[jQuery] AJAX POST causing 500 unimplemented method

I am using an AJAX POST, i.e.: $.ajax({ url: serviceUrl, async: false, data: params, type: "POST", dataType: "xml", //more code here... }); But in the browser, I see that instead of a "POST" I see an "OPTIONS" as well as a "500 unimplemented method." Any idea what that

[jQuery] AJAX POST causing 500 unimplemented method

I am using an AJAX POST, i.e.: $.ajax({ url: serviceUrl, async: false, data: params, type: "POST", dataType: "xml", //more code here... }); But in the browser, I see that instead of a "POST" I see an "OPTIONS" as well as a "500 unimplemented method." Any idea what tha