I'm trying to get data from Geobytes. One of the templates returns JSON and I need to cross-domain access it.

I wrote these 2 functions

function getCountry(ip) {
    var surl = "http://www.geobytes.com/IpLocator.htm?GetLocation&template=json.txt";
    $.ajax({
        url: surl,
        data: '{"ipaddress":"' + ip + '"}',
        dataType: "jsonp",
        jsonp: "callback",
        jsonpCallback: "jsonpcallback"
        });
    }

    function jsonpcallback(rtndata) {
        alert(rtndata.message);
    }

The call is executed but I get

• 1 warning: Resource interpreted as Script but transferred with MIME type text/html: "http://www.geobytes.com/IpLocator.htm?GetLocation&template=json.txt&callback=jsonpcallback&{%22ipaddress%22:%22200.167.254.166%22}&_=1353148931121"
• 1 Error: Uncaught SyntaxError: Unexpected token :

The error is thrown on the returned data at

{"geobytes":{"countryid":117,

I think is maybe because it's 117 and not "117" but I obviously can't control the returned data

How can I fix these 2 issues?