prototypal_inheritance.js

  if (typeof Object.create !== "function")
      Object.create = function (o) {
        function F() {}
        F.prototype = o;
        return new F();
      };

  var Model = {
    prototype: {
      init: function(){}
    },
    
    create: function(){
      return Object.create(this);
    },
    
    inst: function(){
      var instance = Object.create(this.prototype);
      instance.init.apply(instance, arguments);
      return instance;
    }
  };
  
  jQuery.extend(Model, {
    find: function(){},
  });
  
  jQuery.extend(Model.prototype, {
    load: function(attributes){
      for(var name in attributes)
        this[name] = attributes[name];
    }
  });
  
  var Asset = Model.create("Asset");
  
  Asset.prototype.init = function(){
    console.log('loaded')
  };
  
  var asset = Asset.inst();