Portable DVD player that mounts on headrest?
 

I'm looking for a portable DVD player that securely mounts on the headrest of a front seat.
DVD-LS865 from Panasonic appears to fit the bill, except that it cannot be mounted on a headrest that cannot be height-adjusted, which is the case with XC-70s.

What are my options?
Can someone recommend dvd player and headrest mount combination that are reliable?

Thanks.