Flying tree meniu

[Norkis]

Hello,

I have dynamic tree menu, which scrolls when page is scrolling.

Problem is, that when I used asp and html frames I got menu (links with java) in left side of page, which do not scroll, when page content scrolls (because it was in another frame).

Now I use ASP .NET, and my tree menu is user control.
There are no frames. If content consist large amount of data, and user scroll to the end of the page, tree menu becomes invisible (it stays in top-left). When I used frames, it does not change its top position, when scrolling.

I quest you understood my problem.

What solution could be?
Please help.