NAD Remote Disassembly

I have a nonfunctioning remote for an old NAD 5440 CD player, but I can't determine how to take it apart without breaking it. Does anyone know how to take one apart?
That may be a difficult one to get an answer on. However it looks like there is one for sale on EBAY right now for about $25.00. Check it out. May be your only solution.
I looked, but the ad didn't help me out. Thanks anyway.