var startID = "";

function isDefined(variable){ 
	return this[variable] === undefined ? false : true;
};

function callExternalInterface(id) {
	startID = id;
	if (!isDefined("fenster") || (fenster.closed)) {
		start_player();
		return false;
	}
	thisMovie("musicbox").go_id(id);
	return false;
}

function thisMovie(movieName) {
    if (navigator.appName.indexOf("Microsoft") != -1) {
        return fenster.window[movieName]
    }
    else {
        return fenster.document[movieName]
    }
}

function start_player() {
	var url = 'fileadmin/files/rotschopf/musicbox/musicbox.html';
	fenster = window.open(url, 'Rotschopf Musicbox', 'width=337,height=201,status=no,scrollbars=no,resizable=yes');
	return false;
}