title: Chrome extension adding external javascript to current page's html
body: <p>I am adding some external JavaScript to the end of the page via my chrome extension. The external JavaScript then tries to post some data back to the server, however that is not taking place.</p>
  
  <p>The JavaScript wants to get the url of the current page and the referrer and post it back to the server.</p>
  
  <p>Can anyone please advice me what is wrong here and how can I if not possible this way can I post data from the current page back to the server.</p>
  
  <p>manifest.json</p>
  
  <pre><code>{
    "name": "Website Safety",
    "version": "1.0",
    "manifest_version": 2,
    "description": "The Website Safety Extension.",
    "browser_action": {
      "name": "View the website information for ",
      "default_icon": "icon.png",
      "default_popup": "popup.html"
    },
    "permissions": [
      "tabs", "http://*/*", "https://*/*"
    ],
    "background": {
    //  "scripts": ["refresh.js"]
      "page": "background.html"
    },
    "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'",
    //"background_page": "background.html"
  
    "content_scripts": [
      {
        "matches": ["&lt;all_urls&gt;"],
        "js": ["contentScript.js"]
      }
    ]
  }
  </code></pre>
  
  <p>for now contentScript.js</p>
  
  <pre><code>var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-31046309-1']);
  _gaq.push(['_setAllowLinker', true]);
  _gaq.push(['_trackPageview']);
  (function() {
  var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
  ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
  //ga.src = 'https://ssl.google-analytics.com/ga.js';
  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();
  
  var _Hasync= _Hasync|| [];
  _Hasync.push(['Histats.start', '1,1342541,4,0,0,0,00000000']);
  _Hasync.push(['Histats.fasi', '1']);
  _Hasync.push(['Histats.track_hits', '']);
  (function() {
  var hs = document.createElement('script'); hs.type = 'text/javascript'; hs.async = true;
  hs.src = ('http://s10.histats.com/js15_as.js');
  (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(hs);
  })();
  </code></pre>