Logout from google account. Call a URL in the background/in a hidden way

I need to log out the user from google apps account. Now in my application I want that when the user clicks on LOGOUT the following should happen:

1. he should get logged out from Google apps account - For this I need to send a hidden request to the URL - https://mail.google.com/a/aspiringminds.in/?logout&hl=en I am able to call this url easily. What I need is to call this url in a hidden manner ie the user should not be redirected to this page or see this page. This is the major part where I am stuck. I have tried curl, javascript popup window, iframe, php redirection but nothing seems to work. I think only server side request will help here like 'curl'. Pleaaassseee help !!!!

2. If the user is successfully logged out - I need to take him to this page - sign_in.php?logout=1

I have been trying to do this since the las开发者_开发知识库t 2 days but am unable to do so. Please help.

omg just use jquery like this

$('#logoutlink').click(function(){
    $.get('http://..............');return false;
    };);

that will call the url from client side but will ignore the returned data

Why not just use an iframe of size 1x1 of that url, that way the user won't even realise it.