function T(){ this.all.push(this) }
>undefined
T.prototype.all =[];
>[]
function T1() { console.log( arguments.callee.superclass ) }
>undefined
Utils.extend(T1, T);
>undefined
Utils.extend
>function extend(Child, Parent)
	{
		var F = function() { };
		F.prototype = Parent.prototype;
		Child.prototype = new F();
		Child.prototype.constructor = Child;
		Child.superclass = Parent.prototype;
	}
function T2(){ console.log( arguments.callee.superclass ) }
>undefined
Utils.extend(T2, T1);
>undefined
new T
>T
new T1
>T
>T1
new T2
>F
>T2