Class(A);
function A()
{
  this.konstructor = function(p1){ this.a = p1; }
  this.sayHi       = function(){ alert("Howdy!"); }
  this.sayBye      = function(){ alert("Bye!"); }
  this.dumpvars    = function(){ return " a="+this.a; }
  this.dump        = function(){ return "["+this.dumpvars()+" ]"; }
}

Class(B).Extends(A);
function B()
{
  this.konstructor = function(p1,p2){ this.souper(p1); this.b = p2; }
  this.dumpvars    = function(){ return this.souper()+" b="+this.b; }
  this.sayBye      = function(){ alert("Aloha!"); }
}

Class(C).Extends(B);
function C()
{
  this.konstructor = function(p1,p2,p3){ this.souper(p1,p2); this.c = p3; }
  this.dumpvars    = function(){ return this.souper()+" c="+this.c; }
  this.sayHi       = function(){ this.souper(); alert("Y'all"); }
}

Class(NotUsed);
function NotUsed(){ this.sayFool = function(){ alert("fool"); } }

var gA = new A(1);
var gB = new B(2,3);
var gC = new C(4,5,6);

function listInstanceOf( anObject ){
	return "["
        + (anObject instanceof A ? "A" : " ")
        + (anObject instanceof B ? "B" : " ")
        + (anObject instanceof C ? "C" : " ")
        + (anObject instanceof NotUsed     ? "Err1" : "")
        + (anObject instanceof dumpObjects ? "Err2" : "")
        + "]";
}
function dumpObjects(){
  var s = "gA:"+listInstanceOf(gA)+ gA.dump() + "[br/]"
        + "gB:"+listInstanceOf(gB)+ gB.dump() + "[br/]"
        + "gC:"+listInstanceOf(gC)+ gC.dump() + "[br/]";

  document.getElementById("OutputArea").innerHTML = s;
}