docs: function (hash) {
              var iframe = this._iframe;
              if (!iframe) {
                  return;
              }
              hash = hash || "";
              if (this._currentIframeHashString != hash) {
                  var src = ['javascript:document.open();'];
                  src.push('document.write(\"<script type=\\\"text/javascript\\\">');
                  if (Aria.domain) {
                      src.push('document.domain=\\\"' + Aria.domain + '\\\";');
                  }
                  src.push('if (parent.' + this.$classpath + '){parent.' + this.$classpath
                          + '.polledIframeHashString=\\\"' + hash + '\\\";}');
                  src.push("</script>\");");
                  src.push('document.close();');
                  iframe.src = src.join("");
                  this._currentIframeHashString = hash;
              }
          }