws.com/html/channel.html', // Channel File
    status     : true, // check login status
    cookie     : true, // enable cookies to allow the server to access the session
    xfbml      : true  // parse XFBML
});

 (function(d){
 var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
 if (d.getElementById(id)) {return;}
 js = d.createElement('script'); js.id = id; js.async = true;
 js.src = "//connect.facebook.net/en_US/all.js";
 ref.parentNode.insertBefore(js, ref);
 }(document));

//check current user login status
FB.getLoginStatus(function(response) {
    if (response.status === 'connected') {
        window.location="facebook_friend.html"
        loadFriends();
    } else {
        //user is not connected.
        FB.login(function(response) {
            if (response.authResponse) {
                window.location="facebook_friend.html"
                loadFriends();
            } else {
                alert('User cancelled login or did not fully authorize.');
            }
        });
    }
 });
 }
//start from here
 $(document).ready(function(){
$('.load-button').click(function(){
    getUser();
});
});   

channel.html

<script src="//connect.facebook.net/en_US/all.js"></script>// i add this line in channel.html

refer_friend.html
I add reference of custom.js in this file

 <div id="fb-root"></div>
   <script src="http://connect.facebook.net/en_US/all.js"></script>
   <img src="includes/fb-btn1.png" class="load-button" style="
    width: 290px;
    Height: 40px;
    margin-top: 5px;"/>

Answer 1

Ok... After wasting my full day i got a answer. Using Javascript_Facebook Sdk, when you click on Login button, it will open popup window. And in Safari or iPhone(mine), i enable Block-popup option.
Therefore i am not able to see Facebook login window. you need to allow pop-up window.
You can allow pop-up by clicking on

Safari-disable Block pop-up windows  

or

 safari-preference-then disable checkbox of pop-up window's    

or You can use a keyboard shortcut:

shift-[command key]-K.

cheers.