Forcing a user to relog after x number of minutes
If you wish for a user to be redirected to the login page after they have been inactive for x number of minutes instead of waiting for them to jump to another page, add the following line inside the <head></head> block of your html:
<META HTTP-EQUIV="refresh" CONTENT="901;URL='login.cfm'">
This assumes that your session timeout is set for 15 minutes (900 seconds).