bug ;)

www/js/autodoc.js

     }
   }
   else if ( e.type == 'load' ) {
-    var xhr = new XMLHttpRequest();
     
     temp.upload[e.data]['progress'] = 50;
     
       url: conf.openapi + "/documents/" + temp.documentid + "/data",
       data: e.target.result,
       context: e.data,
-      beforeSend: function(XMLHttpRequest)
+      xhr: function()
       {
-        XMLHttpRequest.upload.addEventListener("progress", function(evt){
+        var xhr = new window.XMLHttpRequest();
+        xhr.upload.addEventListener("progress", function(evt){
           if (evt.lengthComputable) {  
             var percentComplete = evt.loaded / evt.total;
             console.log("upload_progress_event", evt);
           }
         }, false); 
-        
+        return xhr;
       },
       success: function(data){
         console.log("upload_complete",data);