dynatree - How to scroll to active node?

Question

I have dynatree with fixed height and vertical scrollbar.

node.activate(); selects the node i'm searching for, but doesnt move the vertical scrollbar, so i have to scroll manualy to see active node.

How do i scroll it programmaticlly?

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Thanks to mar10, I solved this problem:

var activeLi = node.li;
$('#tree').animate({
    scrollTop: $(activeLi).offset().top - $('#tree').offset().top + $('#tree').scrollTop()
}, 'slow');