Faking reflection with changing render order?

Hi

I'd like to fake reflection of ball in pinball table. I have planned to do it with copying (or mirroring ) ball mesh under table and then changing render order so that mirrored ball is rendered after table surface but before other stuff in table. So I'd like to know good way to change render other and don't know where to start.

Little coding I have done in Unity, I have done in javascript so like to make it in javascript. But if it's not possible to do with javascript I think I'm able to at least edit some C# code for my purposes.