gistfile1.js

        close: function( event ) {
                clearTimeout( this.closing );
                if ( this.menu.element.is(":visible") ) {
                        this.menu.element.hide();
                        this.menu.deactivate();
                        this._trigger( "close", event );
                }
        },

        _suggest: function( items ) {
                var ul = this.menu.element
                        .empty()
                        .zIndex( this.element.zIndex() + 1 );
                this._renderMenu( ul, items );
                // TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate
                this.menu.deactivate();
                this.menu.refresh();

                // size and position menu
                ul.show();
                this._resizeMenu();
                ul.position( $.extend({
                        of: this.element
                }, this.options.position ));

                if ( this.options.autoFocus ) {
                        this.menu.next( new $.Event("mouseover") );
                }
        },