z-indexing problems

liunx

Guest
I have a navigation system that I'm implimenting similar to outlooks outlook bar

I'm having trouble with my z-indexes for when I scroll my groups, when I say scoll I sctually slide the contents rather than scroll them

I'll try demonstrate in the diagram below its a side view to show the layering

____ = a group

this is the normal start of view

____
____
____

afer scrolling the top group

____
____
____


the problem I'm having is I have buttons at the top of each group to select them and when I scroll the top group the items go below the top button but go over the top of the lower buttons

the structure I'm using for groups is

group
|
|--Button
|--Scrollable items
|
|--Items

can any one help?I'm trying to use clip to cut the top off the group when its scrolled, this seems to have the right effect but, I now have a javascript problem with my maths
 
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