This is a wonderful plugin. I've spent all afternoon looking fruitlessly for something like this and eventually came across it after installing and removing countless attempts at what I want. Installed and configured it in a few minutes and bingo - just what I wanted. Thank you.
A definite 5-star job.
To the developer - I see it hasn't been updated for a few months and replies on the support thread seem to have dried up a little, but please please please don't let this slide into obsolescence. I'm developing a new site to be active for the next few years (hopefully) and do not want it falling over due to some unforeseen incompatibility next time WordPress gets updated.