@Andy Chase:
What is so “disgusting” about suggesting the possibility of avoiding HTML rendering problems using an alternative technology? Would you care to elaborate?
Silverlight is being used in a large number of media and LOB applications, providing user experiences that would be very challenging using HTML/CSS/JavaScript. I’m not saying it would be the right or best solution to Jeff’s issues, but sometimes a problem like this reveals more creative opportunities than struggling in the same direction.