[R] Log-likelihood function

[Doxastic]

I've computed a loglinear model on a categorical dataset.  I would like to
test whether an interaction can be dropped by comparing the log-likelihoods
from two models(the model with the interaction vs. the model without). 
Since R does not immediately print the log-likelihood when I use the "glm"
function, I used SAS initially.  After searching for an extracting function,
I found one in R.  But, the log-likelihood given by SAS is different from
the one given by R.  I'm not sure if the "logLik" function in R is giving me
something I don't want.  Or if I'm misinterpreting the SAS output.  Can
anyone help?
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