diff --git a/public/cache.manifest b/public/cache.manifest
index 73be20cf..1e23a157 100644
--- a/public/cache.manifest
+++ b/public/cache.manifest
@@ -1,5 +1,5 @@
 CACHE MANIFEST
-#Date Mon Oct 14 2013 00:50:07
+#Date Tue Oct 15 2013 00:32:38
 
 CACHE:
 index.html
diff --git a/public/res-min/main.js b/public/res-min/main.js
index 01cd9490..e2050bbb 100644
--- a/public/res-min/main.js
+++ b/public/res-min/main.js
@@ -20594,7 +20594,7 @@ if (hljs.LANGUAGES.glsl = function(e) {
    m = !1, p = o;
    var r = n(o, d, u);
    r = t.min([ r, s.session.getScreenLength() * s.renderer.lineHeight - s.renderer.$size.scrollerHeight ]), 
-   Math.abs(r - i) <= 9 ? h = i : (v = !0, e("<div>").animate({
+   0 > r && (r = 0), Math.abs(r - i) <= 9 ? h = i : (v = !0, e("<div>").animate({
     value: r - i
    }, {
     easing: "easeOutSine",
@@ -21863,11 +21863,9 @@ if (hljs.LANGUAGES.glsl = function(e) {
  }, f.onSaveSettings = function(e) {
   e.locale = i.getInputValue("#select-spell-check-locale");
  };
- var g = new Worker("res/worker.js");
- g.postMessage(l);
- var m = !1;
+ var g = void 0, m = !1;
  f.onInit = function() {
-  require([ "text!../libs/dictionaries/" + f.config.locale + ".dic.lz", "text!../libs/dictionaries/" + f.config.locale + ".aff.lz" ], function(e, t) {
+  g = new Worker("res/worker.js"), g.postMessage(l), require([ "text!../libs/dictionaries/" + f.config.locale + ".dic.lz", "text!../libs/dictionaries/" + f.config.locale + ".aff.lz" ], function(e, t) {
    g.postMessage(JSON.stringify([ "init", s, a, f.config.locale, t, e ])), m = !0, 
    p();
   });
diff --git a/public/res/extensions/scrollLink.js b/public/res/extensions/scrollLink.js
index b95fb8dd..b706ca5d 100644
--- a/public/res/extensions/scrollLink.js
+++ b/public/res/extensions/scrollLink.js
@@ -149,6 +149,8 @@ define([
                 destScrollTop,
                 aceEditor.session.getScreenLength() * aceEditor.renderer.lineHeight - aceEditor.renderer.$size.scrollerHeight
             ]);
+            // If negative, set it to zero
+            destScrollTop < 0 && (destScrollTop = 0);
             if(Math.abs(destScrollTop - editorScrollTop) <= 9) {
                 // Skip the animation if diff is <= 9
                 lastEditorScrollTop = editorScrollTop;
diff --git a/public/res/extensions/spellCheck.js b/public/res/extensions/spellCheck.js
index c99ec558..04f49b9c 100644
--- a/public/res/extensions/spellCheck.js
+++ b/public/res/extensions/spellCheck.js
@@ -25,12 +25,12 @@ define([
         newConfig.locale = utils.getInputValue("#select-spell-check-locale");
     };
 
-    // Create a web worker
-    var worker = new Worker('res/worker.js');
-    worker.postMessage(spellCheckWorkerJS);
-
+    var worker = undefined;
     var isInited = false;
     spellCheck.onInit = function() {
+        // Create a web worker
+        worker = new Worker('res/worker.js');
+        worker.postMessage(spellCheckWorkerJS);
         require([
             'text!../libs/dictionaries/' + spellCheck.config.locale + '.dic.lz',
             'text!../libs/dictionaries/' + spellCheck.config.locale + '.aff.lz',