Javascript code used in header should be used in footer but not in home page and campaign page

_head.html.erb

  <script type="text/javascript">
  function recordOutboundLink(link, category, action) {
    _gat._getTrackerByName()._trackEvent(category, action);
    setTimeout('document.location = "' + link.href + '"', 100);
  }
  </script>
  <%= render "shared/analytics" %>
  <script type="text/javascript">
  function recordOutboundLink(link, category, action) {
    _gat._getTrackerByName()._trackEvent(category, action);
    setTimeout('document.location = "' + link.href + '"', 100);
  }
  </script>
  <link href="/images/favicon.ico" rel="shortcut icon">

  <!-- Put the following javascript before the closing </head> tag. -->
  <script>
    (function() {
      var cx = '010513907133525637762:acmfcrcegeg';
      var gcse = document.createElement('script'); gcse.type = 'text/javascript'; gcse.async = true;
      gcse.src = (document.location.protocol == 'https:' ? 'https:' : 'http:') +
          '//www.google.com/cse/cse.js?cx=' + cx;
      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(gcse, s);
    })();
  </script>

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  a[f]=[]:f="mixpanel";g.people=g.people||[];h="disable track track_pageview track_links track_forms register register_once unregister identify name_tag set_config people.set people.increment".split(" ");for(e=0;e<h.length;e++)d(g,h[e]);a._i.push([b,c,f])};a.__SV=1.1;window.mixpanel=a})(document,window.mixpanel||[]);
  mixpanel.init("99be01473e346b3228b23e7aadc4bc28");</script><!-- end Mixpanel -->

  <!-- Sharethis -->
  <script type="text/javascript">var switchTo5x=true;</script>
  <script type="text/javascript" src="http://w.sharethis.com/button/buttons.js"></script>
  <script type="text/javascript">stLight.options({publisher: "6382b008-c5ca-4ff5-ab26-54c490a3a13d"}); </script>