Attach utm to links on page so they pass from page to page uses jQuery

utm_passing_between_pages.html

<script>
  function getParameterByName(name) {
    name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
    var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
    results = regex.exec(location.search);
    return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
  }

  jQuery(document).ready(function() {
    var siteURL = "http://" + top.location.host.toString();
    jQuery("a[href^='"+siteURL+"'], a[href^='/'], a[href^='./'], a[href^='../'], a[href^='#']").attr('href', function(i, h) {
      var param, value;
      var utms = ['utm_source', 'utm_term', 'utm_content', 'utm_medium', 'utm_campaign'];
      utms.forEach(function(utm) {
        value = getParameterByName(utm);
        param = utm + '=' + value;
        if(value.length > 0) {
           h = h + (h.indexOf('?') != -1 ? "&" : "?") + param;
        }
      })
      return h;
    });
  });
</script>