diff --git a/firepano.js b/firepano.js
index f8034e8..1db7259 100644
--- a/firepano.js
+++ b/firepano.js
@@ -2,26 +2,24 @@ var spinner = new Spinner({color: '#ddd'});
 var firebaseRef = 'https://firepano.firebaseio.com/';
 
 function handleFileSelect(evt) {
-  var f = evt.target.files[0];
+  var selectedFileURL = evt.target.files[0];
   var reader = new FileReader();
-  reader.onload = (function(theFile) {
-    return function(e) {
-      var filePayload = e.target.result;
-      // Generate a location that can't be guessed using the file's contents and a random number
-      var hash = CryptoJS.SHA256(Math.random() + CryptoJS.SHA256(filePayload));
-      var f = new Firebase(firebaseRef + 'pano/' + hash + '/filePayload');
-      spinner.spin(document.getElementById('spin'));
-      // Set the file payload to Firebase and register an onComplete handler to stop the spinner and show the preview
-      f.set(filePayload, function() { 
-        spinner.stop();
-        document.getElementById("pano").src = e.target.result;
-        $('#file-upload').hide();
-        // Update the location bar so the URL can be shared with others
-        window.location.hash = hash;
-      });
-    };
-  })(f);
-  reader.readAsDataURL(f);
+  reader.onload = function(e) {
+    var filePayload = e.target.result;
+    // Generate a location that can't be guessed using the file's contents and a random number
+    var hash = CryptoJS.SHA256(Math.random() + CryptoJS.SHA256(filePayload));
+    var fileRef = new Firebase(firebaseRef + 'pano/' + hash + '/filePayload');
+    spinner.spin(document.getElementById('spin'));
+    // Set the file payload to Firebase and register an onComplete handler to stop the spinner and show the preview
+    fileRef.set(filePayload, function() { 
+      spinner.stop();
+      document.getElementById("pano").src = e.target.result;
+      $('#file-upload').hide();
+      // Update the location bar so the URL can be shared with others
+      window.location.hash = hash;
+    });
+  };
+  reader.readAsDataURL(selectedFileURL);
 }
 
 $(function() {
@@ -36,8 +34,8 @@ $(function() {
   } else {
     // A hash was passed in, so let's retrieve and render it.
     spinner.spin(document.getElementById('spin'));
-    var f = new Firebase(firebaseRef + '/pano/' + hash + '/filePayload');
-    f.once('value', function(snap) {
+    var fileRef = new Firebase(firebaseRef + '/pano/' + hash + '/filePayload');
+    fileRef.once('value', function(snap) {
       var payload = snap.val();
       if (payload != null) {
         document.getElementById("pano").src = payload;