diff --git a/lib/XMLHttpRequest.js b/lib/XMLHttpRequest.js
index bada957..cb9df83 100644
--- a/lib/XMLHttpRequest.js
+++ b/lib/XMLHttpRequest.js
@@ -14,16 +14,71 @@
 var Url = require("url");
 var spawn = require("child_process").spawn;
 var fs = require("fs");
+var http = require("http");
+var https = require("https");
+
+// Set some default headers
+var defaultHeaders = {
+  "User-Agent": "node-XMLHttpRequest",
+  "Accept": "*/*"
+};
+
+// These headers are not user setable.
+// The following are allowed but banned in the spec:
+// * user-agent
+var forbiddenRequestHeaders = [
+  "accept-charset",
+  "accept-encoding",
+  "access-control-request-headers",
+  "access-control-request-method",
+  "connection",
+  "content-length",
+  "content-transfer-encoding",
+  "cookie",
+  "cookie2",
+  "date",
+  "expect",
+  "host",
+  "keep-alive",
+  "origin",
+  "referer",
+  "te",
+  "trailer",
+  "transfer-encoding",
+  "upgrade",
+  "via"
+];
+
+// These request methods are not allowed
+var forbiddenRequestMethods = [
+  "TRACE",
+  "TRACK",
+  "CONNECT"
+];
+
+/**
+ * Check if the specified header is allowed.
+ *
+ * @param string header Header to validate
+ * @return boolean False if not allowed, otherwise true
+ */
+var isAllowedHttpHeader = function(header) {
+  return disableHeaderCheck || (header && forbiddenRequestHeaders.indexOf(header.toLowerCase()) === -1);
+};
+
+/**
+  * Check if the specified method is allowed.
+  *
+  * @param string method Request method to validate
+  * @return boolean False if not allowed, otherwise true
+  */
+var isAllowedHttpMethod = function(method) {
+  return (method && forbiddenRequestMethods.indexOf(method) === -1);
+};
 
 exports.XMLHttpRequest = function() {
   "use strict";
-
-  /**
-   * Private variables
-   */
   var self = this;
-  var http = require("http");
-  var https = require("https");
 
   // Holds http.js objects
   var request;
@@ -36,48 +91,9 @@ exports.XMLHttpRequest = function() {
   // Not part of XHR specs.
   var disableHeaderCheck = false;
 
-  // Set some default headers
-  var defaultHeaders = {
-    "User-Agent": "node-XMLHttpRequest",
-    "Accept": "*/*",
-  };
-
   var headers = {};
   var headersCase = {};
 
-  // These headers are not user setable.
-  // The following are allowed but banned in the spec:
-  // * user-agent
-  var forbiddenRequestHeaders = [
-    "accept-charset",
-    "accept-encoding",
-    "access-control-request-headers",
-    "access-control-request-method",
-    "connection",
-    "content-length",
-    "content-transfer-encoding",
-    "cookie",
-    "cookie2",
-    "date",
-    "expect",
-    "host",
-    "keep-alive",
-    "origin",
-    "referer",
-    "te",
-    "trailer",
-    "transfer-encoding",
-    "upgrade",
-    "via"
-  ];
-
-  // These request methods are not allowed
-  var forbiddenRequestMethods = [
-    "TRACE",
-    "TRACK",
-    "CONNECT"
-  ];
-
   // Send flag
   var sendFlag = false;
   // Error flag, used when errors occur or abort is called
@@ -116,30 +132,6 @@ exports.XMLHttpRequest = function() {
   // credentials such as cookies or authorization headers
   this.withCredentials = false;
 
-  /**
-   * Private methods
-   */
-
-  /**
-   * Check if the specified header is allowed.
-   *
-   * @param string header Header to validate
-   * @return boolean False if not allowed, otherwise true
-   */
-  var isAllowedHttpHeader = function(header) {
-    return disableHeaderCheck || (header && forbiddenRequestHeaders.indexOf(header.toLowerCase()) === -1);
-  };
-
-  /**
-   * Check if the specified method is allowed.
-   *
-   * @param string method Request method to validate
-   * @return boolean False if not allowed, otherwise true
-   */
-  var isAllowedHttpMethod = function(method) {
-    return (method && forbiddenRequestMethods.indexOf(method) === -1);
-  };
-
   /**
    * Public methods
    */
@@ -400,7 +392,7 @@ exports.XMLHttpRequest = function() {
       self.dispatchEvent("readystatechange");
 
       // Handler for the response
-      var responseHandler = function responseHandler(resp) {
+      function responseHandler(resp) {
         // Set response var to the response we got back
         // This is so it remains accessable outside this scope
         response = resp;