the binge drinking e.g. heavy weekends etc are much worse for the liver than a daily intake of alcohol - even if at the end of the week the units add up to the same amount or even if the binge session was actually a bit less... this is because of the high stress you are putting on the liver in a short space of time, it is for this reason that no one will be able to tell you how much damage you have done without going to see your doc and having it investigated - though i would suggest that more than a week off the juice will be required, but as Goods said the liver goes recover amazingly well if given sufficient time
if you start turning yellow go to the docs asap
though liver damage doesn't necessarily come with many symptoms - until its too late obviously
http://www.netdoctor.co.uk/diseases/facts/alcl iver.htm
have a read of this for some more info.