BLOCKSIZE = 2000;
MAXATTEMPTS = 10;

var query = function (n) {
  return 'SELECT owner, aid FROM album WHERE owner IN (SELECT uid1 FROM friend WHERE uid2 = me()) OR owner = me() ORDER BY aid LIMIT 2000 OFFSET ' +  (BLOCKSIZE * n);
}

var resultSize = BLOCKSIZE;
var i = 0;

while (resultSize == BLOCKSIZE && i < MAXATTEMPTS) {
  FB.api({
    method: 'fql.query'
  , query: query(i)
  , function (response) {
    resultSize = response.numberOfRecordsOrWhatever;
    [ .... ]
  });
  i++;
}