Anyone using RedBox plugin?

I'm working with the RedBox plug-in ( projects/redbox). Does anyone understand why this has some weird behavior with select boxes in forms? It apparently hides them? I can remove the hideSelectBoxes function, but I want to know why it is there?

Thanks, Tom

I suspect it's due to Internet Explorer's delightful habit of rendering select boxes on top of anything else in the page, regardless of z index.