My apple i-pod froze its a white screen and it wont even let me turn it off?

[Fiery]

i was on facebook looking at my messages and my ipod screen turned half way sideways and then my screen turned white and it wont do anything i tried turning it off nothing its been like this for the past hour help does anyone know what I can do or if it will still be okay
its one of those new flat ones and i don't see where i can just unscrew and take a battery out

[Phill]

Try a reset;
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
Then connect to computer and if iTunes sees the iPod restore it.
If screen is still white, let the battery fully drain. After charging for an hour try the reset, connect and restore again. If the iPod is off you can see if placing the iPod in recovery mode will allow a restore.

[toby]

Hold down the home button and the lock button for about 20seconds and the ipod should restart
This acts as a forced restart like holding down the power button on a pc