function saveList(){
	if(store.isDirectory) return;
	var packet = '';
	for(var i in todolist)
	{
		packet += todolist[i] + '\r\n';
	}
	var bytes = new air.ByteArray();
	bytes.writeUTFBytes(packet);
	fileStream.open(store, air.FileMode.WRITE);
	fileStream.writeBytes(bytes, 0, bytes.length);
	fileStream.close();
}