text: /**
   * @class Class
   * Simple JavaScript Inheritance
   * By John Resig http://ejohn.org/
   * MIT Licensed.
   */
  (function(){
    var initializing = false, fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
    this.Class = function(){};
  
    Class.extend = function(prop) {
      var _super = this.prototype;
  
      initializing = true;
      var prototype = new this();
      initializing = false;
  
      for (var name in prop) {
        prototype[name] = typeof prop[name] == "function" &&
          typeof _super[name] == "function" && fnTest.test(prop[name]) ?
          (function(name, fn){
            return function() {
              var tmp = this._super;
  
              this._super = _super[name];
  
              var ret = fn.apply(this, arguments);
              this._super = tmp;
  
              return ret;
            };
          })(name, prop[name]) :
          prop[name];
      }
  
      function Class() {
        if ( !initializing && this.init )
          this.init.apply(this, arguments);
      }
  
      Class.prototype = prototype;
  
      Class.prototype.constructor = Class;
  
      Class.extend = arguments.callee;
  
      return Class;
    };
  })();
  