code: function (url) {
                  // *WARNING WARNING WARNING*
                  // This method yields the most correct result we can get but it is EXPENSIVE!
                  // In ALL browsers! When called multiple times in a sequence, as if when
                  // we resolve dependencies for entries, it will cause garbage collection events
                  // and overall painful slowness. This is why we try to avoid it as much as we can.
                  // 
                  // @TODO - see if we need this fallback logic
                  // http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue
                  resolverEl.href = url;
  
                  var ret = resolverEl.href,
                      dc = _config.disableCachingParam,
                      pos = dc ? ret.indexOf(dc + '=') : -1,
                      c, end;
  
                  // If we have a _dc query parameter we need to remove it from the canonical
                  // URL.
                  if (pos > 0 && ((c = ret.charAt(pos - 1)) === '?' || c === '&')) {
                      end = ret.indexOf('&', pos);
                      end = (end < 0) ? '' : ret.substring(end);
                      if (end && c === '?') {
                          ++pos; // keep the '?'
                          end = end.substring(1); // remove the '&'
                      }
                      ret = ret.substring(0, pos - 1) + end;
                  }
  
                  return ret;
              }
docs: This method returns a canonical URL for the given URL.
  
  For example, the following all produce the same canonical URL (which is the
  last one):
  
  http://foo.com/bar/baz/zoo/derp/../../goo/Thing.js?_dc=12345
  http://foo.com/bar/baz/zoo/derp/../../goo/Thing.js
  http://foo.com/bar/baz/zoo/derp/../jazz/../../goo/Thing.js
  http://foo.com/bar/baz/zoo/../goo/Thing.js
  http://foo.com/bar/baz/goo/Thing.js
  
  @private