Product Version = NetBeans IDE 7.2.1 (Build 201210100934)
Operating System = Linux version 3.5.0-22-generic running on amd64
Java; VM; Vendor = 1.7.0_09
Runtime = OpenJDK 64-Bit Server VM 23.2-b09

 if (obj.return >= 0)

In the above javascript, netbeans indicates that "Missing name after the operator '.'".  I believe the issue is with using "return" as the variable name...other names work fine.  

Complete code segment:

                    barChart = a_chart.attachChart({
                        view: "bar",
                        container: "chartDiv",
                        value: "#return#",
                        gradient: "falling",
                        color: function(obj) {
                            if (obj.return >= 0)
                            {return "#99FF66";}
                            else
                            {return "#FF0033";}
                        },
                        radius: 0,
                        alpha: 0.5,
                        border: true,
                        width: 70,
                        label: "#return#",
                        xAxis: {
                            template: "#date#",
                            title: id
                        },
                        yAxis: {
                            template: function(obj) {
                                return (obj % 1 ? "": obj);
                            }
                        },
                        origin: 0
                    });