Move to MBScene._make_layers_integral() - Old MBScene.parseScene()/create_framelines()/update_framelines() is too fragile and inefficiently. - MBScene._make_layers_integral() is more robust that - separate logic into removing layer group nodes and adding layer group nodes - refactory code of create framelines and layers into methods - it make logic into layers - framelines and layers are incremental updated to avoid overhead of creating/destroying all framelines and layer objects.

// -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
// vim: sw=4:ts=8:sts=4
var svg = require("svg");
var mbapp = require("mbapp");
var sys=require("sys");
var animate=require("animate");
var fs = require("fs");
var main=require("./mainmenu");
app = new mbapp.app(":0.0",800,600);
scene=new main.MainMenu(app);
app.loop();