A previous theme I used for this site incorporated the collapsible sidebar lists I described in this post.
I’ve finally completed a plugin which provides the same functionality, but in a far more efficient and convenient way.
Looking to overhaul my photo gallery I thought I’d give Adobe’s Spry Sliding Panels widget a try.
Adobe’s examples have panels sliding vertically, horizontally and in any direction. The direction is controlled by CSS.
After experimenting with vertical and horizontal sliding I couldn’t figure out from the examples how to slide the panels in any direction until I realised how the panels are laid out and the importance of one particular CSS declaration.