I am guessing the drivers side will be a broken spring or the spring has popped out of its stops. They are simple all be it a bit fiddly so you have nothing to lose in having a go at fixing them but your going to have to buy a passenger side one so I would look for a pair on sale somewhere (OMG just had a quick scan on fleabay & they are going for a small fortune so fix them!!). Not sure if yours have lights like the ones on my 986 Boxster but pic below of internals from when I changed the bulbs might give you an idea of what your up against.
HTH
