code: function guessDocumentSize( dimension, _document ) {
          var ddE = _document.documentElement;
  
          return Math.max(
              ddE.body[ "scroll" + dimension ], _document[ "scroll" + dimension ],
              ddE.body[ "offset" + dimension ], _document[ "offset" + dimension ],
              _document[ "client" + dimension ]
          );
      }
docs: Returns a best guess for the window width or height. Used as a fallback for unsupported browsers which are too
  broken to even run the feature test.
  
  The conventional jQuery method of guessing the document size is used here: every conceivable value is queried and
  the largest one is picked.
  
  @param {string}   dimension    accepted values are "Width" or "Height" (capitalized first letter!)
  @param {Document} [_document]