[рони]

okouser,

function A(name)
{
 var _name = 'test';

 A.prototype.getName = function()
 {
  return _name + this._name;
 };

 A.prototype.setName = function(value)
 {
  this._name = value;
 };

 A.prototype.toString = function()
 {
  return this.getName();
 };

 this.setName(name);
};

A.A1 = new A("1");
A.A2 = new A("2");
A.A3 = new A("3");
alert(A.A1); // test1
alert(A.A2); // test2
alert(A.A3); // test3
A.A2.setName(12345)
alert(A.A2); // test12345
alert(A.A3); // test3