find_node = function(node, id)
	if node.type == 'text' and not node.button then
		if node.id == id then
			return node
		else
			return nil
		end
	end
	if node.type == 'rows' or node.type == 'cols' then
		for _,child in ipairs(node.data) do
			local t = find_node(child, id)
			if t then return t end
		end
	end
end