Are there any (premade) ajax tools I can use to make a panel slide in from off screen?

I've seen a couple of tools based on animated panels, mainly acordian and other "folding" type effects.

But what I'm after is to have pannels appear from off the side of the screen.

Is there anything outhere that fits the bill or do i need to code my own?

Cheers. :)

Try the Animation extender: http://ajax.asp.net/ajaxtoolkit/Animation/Animation.aspx