jquery.ui.menubar.js

	_move: function( direction, filter, event ) {
		var  next, wrapItem;

		var activeSubmenu = this.active;
		var activeSubmenusParentMenubarItem = activeSubmenu.closest( ".ui-menubar-item" );
		//var nextSelection

		debugger;
		if ( this.open ) {
			next = [ direction + "All" ]( this.options.items ).first().children( ".ui-menu" ).eq( 0 );
			wrapItem = this.menuItems[ filter ]().children( ".ui-menu" ).eq( 0 );
		} else {
			if ( event ) {
				next = $( event.target ).closest( ".ui-menubar-item" )[ direction + "All" ]( this.options.items ).children( ".ui-menubar-link" ).eq( 0 );
				wrapItem = this.menuItems[ filter ]().children( ".ui-menubar-link" ).eq( 0 );
			} else {
				next = wrapItem = this.menuItems.children( "a" ).eq( 0 );
			}
		}

		if ( next.length ) {
			if ( this.open ) {
				this._open( event, next );
			} else {
				next.removeAttr( "tabIndex")[0].focus();
			}
		} else {
			if ( this.open ) {
				this._open( event, wrapItem );
			} else {
				wrapItem.removeAttr( "tabIndex")[0].focus();
			}
		}
	}

thanks.
i used this plugin, but I found a problem:
when an item in a drop-down sub menu, click on it, the menu will closed.
I don't need it, how to do it, thank you again!