--- a/ajax.js	Tue Nov 25 20:43:36 2014 +0200
+++ b/ajax.js	Tue Nov 25 20:46:50 2014 +0200
@@ -215,3 +215,63 @@
 
   return true;
 }
+
+
+function jsFormatSize(bytes)
+{
+  var suffixes = ["Bytes", "KiB", "MiB"];
+  var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
+  return (bytes / Math.pow(1024, i)).toFixed(1) +' '+ suffixes[i];
+}
+
+
+function jsFileUploadSelected(id, maxSize)
+{
+}
+
+
+function jsStartFileUpload(id, tgt)
+{
+  var elem = document.getElementById(id);
+  //var fd = document.getElementById(id).getFormData(); // for FF3
+  var fd = new FormData(elem); 
+
+  var req = jsCreateXMLRequest();
+  req.upload.addEventListener('progress', jsUploadProgress, false);
+  req.addEventListener('load', jsUploadFinished, false);
+  req.addEventListener('error', jsUploadError, false);
+  req.addEventListener('abort', jsUploadAbort, false);
+  req.open('POST', tgt);
+  req.send(fd);
+}
+
+
+function jsUploadProgress(e)
+{
+  if (e.lengthComputable)
+  {
+    var complete = Math.round(e.loaded * 100 / e.total);
+    if (complete < 100)
+      jsStatusMsg("Uploaded "+ complete.toString() +'%, '+ jsFormatSize(e.loaded));
+    else
+      jsStatusMsg("Upload finished ...");
+  }
+}
+
+
+function jsUploadFinished(e)
+{
+  jsMessageBox(e.target.responseText);
+}
+
+
+function jsUploadError(e)
+{
+  jsMessageBox("Error occured while uploading.");
+}
+
+
+function jsUploadAbort(e)
+{
+  jsMessageBox("File upload aborted.");
+}