var Parent=function(){
this.par='par';};
Parent.prototype.parProto='parProto';
var Child=function(){
Parent.apply(this);
this.chld='chld';};
Child.prototype=Object.create(Parent.prototype);
Child.prototype.chldProto='chldProto';
var Current=function(){
Child.apply(this);}
Current.prototype=Object.create(Child.prototype);
var inst=new Current;