>>Thanks for ignoring but I think it I got it. It should be a problem of the mouse driver.
That's right - I suppose Judith wouldn't want to get 10-20 replies which all say "Personally, I don't know".
I have some unanswered questions too - I suspect nobody knows a solution.
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)