cool macro and nicely done with the info.
i don't want to be a mood breaker or anything but, for the people that really don't want to do anything that sounds like ..well .. basically .. having to do something  (or that for some reason cant create a macro) - and we all know they exist - but also refuse to use a addon (for some strange reason), there is a alternative

although not really accurate, and it has one or two broken maps

www.wowlocator.com