How can i attach my centurion 5.6" tv to headrest?

i have had a portable dvd player for quite a qhile now but have never puit it into the headrest until now. i currently use the stand but it occasionaly falls off. i had a dvd player for this but it stopped turning on so i got rid of it. i now use a ps2 all the time for dvds and sometimes playin the ps2. is there any sort of thing that would hold it into the head rest without it falling out,. thanks