AJAX call not including headers I specify

[TimeWarDoctor]

I have a javascript/jQuery function:

function getResponse() {



var currentDate = new Date();
var sendMessage = JSON.stringify({
SendTimestamp: currentDate,
Message: "Message 1"
});


$.ajax({
type: "POST",
url: "http://L45723:1802",
data: sendMessage,
headers: {
Accept: "text/x-json",
"Authorization": "Basic " + $.base64.encode("server:server123")
},
contentType: "text/x-json",
success: function (data) {
$('#_receivedMsgLabel').append(data.Message + '<br/>');
alert("ajax.success().");
getResponse();
},
async: true
});


}


However, when I check my server logs (and FireBug), this is the header I am sending in my request:
Host : l45723:1802
User-Agent : Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
Accept : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language : en-us,en;q=0.5
Accept-Encoding : gzip, deflate
Connection : keep-alive
Origin : http://l45723
Access-Control-Request-Method : POST
Access-Control-Request-Headers : authorization,content-type
Pragma : no-cache
Cache-Control : no-cache

Why isn't my authorization stuff included in the header?

[TimeWarDoctor]

Tried changing to GET but still no luck:

$.ajax({
type: "GET",
url: "http://L45723:1802?test1=test2",
//dataType: "json",
async: true,
//data: sendMessage,
headers: {
Accept: "text/x-json",
"Authorization": "Basic " + $.base64.encode("server:server123")
},

success: function (data) {
$("#_receivedMsgLabel").append(data.Message + "<br/>");
alert("ajax.success().");
getResponse();
}
});


Firebug:
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language en-us,en;q=0.5
Access-Control-Request-He... authorization
Access-Control-Request-Me... GET
Connection keep-alive
Host l45723:1802
Origin http://l45723
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0

Server logs:
Request Url: /?test1=test2
Inside ParseInput(): ParseState.Headers
Parsing header: Host : l45723:1802
Inside ParseInput(): ParseState.Headers
Parsing header: User-Agent : Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
Inside ParseInput(): ParseState.Headers
Parsing header: Accept : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Inside ParseInput(): ParseState.Headers
Parsing header: Accept-Language : en-us,en;q=0.5
Inside ParseInput(): ParseState.Headers
Parsing header: Accept-Encoding : gzip, deflate
Inside ParseInput(): ParseState.Headers
Parsing header: Connection : keep-alive
Inside ParseInput(): ParseState.Headers
Parsing header: Origin : http://l45723
Inside ParseInput(): ParseState.Headers
Parsing header: Access-Control-Request-Method : GET
Inside ParseInput(): ParseState.Headers
Parsing header: Access-Control-Request-Headers : authorization