Thanks, that one works as I want :)
With a minor change, though...
I couldn't understand why the ".new" at the end of the
.RadTreeView_Sunset div.newClass .rtMinus .new
line does. So, I removed it and it's working like a charm now. Is that "new" class is a typo, or it has a special meaning in there?
Thanks again for pointing me to the right direction!