define(function(){var initializing=!1,fnTest=/xyz/.test(function(){xyz})?/\b_super\b/:/.*/;this.Class=function(){};Class.extend=function(prop){var _super=this.prototype;initializing=!0;var prototype=new this();initializing=!1;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.initialize)
this.initialize.apply(this,arguments);}
Class.prototype=prototype;Class.prototype.constructor=Class;Class.extend=arguments.callee;return Class};return Class})