Im currently working on an asp.net application, and the customer
expressed a prefference for a sliding left hand menu, similar to the
one in outlook

( The menus work like a stack, with the active menu at full height,
preceeding menus collapsed and above the active one, and later menus
collapsed at the foot of the active menu )

I had a first stab at this , but I cant change the height of a panel
dynamically.

Can anyone point me in the direction of sites that explain how this is
achieved with ASP.net's tools ?

Thanks,Simon

you will need to learn javascript to do this correctly (though you may
be able to buy a turn key solution. The ajax toolkit has a control that
could be used for this.

-- bruce (sqlwork.com)