52 remoting.xhr.get = function(url, onDone, opt_parameters, opt_headers,  argument
55                                opt_headers, opt_withCredentials);
73 remoting.xhr.post = function(url, onDone, opt_parameters, opt_headers,  argument
76                                opt_headers, opt_withCredentials);
94 remoting.xhr.remove = function(url, onDone, opt_parameters, opt_headers,  argument
97                                opt_headers, opt_withCredentials);
115 remoting.xhr.put = function(url, onDone, opt_parameters, opt_headers,  argument
118                                opt_headers, opt_withCredentials);
138                                  opt_parameters, opt_headers,  argument
168       (typeof opt_headers !== 'object' ||
169        typeof opt_headers['Content-type'] !== 'string')) {
173   if (typeof(opt_headers) === 'object') {
174     for (var key in opt_headers) {
175       xhr.setRequestHeader(key, opt_headers[key]);
177   } else if (opt_headers === undefined) {