^ I have to agree with the guy above, there don't seem to be any other ways to do this. Well, you could have a look at the z-order bar, or have the objects that need to be "under" into another layer entirely, but this pretty much is the same thing.
Btw, if you'd like a smooth disappear effect, you could create a sprite with the edges blurred that would be below the header but above the objects in question, this would make it appear that the objects are gradually fading out...