broken plastic lineing

[DWosik13]

Both sides of my car have broken plastic peices lining the door and i was wondering how i could fix them or where i could get new ones
i snap them on but they slip right off

http://img1.putfile.com/thumb/3/7321464358.jpg (http://www.putfile.com/pic.php?img=4993625)

[rixGAphx]

That's 'door opening trim' plastic.

Kinda tough to repair, since it shrinks a little with age and then cracks.
Even if you superglue the craks (which you can do), the stuff will re-crack soon.

Most junkyard plastic form your same year/model will also have identical cracks, but you can certainly scour your local yards for good pieces.

The dealer is the only source of replacement trim.
Since it's 11-yrs old, the need for replacements is pretty low and it prolly isn't readily stocked anywhere.
There might be some pieces of gray 4-door trim still on a shelf somewhere.
The trick is getting your dealer to find another dealer who has the stuff.
They generally want a lot of money for these parts, since it costs a lot to store bulky pieces of plastic for years/decades 'til somebody finally buys it.

This plastic trim is most-often replaced after a collision, so most body shops have an 'Interiors' department, or they sub-out the work to a specialty upholstery/interiors shop.
So these guys also have access to spare parts, including cars that have been 'totalled' and are available for pulling good parts from.

Hope this helps.
-Rick

PS:
If you try to repair this with superglue, keep in mind that the stuff cracks because it shrinks.
Look at one of the pieces:
It starts on the sill, goes left, then up and around the top, then donw, and finally comes back to the sill on the right. There's a gap between the start (left piece) and the end (right piece).
As the plastic shrinks over time, it gets shorter; so the gap 'grows'.

When you repair the piece, it's important to allow it to shrink and move; if it can't, then the stresses build-up and it just cracks again.

Sometimes it's best to just cut it neatly into two pieces, and use some trim screws to make a decent-looking repair.
In the Checker/AutoZone/etc., there's a shelf of stuff under the brand of 'HELP!', and they have all sorts of trim screws and stuff for fixing miscellaneous car stuff.