X_ViewPort_rootElement = document.compatMode !== 'CSS1Compat' ? elmBody : elmHtml || elmBody;
- html = X[ 'Doc' ][ 'html' ] = X_Node_html = elmHtml && new Node( elmHtml ).removeClass( 'js-disabled' ).addClass( X_UA_classNameForHTML );
+ html = X[ 'Doc' ][ 'html' ] = X_Node_html = elmHtml && new Node( elmHtml )[ 'removeClass' ]( 'js-disabled' )[ 'addClass' ]( X_UA_classNameForHTML );
html[ '_flags' ] |= X_Node_State.IN_TREE;
head = X[ 'Doc' ][ 'head' ] = X_Node_head = elmHead && new Node( elmHead );