Joomla + Mootools XMLHttpRequest problem

I'm building a Joomla extension and i'm trying to send some data to a php script, with MooTools, to be saved in a database.

This is the code for the request :

    myReq: new Request({
        url: '/index.php?option=com_calculator&task=saveData',
        method: 'post',
        onSuccess: function (responseText, responseXML) {
            console.log(reponseText);
        }
    })

When i run it Firebug throws this error:

Permission denied for <http://localhost> to get property XMLHttpRequest.channel

I've read around and think it c开发者_开发问答ould be related to the same domain policy for Ajax,but i couldn't get a fix on it.

Try this:

var requestHTMLData = new Request.HTML ({

            url: 'index.php?option=com_calculator&task=saveData',

            update: $('contains')

        }).send();

$('contains') is those div id that your want to response.

for more info see Gantry Framework