Fix #1008: Remove use of ActiveXObject in Http.request()

src/core/PaperScript.js

@@ -527,7 +527,9 @@ Base.exports.PaperScript = (function() {
                 // request the source asynchronously and execute as soon as
                 // it is retrieved.
                 Http.request({
-                    url: src, async: async,
+                    url: src,
+                    async: async,
+                    mimeType: 'text/plain',
                     onLoad: function(code) {
                         execute(code, scope, src);
                     }

src/net/Http.js

@@ -13,12 +13,11 @@
 var Http = {
     request: function(options) {
         // Code borrowed from Coffee Script and extended:
-        var ctor = window.ActiveXObject || window.XMLHttpRequest,
+        var xhr = new window.XMLHttpRequest();
-            xhr = new ctor('Microsoft.XMLHTTP');
         xhr.open((options.method || 'get').toUpperCase(), options.url,
                 Base.pick(options.async, true));
-        if ('overrideMimeType' in xhr)
+        if (options.mimeType)
-            xhr.overrideMimeType('text/plain');
+            xhr.overrideMimeType(options.mimeType);
         xhr.onload = function() {
             var status = xhr.status;
             if (status === 0 || status === 200) {

src/svg/SvgImport.js

@@ -684,7 +684,8 @@ new function() {
                 onLoad(node);
             } else {
                 Http.request({
-                    url: source, async: true,
+                    url: source,
+                    async: true,
                     onLoad: onLoad,
                     onError: onError
                 });