docs: function (domElt, count) {
              if (count == null) {
                  count = 1;
              }
              while (domElt && count > 0) {
                  domElt = domElt.previousSibling;
                  if (domElt && domElt.nodeType == 1) {
                      count--;
                  }
              }
              return domElt;
          }