Brian
Another way to do this is have links to last 3 months in datahtm2
Then I created another page called archived data.htm
I have links to all my month.htm files on this archived data.htm page.
Goes back to when I started in August 2000
I change the html code each month in datahtm2 to keep things current.
See my web page to see what I mean.
Obviously I have ticked let me manage the datahtm2 file.