gistfile1.txt

Ext.Ajax.request({
                method: 'GET',
                url: '/api/system/status',
                success: function(resp) {
                    var json = Ext.decode(resp.responseText);
                    Ext.iterate(json, function(host, probe) {
                        var chart = buildChart(probe);
                        menu.add(
                        {
                            title: host,
                            items: [chart]
                        }
                                ).show();
                    });
                }
            });