Multidimesional maps, vectors and iterators

[Sheep]

I've got a problem:

I declared the map as
std::map<int, std::vector<SDL_Surface*> > surfaces;

The map is for layer 1, layer 2, etc. The vector inside contains the surfaces...
Now I have an iterator:

std::map<int, std::vector<SDL_Surface*> >::iterator curLayer = surfaces.begin();

Then I have another iteraror:
std::vector<SDL_Surface*>::iterator curItem;

Now this line generates an error:
curItem = (*curLayer).begin();

The error is a long sentence with the end 'does not contain a member named begin()'

Does anyone know how to solve this?

Greetz,
Vincent

 

[Sheep]

Someone.... Help.... Please?