while offset < node_count
Node.find(:all, :limit => limit, :offset => offset).each do |node|
seq_id = 1
node.tags.split(';').each do |tag|
nt = NodeTag.new
nt.id = node.id
while offset < node_count
Node.find(:all, :limit => limit, :offset => offset).each do |node|
seq_id = 1
node.tags.split(';').each do |tag|
nt = NodeTag.new
nt.id = node.id