Chemar,
I am so sorry, I just noticed the citation was missing while I was cutting and pasting. I am deleting it and will post it as per copy right rules
I should have checked it before posting

Girija

we are going to need the post above edited to comply with copyright please

a shortened snip in quotes and most importantly the link to the article with author citation

if you are past edit time could you please PM the link to me so I can edit it for you

sorry to be on about this all the time, but we cant risk the legal letters from authors and publications when copyright is violated

thanks[/QUOTE]