Missing Method in TopsController

Error: The action JavaScript:openWindow( 'https: is not defined in controller TopsController

Error: Create TopsController::JavaScript:openWindow( 'https:() in file: app/controllers/tops_controller.php.

<?php
class TopsController extends AppController {

	var $name = 'Tops';


	function JavaScript:openWindow( 'https:() {

	}

}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_action.ctp