sub-module that loads itself dynamically to its parent

pattern : dynamic sub-module

// sub-module that loads itself dynamically to its parent
// see: http://www.adequatelygood.com/2010/3/JavaScript-Module-Pattern-In-Depth
var UTIL = (function (parent, $) { 
		var self = parent.ajax = parent.ajax || {}; 
		 
		self.get = function (url, params, callback) { 
				return $.getJSON(url, params, callback); 
		}; 
		 
		// etc... 
		 
		return parent; 
}(UTIL || {}, jQuery));