namespace_in_jquery.js

//http://bililite.com/blog/2008/08/05/namespaces-in-jquery/

(function($){ 
if ({}.__proto__){ 
  // mozilla  & webkit expose the prototype chain directly 
  $.namespace = function(name){ 
    $.fn[name] = function namespace() { // insert this function in the prototype chain 
      this.__proto__ = arguments.callee; 
      return this; 
    }; 
    $.fn[name].__proto__ = $.fn; 
  }; 
  $.fn.$ = function(){ 
    this.__proto__ = $.fn; 
    return this; 
  };     
}else{ 
  // every other browser; need to copy methods 
  $.namespace = function(name){ 
    $.fn[name] = function namespace() { return this.extend(arguments.callee); }; 
  }; 
  $.fn.$ = function() { // slow but restores the default namespace 
    var len = this.length; 
    this.extend($.fn); 
    this.length = len; // $.fn has length = 0, which messes everything up 
    return this; 
  }; 
} 
})(jQuery);

$.namespace('danny'); 
$.namespace('danny2'); 
$.fn.danny.foo = function() {return this.css('color', 'green')}; 
$.fn.danny2.foo = function(x){alert(x); return this; }; 

// now we have two different methods "foo" 
$('p').danny().foo(); // colors paragraphs green 
$('p').danny2().foo('Hello, world'); // alerts 'Hello, world' 
$('p').danny().foo().danny2().foo('Hello, world'); // chaining works 
$.fn.danny.add = function(a,b) { alert(a+b); return this;}; // defines a function with the same name as a real jQuery one 
$('p').danny().add(1,2).$().add('div'); // the $() plugin restores the real jQuery namespace to a chain