Move the selectednode in asp:treeview into middle of div

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Javascript

Asp.net web application
I have one div (div is scrollable), inside this div there is a treeview.
I want to scroll selected treeview node into middle of div.

By using selectednode.scrollintoview(true), I am able to scroll selected node on top of div.
but my requirement is to scroll/show that node in middle of div.

Solutions tried :

1) div.scrolltop = (div.scrollheight - div.clientheight) * 0.5
this line of code, scrolls the div's scrollbar into middle, but i want to scroll selected node into middle.

2) I am doing this jQuery(myDiv).scrollTo(selectednode); this is also not working.


Kindly help me out ASAP.
I am struggling with this since 3-4 days.