diff --git a/background.js b/background.js
deleted file mode 100644
index 61d0602e..00000000
--- a/background.js
+++ /dev/null
@@ -1,28 +0,0 @@
-// Listens when new request
-chrome.webRequest.onHeadersReceived.addListener(function(details) {
-  for (i = 0; i < details.responseHeaders.length; i++) {
- 
-    if (isCSPHeader(details.responseHeaders[i].name.toUpperCase())) {
-      var csp = details.responseHeaders[i].value;
- 
-      // append "https://mysite.com" to the authorized sites
-      csp = csp.replace('script-src', "script-src cdnjs.cloudflare.com");
-      csp = csp.replace('style-src', 'style-src cdnjs.cloudflare.com');
-      csp = csp.replace('font-src', 'font-src cdnjs.cloudflare.com');
- 
-      details.responseHeaders[i].value = csp;
-    }
-  }
- 
-  return { // Return the new HTTP header
-    responseHeaders: details.responseHeaders
-  };
-}, {
-  urls: ["https://github.com/*"],
-  types: ["main_frame"]
-}, ["blocking", "responseHeaders"]);
- 
- 
-function isCSPHeader(headerName) {
-  return (headerName == 'CONTENT-SECURITY-POLICY') || (headerName == 'X-WEBKIT-CSP');
-}
\ No newline at end of file
diff --git a/content.js b/content.js
index 3776504b..4b6157ff 100755
--- a/content.js
+++ b/content.js
@@ -1,44 +1,10 @@
 var config = chrome.extension.getURL('mathjax_config.js');
-// $('script').first().after('<script type="text/javascript" src="' + config + '" ></script>');
 var mathjax = chrome.extension.getURL('MathJax/MathJax.js');
-// $('script').first().after('<script type="text/javascript" src="' + mathjax + '" ></script>');
 var jquery = chrome.extension.getURL('jquery-min-1.7.2.js');
-// $('script').first().after('<script type="text/javascript" src="' + jquery + '" ></script>');
 var dynamic_math = chrome.extension.getURL('dynamic_math.js');
-// $('script').first().after('<script type="text/javascript" src="' + dynamic_math + '" ></script>');
 
 $.include([config, jquery], function() {
     $.include([mathjax], function() {
         $.include([dynamic_math]);
     });
 });
-// $('script').first().after('<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>');
-// var render_math_in_preview = 'document.addEventListener("pjax:end", function(){alert("Test");MathJax.Hub.Queue(["Typeset", MathJax.Hub]);});';
-// var render_math_in_preview = '\
-// jQuery(".js-preview-tab").on("click", function(e) { \
-//     function didLoadPreview() { \
-//         alert("Test3!!!"); \
-//         alert(window.MathJax);\
-//         window.MathJax.Hub.Queue(["Typeset", window.MathJax.Hub]); \
-//     } \
-//     setTimeout(didLoadPreview, 500); \
-// });';
-// alert(render_math_in_preview);
-// $('script').first().after('<script type="text/javascript">' + render_math_in_preview + '</script>');
-// $(document).on('preview:render', function (t) {
-//     alert('preview:render');
-//     MathJax.Hub.Queue(["Typeset", MathJax.Hub]);
-// });
-// $.ready(function(){
-// $('.js-preview-tab').on("click", function(e) {
-//     function didLoadPreview() {
-//         alert("Test3!!!");
-//         window.MathJax.Hub.Queue(["Typeset", window.MathJax.Hub]);
-//     }
-//     setTimeout(didLoadPreview, 2000);
-// });
-// });
-
-// $.ready(function(){
-//     preview:render
-// });
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index 560c9986..f99d02dd 100755
--- a/manifest.json
+++ b/manifest.json
@@ -2,17 +2,10 @@
   "manifest_version": 2,
   "name": "GitHub with MathJax",
   "description": "Renders Github equations with MathJax",
-  "version": "0.1.2",
+  "version": "0.2",
   "permissions": [
-    "management",
-    "webRequest",
-    "webRequestBlocking",
     "https://github.com/*"
   ],
-  "background": {
-    "scripts": ["background.js"],
-    "persistent": true
-  },
   "web_accessible_resources": ["mathjax_config.js", "MathJax/*", "jquery-min-1.7.2.js", "dynamic_math.js"],
   "content_scripts": [
     {