Small line in screen: Crack in LCD or Hair?

I've noticed a small line developing at the top edge of my MacBook Pro's screen, barely longer than an inch from the top.

Now, is this a crack? I'm only asking because as I pick up my MBP and turn it side to side, the object seems to move with the behavior that it's behind the screen. For instance, when I turn it, I see it moving relative to the letters on the screen to my viewing angle.

Also, looking at it from the side (about a 70º angle) it's invisible.


I've read that some people have had hair caught in between their screen and backlight. If this is my case, how on earth do I go about removing this annoying thing?

If it's a crack, guess I'm SOL. 2007 MBP with no warranty.

Well it's not actually moving, it just appears to shift relative to text on the screen, like it's behind the LCD.

So is it possible to separate the LCD panel from the backlight? When I replaced the screen in a friends MB, they were together.