[jQuery] slide effects not working.

[jQuery] slide effects not working.


Hello Guys,
I've got a couple of div's one of which I'm trying to set a slide
effect on when the other is toggled, both contain a single image. The
code example can be found here http://pastebin.com/m6c3f43a8
Now, the 'expandable' div is hidden when the page loads as I would
expect however clicking on the 'expander' div doesnt appear to trigger
any change in the 'expandable' div, also no JS error is thrown.
Any ideas on this? I'd appreciate it.
Rob