Sergey,

because you were at the bottom of this list. And I sent off the mail happy that I had helped people solve a problem that had taken a little while to find the answer for. And then I saw that you had already replied correctly to the original post. I'm trained to scan and analyse the whole story before I open my mouth, but sometime "nature springs forth again", as they say in France.

Just for that, I'm going to CC everyone in again - you can never get too much of a good thing.
Neil