insert tables into firebase

gistfile1.html

<script src="https://static.firebase.com/v0/firebase.js"></script>
<script>
var ref=new Firebase('https://diyism.firebaseio.com/');
ref.set({'tb_users':{'1':{'username':'Jack','password':'0data!'},
                    '2':{'username':'Andy','password':'1data!'},
                    '3':{'username':'Bob','password':'2data!'},
                   },
         'tb_stocks':{'1':{'goods_num':'KK0245MM08-804-M', 'quantity':98},
                      '2':{'goods_num':'KK0172YY02-990-L', 'quantity':18},
                      '3':{'goods_num':'KK2104MM681-990-XXL', 'quantity':20}
                     },
         'tb_orders':{'1':{'username':'Andy', 'goods_id':3, 'quantity':1, 'time':'2012-11-29 11:01:01'},
                      '2':{'username':'Bob', 'goods_id':2, 'quantity':1, 'time':'2012-11-29 11:02:01'},
                     }
        }
       );
ref.once('value', function(data)
                  {console.log(data.child('tb_users/2/username').val());
                  }
        );
</script>