function getCanonicalURL() {
   var canonical = "";
   var links = document.getElementsByTagName("link");
   for (var i = 0; i < links.length; i ++) {
      if (links[i].getAttribute("rel") === "canonical") {
         canonical = links[i].getAttribute("href")
      }
   }
   return canonical;
};

function getCanonicalURLpath() {
   var canonicalURL = "";
   canonicalURL = getCanonicalURL();

   if(canonicalURL.indexOf("://") > 1) {
      // Remove base URL.
      canonicalURL = canonicalURL.substr(canonicalURL.indexOf("//") + 2);
      canonicalURL = canonicalURL.substr(canonicalURL.indexOf("index.html"));
   }
   return canonicalURL;
};