techmodek:
yes robin2. your code has a few faults and you mustve read my mind.
Well I had to leave something to keep the cobwebs out of your brain 
I'm interested to hear what the shortcomings are.
I don't think it has any "faults" as compared to my specification for it, but I am well aware that my specification is much more limited than yours.
I believe it should be easy to extend its capabilities - I wrote it with that in mind.
...R