ajax - Access-Control-Allow-Origin error sending a jQuery Post to Google API's

itemprop="text">

I read a lot for the
'Access-Control-Allow-Origin' error, but I don't understand what I have to fix
:(

I'm playing with Google Moderator API, but
when I try to href="http://code.google.com/apis/moderator/v1/using_rest.html#CreatingSeries"
rel="noreferrer">add new serie I
receive:

XMLHttpRequest cannot
            load
            
https://www.googleapis.com/moderator/v1/series?key=[key]
&data%5Bdescription%5D=Share+and+rank+tips+for+eating+healthily+on+the+cheaps!
&data%5Bname%5D=Eating+Healthy+%26+Cheap
&data%5BvideoSubmissionAllowed%5D=false.
            
Origin [my_domain] is not allowed by
            Access-Control-Allow-Origin.

I
tried with and without callback parameter, I tried to add 'Access-Control-Allow-Origin
*' to the header. And I don't know how to use $.getJSON here, if apply, because I have
to add the Authorization header and I don't know how to do it without beforeCall from
$.ajax :/

Any light for this darkness
u.u?

That's the
code:

            src="http://www.google.com/jsapi">


            type="text/javascript">

var scope =
            "https://www.googleapis.com/auth/moderator";
var token =
            '';

function create(){
 if (token == '')
 token
            = doCheck();

 var myData = {

 "data":
            {
 "description": "Share and rank tips for eating healthily on the cheaps!",
            
 "name": "Eating Healthy & Cheap", 
 "videoSubmissionAllowed":
            false
 }
 };

 $.ajax({


            url: 'https://www.googleapis.com/moderator/v1/series?key='+key,


            type: 'POST',
 callback: '?',
 data: myData,
 datatype:
            'application/json',
 success: function() { alert("Success"); },

            error: function() { alert('Failed!'); },
 beforeSend:
            setHeader

 });
}


function
            setHeader(xhr) {

 xhr.setRequestHeader('Authorization',
            token);
}

function doLogin(){ 
 if (token ==
            ''){
 token = google.accounts.user.login(scope);

            }else{

 alert('already logged');

            }
}


function doCheck(){ 
 token =
            google.accounts.user.checkLogin(scope);
 return
            token;
}


...
...
            data-role="content">
             onclick="doLogin();">
             onclick="getModerator();">
             onclick="create();">