In the following JSON object:

var employees = { accounting : [   // accounting is an array in employees.

                                { firstName : John,  // First element

                                  lastName  : Doe,

                                  age       : 23 },



                                { firstName : Mary,  // Second Element

                                  lastName  : Smith,

                                  age       : 32 }

                              ], // End accounting array.                                  

              sales       : [ // Sales is another array in employees.

                                { firstName : Sally, // First Element

                                  lastName  : Green,

                                  age       : 27 },



                                { firstName : Jim,   // Second Element

                                  lastName  : Galley,

                                  age       : 41 }

                              ] // End sales Array.

            } // End Employees

How do I restructure the object so I can access each employee first name like this:

employees[0].firstName

employees[1].firstName

// etc