FB share to reveal discount code

<script type='text/javascript' src='http://code.jquery.com/jquery-1.9.1.js'></script>

<style type="text/css">
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        -moz-box-shadow:inset 0px 5px 14px -7px #276873;
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        background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #599bb3), color-stop(1, #408c99));
        background:-moz-linear-gradient(top, #599bb3 5%, #408c99 100%);
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    .lnkstyle:active {
        position:relative;
        top:1px;
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    .cpncode {

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  </style>

<div id="fb-root"></div>

<script type="text/javascript">
$(document).ready(function() {

    window.fbAsyncInit = function() {
 FB.init({
          appId      : 'MY_APP_ID',
          status     : false,
          xfbml      : false,
          logging    : false                                    
        });

        $('#ShareForcouponcode').on('click',function(e) {
            e.preventDefault();
            FB.ui(
             {
               method: 'feed',
               name: 'Title',
               link: 'https://www.facebook.com'
             },
             function(response) {
               if (response && response.post_id) {
                 // the download link will be activated
               $('#ShareForcouponcode').fadeOut();    
               $('#couponcode').fadeIn();
               } else {
                 // do nothing or ask the user to share it
               }
             }
            );      
        }); 
    };

});

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(function(d, s, id){
   var js, fjs = d.getElementsByTagName(s)[0];
   if (d.getElementById(id)) {return;}
   js = d.createElement(s); js.id = id;
  js.src = "http://connect.facebook.net/en_GB/sdk.js#xfbml=1&appId=MY_APP_ID&version=v2.0";
   fjs.parentNode.insertBefore(js, fjs);
 }(document, 'script', 'facebook-jssdk'));
</script>
<script src="http://connect.facebook.net/en_US/all.js"></script>

<div>
 <a id="ShareForcouponcode" class="lnkstyle">Share this to get discount code</a>
</div>

<div id="couponcode" style="display:none;">
Your discount code here.
</div>