gistfile1.js

name="global";
var a = {
   name:"a",
   prop:Func,
   b:{
      name:"b",
      prop:Func
   }
};

function Func(){
   console.log(this.name);
}
Func.prototype.name="Func";

Func();//prints global
new Func();//prints Func
a.prop();//prints a
a.b.prop();//prints b