sample_graph.js

  // allow setting / triggering of events for all instances
  _.extend(SG, Backbone.Events);

  _.extend(SG.prototype, Backbone.Events, {
    // allow binding to events triggered from any instance
    // used for hooking into initialize:after by plugins
    setupGlobalEvents: function() {
      this.bind('all', function() {
        var argsWithoutEv = Array.prototype.slice.call(arguments, 1);
        SG.trigger.apply(SG, [arguments[0], this].concat(argsWithoutEv));
      }, this);
    },