1 dcounter = 10

     2 function draw(value)  {

     3 	baseRet = Base.prototype.draw(value)

     4 	old = dcounter

     5 	dcounter += 10

     6 	return baseRet + old * value;

     7 	

     8 }

     9 function Derived() {

    10 	Base.apply(this)

    11 }

    12 Derived.prototype = new Base;

    13 

    14 Derived.prototype.draw = draw

    15