This method allows the caller to add user defined objects to the DOM. The name
provided becomes a property on the box that can be used to reference the object that
was added. aObjName must be non-null and non-empty. The object provided must not be
null.
var box = scene.getBoxById("testBox");
if (box)
{
var employee = new employeeObject();
box.addDOMObject("employee", employee);
box.employee.firstName = "JOHN";
box.employee.lastName = "DOE";
}