Facebook check in and windows phone - windows-phone-7

Question

I've got a script that essentially gives the user the ability to check in to a specific location when they click it. Upon clicking it, it checks them into the same location each time.
On desktop this works fine and I suspect it works on Android too. I have a WP and thus obviously I want to get it working on there. This feature is pretty much going to be used exclusively on mobile so getting it working cross-device is important.
Now, to the actual issue. Upon clicking the check in button on WP it loads a blank page and hangs there. Whilst this may be a signal that it perhaps has checked in, when I look it hasn't. So it's hanging there and doing nothing.
This is the URL it's hanging on: https://m.facebook.com/dialog/oauth?display=touch&domain=www.staffscuesociety.com&scope=publish_stream&api_key=API_KEY&app_id=APP_ID&locale=en_US&sdk=joey&access_token=ACCESS_TOKEN&client_id=CLIENT_ID&redirect_uri=http%3A%2F%2Fstatic.ak.facebook.com%2Fconnect%2Fxd_arbiter.php%3Fversion%3D18%23cb%3Df35fef827217048%26origin%3Dhttp%253A%252F%252Fwww.staffscuesociety.com%252Ff166245837c3b6e%26domain%3Dwww.staffscuesociety.com%26relation%3Dopener%26frame%3Df398a7113310e64&origin=2&response_type=token%2Csigned_request
and this is the code:
var button;
(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));
window.fbAsyncInit = function() {
FB.init({
appId : '260445377421174',
channelUrl : '//www.staffscuesociety.com/checkin/channel.html'
});
button = document.getElementById('checkinWidget');
if (!button) return;
if (!getPost()) {
allowCheckin();
} else {
allowUndo();
}
};
function setPost(value) {
var d = new Date();
d.setDate(d.getTime() + (10 * 60 * 1000));
document.cookie = 'post=' + escape(value) + ';expires=' + d.toUTCString();
}
function getPost() {
return getCookie('post');
}
function getCookie(key) {
currentcookie = document.cookie;
if (currentcookie.length > 0) {
firstidx = currentcookie.indexOf(key + '=');
if (firstidx != -1) {
firstidx = firstidx + key.length + 1;
lastidx = currentcookie.indexOf(';', firstidx);
if (lastidx == -1) {
lastidx = currentcookie.length;
}
return unescape(currentcookie.substring(firstidx, lastidx));
}
}
return '';
}
function checkin() {
allowNothing();
FB.login(function(response) {
if (response.authResponse) {
FB.api('/me/permissions', function (permissions) {
if (permissions.data.length > 0 && permissions.data[0].publish_stream) {
FB.api('/me/feed', 'post', { message: null, place: '117072761683514' }, function(post) {
if (!post || post.error) {
showError();
} else {
setPost(post.id);
allowUndo();
}
});
} else {
allowCheckin();
}
});
} else {
allowCheckin();
}
}, {scope : 'publish_stream'});
}
function undo() {
allowNothing();
FB.api('/' + getPost(), 'delete', function(response) {
setPost('');
allowCheckin();
});
}
function allowNothing() {
button.onclick = function() { };
button.className = 'pressed';
}
function allowCheckin() {
button.onclick = checkin;
button.className = '';
}
function allowUndo() {
button.onclick = undo;
button.className = 'pressed tick';
}
function showError() {
button.className = 'pressed error';
}
}