2006-11-01-08:00 Item 1 0 0 0 2006-12-01-08:00 Item 2 0 0 0 0 0 0 Graph 2006-12-01-08:00 0 0 0 2006-12-01-08:00 0 0 0 0 0 0 Graph With Overage Delete Invoice Item Delete Overage Without Overage Delete Invoice Item Add Invoice Item without Overage Add Invoice Item with Overage