public/ckeditor/4.4dev/plugins/dialogui/plugin.js
function( label, value, index ) {
				var option = new CKEDITOR.dom.element( 'option', this.getDialog().getParentEditor().document ),
					selectElement = this.getInputElement().$;
				option.$.text = label;
				option.$.value = ( value === undefined || value === null ) ? label : value;
				if ( index === undefined || index === null ) {
					if ( CKEDITOR.env.ie )
						selectElement.add( option.$ );
					else
						selectElement.add( option.$, null );
				} else
					selectElement.add( option.$, index );
				return this;
			}
function( label, value, index ) {
				var option = new CKEDITOR.dom.element( 'option', this.getDialog().getParentEditor().document ),
					selectElement = this.getInputElement().$;
				option.$.text = label;
				option.$.value = ( value === undefined || value === null ) ? label : value;
				if ( index === undefined || index === null ) {
					if ( CKEDITOR.env.ie )
						selectElement.add( option.$ );
					else
						selectElement.add( option.$, null );
				} else
					selectElement.add( option.$, index );
				return this;
			}
function ( label , value , index ) { var option = new CKEDITOR . dom . element ( 'option' , this . getDialog ( ) . getParentEditor ( ) . document ) , selectElement = this . getInputElement ( ) . $ ; option . $ . text = label ; option . $ . value = ( value === undefined || value === null ) ? label : value ; if ( index === undefined || index === null ) { if ( CKEDITOR . env . ie ) selectElement . add ( option . $ ) ; else selectElement . add ( option . $ , null ) ; } else selectElement . add ( option . $ , index ) ; return this ; }
Adds an option to the select box.

@param {String} label Option label.
@param {String} value (Optional) Option value, if not defined it will be
assumed to be the same as the label.
@param {Number} index (Optional) Position of the option to be inserted
to. If not defined, the new option will be inserted to the end of list.
@returns {CKEDITOR.ui.dialog.select} The current select UI element.
Adds an option to the select box .