if(typeof Class == 'undefined') { var Class = function(){};  }
if(!Class.def) {
	Class.def = function(def, stopConstruct) {
		if(!stopConstruct) { stopConstruct = false; }
		var obj = new def();
		var tmp = function(){};
		tmp.prototype = obj.definition;
		var Class = new tmp();
		if(typeof Class.init == 'function' && stopConstruct == false) {
			Class.init();
		}
		return Class;
	};

	Class.create = function(def) {
		var tmp = function(){
			this.definition = def;
		};
		return tmp;
	};

	Class.extends = function(parent, def) {
		var obj = this.def(parent, true);
		if(obj['init']) {
			obj._parent = { init: obj.init };
		}
		for(var x in def) {
			obj[x] = def[x];
		}
		return this.create(obj);
	};
}