diff --git a/src/base/single/input/file.js b/src/base/single/input/file.js
index 4ea51047e..867756a7c 100644
--- a/src/base/single/input/file.js
+++ b/src/base/single/input/file.js
@@ -88,7 +88,7 @@
             var split = "onabort.onerror.onloadstart.onprogress".split("."),
                 length = split.length,
                 CRLF = "\r\n",
-                xhr = XMLHttpRequest ? new XMLHttpRequest : new ActiveXObject("Microsoft.XMLHTTP"),
+                xhr = new XMLHttpRequest,
                 sendFile;
             function multipart(boundary, name, file) {
                 return "--".concat(
@@ -251,7 +251,7 @@
         } else {
             // Internet Explorer, Opera, others
             sendFile = function (handler, maxSize, width, height) {
-                var current = handler.current;
+                var current = handler.current, iframe, form;
                 var url = handler.url.concat(-1 === handler.url.indexOf("?") ? "?" : "&", "AjaxUploadFrame=true"),
                     rpe = {
                         loaded: 1, total: 100, simulation: true, interval: setInterval(function () {
@@ -499,9 +499,9 @@
                 if (this.file.fileSize !== -1) {
                     // simulation property indicates when the progress event is fake
                     if (rpe.simulation) {
-
+                        // empty
                     } else {
-
+                        // empty
                     }
                 } else {
                     // if fileSIze is -1 browser is using an iframe because it does