[R] 3d matrix * 1d matrix question

[gene]

Apologies for the rather newbie question, but I haven't been able to 
figure this out.
I've got a 3d matrix (though presumably, the answer would be the same 
as for a 2d matrix) which I want to multiply by the values in a vector 
like so:

matrix m is:
, , 1
     [,1] [,2]
[1,]    1    6
[2,]    2    7
[3,]    3    8
, , 2
     [,1] [,2]
[1,]   21   26
[2,]   22   27
[3,]   23   28
, , 3
     [,1] [,2]
[1,]   41   46
[2,]   42   47
[3,]   43   48
vector v is c(2,10).
I want to multiply m by v along the columns to get this result:
, , 1
     [,1] [,2]
[1,]    2   60
[2,]    4   70
[3,]    6   80
, , 2
     [,1] [,2]
[1,]   42   260
[2,]   44   270
[3,]   46   280
, , 3
     [,1] [,2]
[1,]   82   460
[2,]   84   470
[3,]   86   480
So, I figured I could do this by populating a new matrix the same 
dimensions as m with the values from v repeated in the right order and 
multiplying m by the new matrix.  It feels like there should be a 
one-step way to do this, though, especially since my real data is a 
very large data set and it would be memory-inefficient to create a new 
giant temporary matrix.

Thanks.
---
Gene
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