// Inspired by base2 and Prototype
(function(){
  var initializing = false,
    fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
    
  jQuery.Class = function(){};

  // Create a new Class that inherits from this class
  jQuery.Class.create = function(prop) {
    var _super = this.prototype;
     
    // Instantiate a base class (but only create the instance,
    // don't run the init constructor)
    initializing = true;
    var prototype = new this();
    initializing = false;
     
    // Copy the properties over onto the new prototype
    for (var name in prop) {
      // Check if we're overwriting an existing function
      prototype[name] = typeof prop[name] == "function" &&
      typeof _super[name] == "function" && fnTest.test(prop[name]) ?
      (function(name, fn){
        return function() {
          var tmp = this._super;
           
          // Add a new ._super() method that is the same method
          // but on the super-class
          this._super = _super[name];
           
          // The method only need to be bound temporarily, so we
          // remove it when we're done executing
          var ret = fn.apply(this, arguments);     
          this._super = tmp;
           
          return ret;
        };
      })(name, prop[name]) :
      prop[name];
    }
     
    // The dummy class constructor
    function Class() {
      // All construction is actually done in the init method
      if ( !initializing && Class.prototype.init )
        return Class.prototype.init.apply(this, arguments);
    }
     
    // Populate our constructed prototype object
    Class.prototype = prototype;
     
    // Enforce the constructor to be what we expect
    Class.prototype.constructor = Class;
  
    // And make this class extendable
    Class.extend = arguments.callee;
     
    return Class;
  };
  
  
})();