code: function( part, fn ) {
  			if ( CKEDITOR.skin.name != getName() ) {
  				CKEDITOR.scriptLoader.load( CKEDITOR.getUrl( getConfigPath() + 'skin.js' ), function() {
  					loadCss( part, fn );
  				} );
  			} else {
  				loadCss( part, fn );
  			}
  		}
docs: Loads a skin part into the page. Does nothing if the part has already been loaded.
  
  **Note:** The "editor" part is always auto loaded upon instance creation,
  thus this function is mainly used to **lazy load** other parts of the skin
  that do not have to be displayed until requested.
  
  // Load the dialog part.
  editor.skin.loadPart( 'dialog' );
  
  @param {String} part The name of the skin part CSS file that resides in the skin directory.
  @param {Function} fn The provided callback function which is invoked after the part is loaded.