person = new Object();
person.firstName = "Frodo ";
var tt = function(e) {document.write(e+this.firstName );
   this.firstName = "nul ";}
person.sayName = tt;
person.sayName("1 ");
var firstName = "Outer persona";
{var firstName = "nf "; tt("C1 "); tt("C2 ");}
tt("C3 ");